Summary of Contents for Elementar Analysensysteme GmbH vario EL cube
- Page 1 Variants Operating Instructions vario EL cube Analyzer Version 17.02.2017 Elementar Analysensysteme GmbH Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 2 Due to continued product development this information may change without notice. The information and intellectual property contained herein is confidential between Elementar Analysensysteme GmbH and the client and remains the exclusive property of Elementar Analysensysteme GmbH. If you find any problems in the documentation, please report them to us. Elementar Analysensysteme GmbH does not warrant that this document is error-free.
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Page 3: Table Of Contents
Notes on performing calibration ........................49 Oxygen analyses in routine operation ......................50 Application notes for oxygen determination ....................52 Pyrolysis temperature ........................53 Difficult matrices ..........................53 Lifetime of the pyrolysis tube ......................54 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 4 Notes on performing calibration ........................74 Oxygen analyses in routine operation ......................74 Application notes for oxygen determination ....................76 Pyrolysis temperature ........................77 Difficult matrices ..........................77 Lifetime of the pyrolysis tube ......................78 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 5 Modification into CHNS liquid mode ......................143 Calibration ..............................145 View of the analytical results ........................147 Check list, prior to the analysis run ......................147 Shut-down for measuring breaks....................... 148 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 6 Emptying special reaction tubes, CHN / CN / N mode ..............194 Filling the special reduction tube, CHN/ CN/ N mode..............194 Filling the special combustion tube, CHN/ CN/ N mode ..............196 Index Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 7: Chapter 1 General
Revision history ..........................8 About this document ........................9 Display conventions ........................10 Working with the operating instructions ..................10 General information on the operating instructions .................10 Notes regarding modification ......................11 Warning notes during operation ....................11 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 8: Revision History
Reduction tube filling in CHNS mode with VLS changed 23.08.2016 Combustion tube and reduction tube filling in the CHNS mode with VLS changed and made further small edits. 15.09.2016 Change of address Langenselbold 17.02.2017 Contents checked Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 9: About This Document
The status of the operating instructions is: 17.02.2017. Identification number The operating instructions identification number is: 19.00-5006. Validity The operating instructions are valid for all instruments as from serial number: 19105046. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 10: Display Conventions
They do not reflect the proper, recommended set values. Reading aids Subheadings are displayed in the left margin as reading aids. They sum up the content of the particular section and are useful for quick navigation. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 11: Notes Regarding Modification
When working inside the instrument there is a risk of burning as many parts of the instrument are hot. When working inside the instrument always wear protective glasses and the enclosed heat protection gloves. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 12 Overheating if tube fillings are not appropriate for the operating mode! Overheated tube fillings melt, run into the furnace area and destroy the furnace. Make sure that the tube fillings correspond to the selected operating mode. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 13: Chapter 2 Oxygen Determination With Tcd
Changing of the pyrolysis crucible ....................24 Establishing of the analysis readiness ...................25 Notes on performing calibration .....................26 Oxygen analyses in routine operation ...................27 Application notes for oxygen determination ...................29 Additional error messages in O mode ...................32 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 14: Analytical Characteristics And Technical Specifications
Substance digestion and preparation of the reaction gas mixture is divided into the following phases: Phase Process The substance to be analyzed is digested in reductive atmosphere at a temperature of approx. 1,170 °C by means of pyrolysis (cracking). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 15 NaOH layer. Other pyrolysis products like e.g. N and CH are led to a separation and measuring system together with the carbon monoxide to be detected. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 16 2 - Oxygen determination with TCD Notes For a better understanding see also the following illustration (tubing diagram, oxygen determination). Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 17: Separation Of The Reaction Gases
Detection Introduction The method of detection is described under Detection of measuring components and evaluation of the measuring signal in the vario EL cube operating instructions. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 18: Tube Fillings
1 Ash finger (used as protection tube) 2 Ash crucible 3 Graphite felt (10 mm) 4 Carbon black (55 mm) 5 Support rod (110 mm) 6 Quartz chips, coarse (2-4 mm) 7 Quartz wool (2 mm) Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 19: Modification To O Mode
Scope of the modification kit for oxygen determination All parts necessary for the tube modification are included in the O upgrade kit for detecting oxygen with TCD and are labeled with numbers. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 20 Strictly observe the safety instruction "Gas pressure" under Warning notes during operation (on page 11). Note To remove/install the tubes proceed as described in chapter Removing standard reaction tubes of the vario EL cube main operating instructions. Process The modification is divided into the following phases: ...
- Page 21 Note: For a modification to a mode with quartz glass bridge, the plug of the heating cartridge holder has to be plugged back into socket X47! Open the front door. Remove the heat protection below the furnace. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 22 CO adsorption column (10). Proceed as described under Removing/installing and conditioning the adsorption column of the vario EL cube main operating instructions. Connect tube no. 10 (42) with the CO column (10) by means of the ground-in clamp.
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Page 23: Conditioning The Pyrolysis Tube
Connect tube no. 48 with the outlet of the pyrolysis tube. Lead the end of the hose line through the crack in the door into the open. The front door has to be closed. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 24: Changing Of The Pyrolysis Crucible
After completion of the pressure drop procedure detach the ground-in clamp at the NaOH tube outlet. Open the bayonet catch at the ball valve. Pull the furnace out of the instrument. Pull the combustion tube flange out of the pyrolysis tube. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 25: Establishing Of The Analysis Readiness
A description how to define a new and/or modify an existing standard is given under Edit standard samples in the vario EL cube operating instructions. If no modifications have been carried out in the standard samples dialog, leave it by clicking Close, otherwise by clicking Save followed by Close. -
Page 26: Notes On Performing Calibration
If the measuring range is to be extended, the following sample weights can be added: Benzoic acid 9 - 10 - 12 - 14 - 16 - 18- 19 mg. Thus, a measuring range up to 5 mg absolute oxygen will be covered. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 27: Oxygen Analyses In Routine Operation
The instrument has factory set analysis parameters for test substances defined in the standards menu (e.g. acetanilide, benzoic acid). Note: The modification of the instrument parameters is only possible with the appropriate access rights. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 28 Peak anticipation O See above. 150 s Desorpt. O Corresponds to the desorption temperature of 260 °C the column in O/TCD mode. Desorpt. midtemp. 40 °C Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 29: Application Notes For Oxygen Determination
Personnel with basic knowledge of chemistry and experience with laboratory work, e. g. chemistry laboratory workers. Purpose This section gives additional notes about the application for oxygen determination. In this section Pyrolysis temperature ........................30 Difficult matrices ..........................30 Lifetime of the pyrolysis tube ......................31 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 30: Pyrolysis Temperature
To guarantee the absolute accuracy of the measuring results, it is recommended to use standard substances for calibration and daily factor determination which have the same bond type like oxygen. For general measurements of unknown substances use the average daily factor of 2 measured standards. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 31: Lifetime Of The Pyrolysis Tube
Measurement of 5 samples polyethylene and 10 samples benzoic acid each approx. 2 mg. Only if the carbon black filling in the pyrolysis tube has decreased significantly, the installation of a newly filled pyrolysis tube with subsequent flushing and conditioning is recommended. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 32: Additional Error Messages In O Mode
Run at least 20 blank samples with empty silver boats. Sample weight too high. Peak end error Reduce sample weight. Element content of sample Increase peak end threshold of dummy too high. peak. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 33: Chapter 3 Oxygen Determination With Ndir
Changing of the pyrolysis crucible ....................47 Establishing of the analysis readiness ...................48 Notes on performing calibration .....................49 Oxygen analyses in routine operation ...................50 Application notes for oxygen determination ...................52 Additional error messages in O mode ...................55 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 34: Analytical Characteristics And Technical Specifications
The folded boat is thrown into the quartz glass pyrolysis tube by means of an autosampler. The oxygen containing radicals formed in the pyrolysis tube are converted quantitatively at a carbon contact (special carbon black) into carbon monoxide (Boudouard equilibrium). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 35 Since the NDIR detector does only respond to CO, foreign gases, like e.g. N and CH does not have to be separated. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 36 3 - Oxygen determination with NDIR Oxygen determination with single NDIR detector CO For a better understanding see also the following illustration (tubing diagram, oxygen determination). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 37 Oxygen determination with dual NDIR detector CO/SO For a better understanding see also the following illustration (tubing diagram, oxygen determination). Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 38: Detection
Use chemicals necessary for the tube fillings only in the appropriate quality. Delivery directly from the instrument manufacturer. Safety instruction Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation (on page 11). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 39 Fill the tube with NaOH (on carrier) and with Sicapent® (identical fill heights). Close the tube ends with cotton. Insert the NaOH tube into the already mounted clamps at the left side of the combustion furnace. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 40: Modification To O Mode
Strictly observe the safety instruction "Gas pressure" under Warning notes during operation (on page 11). Note To remove/install the tubes proceed as described in chapter Removing standard reaction tubes of the vario EL cube main operating instructions. Process The modification is divided into the following phases: ... - Page 41 Note: For a modification to a mode with quartz glass bridge, the plug of the heating cartridge holder has to be plugged back into socket X47! Open the front door. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 42 Make sure the upper lug of the NDIR photometer will snap into the guidance angle. Now fasten the photometer by fixing both screws. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 43 Attach the RS232 module (17) on the BCB board (JP5) by means of the four screws M3x6 and connect it (COM2). Connect the pre-installed data cable no. 50 to the RS232 module just installed. Remove the plugs from the rear wall. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 44 The double nipple connector at the end of the hose line no. 29 (20) is used to connect the on-site waste gas line. CAUTION: Follow the notes about discharging the waste gases into the open or into a vent in the vario EL cube main operating instructions! Close the left and right side door.
- Page 45 Loosen tube no. 60 from the angled screw coupling at valve MV 2. Now connect tube no. 60 and hose line no. 10 (42) by means of a ground-in clamp. Remount the valve cover. Close the left side door. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 46: Conditioning The Pyrolysis Tube
The instrument performs now a reference run of the ball valve and autosampler. Switch on the operating gas. Set the intake pressure at the delivery point to 0.5 bar. Open the gas connection to the NaOH tube. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 47: Changing Of The Pyrolysis Crucible
In addition to the common maintanance work, the replacement of the pyrolysis crucible for oxygen determination will be described here. The crucbile has to be emptied after approx. 80 samples, if you work with the polyethylene additive. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 48: Establishing Of The Analysis Readiness
Switch on the operating gases. Launch the operating software. Open the "Analysis mode" dialog in the operating software by selecting System > Mode. Select the desired operation mode ("O" for oxygen). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 49: Notes On Performing Calibration
A description how to define a new and/or modify an existing standard is given under Edit standard samples in the vario EL cube operating instructions. If no modifications have been carried out in the standard samples dialog, leave it by clicking Close, otherwise by clicking Save followed by Close. -
Page 50: Oxygen Analyses In Routine Operation
The following table shows the pre-set times and explains the meaning of the parameters: Parameter Meaning Factory setting Flushing time Time in which the blind hole of the ball valve 10 s is flushed, so the atmospheric oxygen will be removed. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 51 During this time the integrator waits for a measuring peak. If the measuring peak does not appear within this time, the integration is concluded and the next analysis is started. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 52: Application Notes For Oxygen Determination
Personnel with basic knowledge of chemistry and experience with laboratory work, e. g. chemistry laboratory workers. Purpose This section gives additional notes about the application for oxygen determination. In this section Pyrolysis temperature ........................53 Difficult matrices ..........................53 Lifetime of the pyrolysis tube ......................54 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 53: Pyrolysis Temperature
To guarantee the absolute accuracy of the measuring results, it is recommended to use standard substances for calibration and daily factor determination which have the same bond type like oxygen. For general measurements of unknown substances use the average daily factor of 2 measured standards. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 54: Lifetime Of The Pyrolysis Tube
Measurement of 5 samples polyethylene and 10 samples benzoic acid each approx. 2 mg. Only if the carbon black filling in the pyrolysis tube has decreased significantly, the installation of a newly filled pyrolysis tube with subsequent flushing and conditioning is recommended. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 55: Additional Error Messages In O Mode
Varying boat blank values. Run at least 20 blank samples with empty silver boats. Sample weight too high. Peak end error Reduce sample weight. Oxygen content of sample too high. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 57: Chapter 4 Oxygen Determination With Combined Ndir For Measuring Co And So2
Changing of the pyrolysis crucible ....................72 Establishing of the analysis readiness ...................73 Notes on performing calibration .....................74 Oxygen analyses in routine operation ...................74 Application notes for oxygen determination ...................76 Additional error messages in O mode ...................79 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 58: Analytical Characteristics And Technical Specifications
The folded boat is thrown into the quartz glass pyrolysis tube by means of an autosampler. The oxygen containing radicals formed in the pyrolysis tube are converted quantitatively at a carbon contact (special carbon black) into carbon monoxide (Boudouard equilibrium). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 59 Since the NDIR detector does only respond to CO, foreign gases, like e.g. N and CH does not have to be separated. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 60 4 - Oxygen determination with combined NDIR for measuring CO and SO2 Oxygen determination with single NDIR detector CO For a better understanding see also the following illustration (tubing diagram, oxygen determination). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 61 Oxygen determination with dual NDIR detector CO/SO For a better understanding see also the following illustration (tubing diagram, oxygen determination). Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 62: Detection
Use chemicals necessary for the tube fillings only in the appropriate quality. Delivery directly from the instrument manufacturer. Safety instruction Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation (on page 11). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 63 Fill the tube with NaOH (on carrier) and with Sicapent® (identical fill heights). Close the tube ends with cotton. Insert the NaOH tube into the already mounted clamps at the left side of the combustion furnace. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 64: Modification To O Mode
Strictly observe the safety instruction "Gas pressure" under Warning notes during operation (on page 11). Note To remove/install the tubes proceed as described in chapter Removing standard reaction tubes of the vario EL cube main operating instructions. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 65 Note: For a modification to a mode with quartz glass bridge, the plug of the heating cartridge holder has to be plugged back into socket X47! Open the front door. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 66 2 mm. Attach the clamp (30) in the gas insert by means of the screw (31). Fasten the filled U-tube (29) with the clamp (30). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 67 Attach the RS232 module (17) on the BCB board (JP5) by means of the four screws M3x6 and connect it (COM2). Connect the pre-installed data cable no. 50 to the RS232 module just installed. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 68 Connect the opposite end of tube no. 25 (28) (red cap) as well as the inlet hose line no. 28 (19) of the NDIR photometer to the U tube (29). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 69 Unscrew the retaining screws (1) above the valve rack cover and remove the valve rack cover. Pull the plug of the valve rack cover. The valve rack is now visible. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 70 The modification has now been completed and the instrument is ready for the O determination in routine operation. View after the modification has been completed The following picture shows the oxygen mode after the modification has been completed. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 71: Conditioning The Pyrolysis Tube
Connect the 25 m long exhaust hose (art. no. 03 651 010) with the outlet of the IR at the instrument rear. Close the gas connection at the NaOH tube and adjust the intake pressure at the delivery point until the PC displays a pressure of approx. 1.2 bar. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 72: Changing Of The Pyrolysis Crucible
Flush the apparatus for approx. 1 hour and set the furnace temperature back to 1,170 °C. Wait until the PC display of the baseline of the detector is stable. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 73: Establishing Of The Analysis Readiness
A description how to define a new and/or modify an existing standard is given under Edit standard samples in the vario EL cube operating instructions. If no modifications have been carried out in the standard samples dialog, leave it by clicking Close, otherwise by clicking Save followed by Close. -
Page 74: Notes On Performing Calibration
20 real samples 3 x benzoic acid (approx. 2.0 mg) etc. The sample weight values can be entered either directly from a connected balance or manually via the keyboard. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 75 During this time the integrator waits for a measuring peak. If the measuring peak does not appear within this time, the integration is concluded and the next analysis is started. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 76: Application Notes For Oxygen Determination
Personnel with basic knowledge of chemistry and experience with laboratory work, e. g. chemistry laboratory workers. Purpose This section gives additional notes about the application for oxygen determination. In this section Pyrolysis temperature ........................77 Difficult matrices ..........................77 Lifetime of the pyrolysis tube ......................78 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 77: Pyrolysis Temperature
To guarantee the absolute accuracy of the measuring results, it is recommended to use standard substances for calibration and daily factor determination which have the same bond type like oxygen. For general measurements of unknown substances use the average daily factor of 2 measured standards. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 78: Lifetime Of The Pyrolysis Tube
Measurement of 5 samples polyethylene and 10 samples benzoic acid each approx. 2 mg. Only if the carbon black filling in the pyrolysis tube has decreased significantly, the installation of a newly filled pyrolysis tube with subsequent flushing and conditioning is recommended. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 79: Additional Error Messages In O Mode
Varying boat blank values. Run at least 20 blank samples with empty silver boats. Sample weight too high. Peak end error Reduce sample weight. Oxygen content of sample too high. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 81: Chapter 5 Sulfur Determination With Ndir
Personnel involved with the instrument. Purpose This section describes the special features of the sulfur determination with NDIR. In this chapter Special features ..........................82 Functional diagram ........................83 Modification to S operation ......................84 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 82: Special Features
NDIR photometer by means of a drying tube (small U tube, filled with Sicapent®, behind the left side door, below). Drying tube filling The following picture shows the fillings of the drying tube: Legend: 1 Filter wool (approx. 10 mm) 2 Sicapent® Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 83: Functional Diagram
Functional diagram The following picture shows the functional diagram of the CHNS, CNS and S/NDIR modes: Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 84: Modification To S Operation
The following parts are also part of the kit but are not pictured. D-sub-adapter Software update CD. Modification Proceed as follows: Turn off the instrument and pull the power supply plug. Open the left side wall. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 85 (A) Cable #50 to RS232 module (B) Cable #53 (internal IR) (C) Cable #51 (power supply) Connect the pre-installed cable no. 51 (C) with the double-pole plug on the IR board. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 86 Attach the RS232 module (17) on the BCB board (JP5) by means of the four screws M3x6 and connect it (COM2). Connect the pre-installed data cable no. 50 to the RS232 module just installed. Remove the plugs from the rear wall. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 87 CAUTION: Follow the notes about discharging the waste gases into the open or into a vent in the vario EL cube main operating instructions! Connect the opposite end of tube no. 25 (28) (red cap) as well as the inlet hose line no. 28 (19) of the NDIR photometer to the U tube (29).
- Page 88 Enter e.g. under "Event" the name absorption tube and under "Interval" the value 120 samples. Note: depending on the sample matrix and sample size the interval may fluctuate. Press Save and close the menu. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 89: Chapter 6 Sulfur Determination With Combined Ndir For Measuring Co And So2
NDIR for measuring CO (oxygen determination) and SO (sulfur determination, e.g. in NCHS or NCS operation). In this chapter Special features ..........................90 Functional diagram ........................91 Modification to S operation ......................92 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 90: Special Features
NDIR photometer by means of a drying tube (small U tube, filled with Sicapent®, behind the left side door, below). Drying tube filling The following picture shows the fillings of the drying tube: Legend: 1 Filter wool (approx. 10 mm) 2 Sicapent® Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 91: Functional Diagram
Functional diagram The following picture shows the functional diagram of the CHNS, CNS and S/NDIR modes: Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 92: Modification To S Operation
The following parts are also part of the kit but are not pictured. D-sub-adapter Software update CD. Modification Proceed as follows: Turn off the instrument and pull the power supply plug. Open the left side wall. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 93 (A) Cable #50 to RS232 module (B) Cable #53 (internal IR) (C) Cable #51 (power supply) Connect the pre-installed cable no. 51 (C) with the double-pole plug on the IR board. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 94 Attach the RS232 module (17) on the BCB board (JP5) by means of the four screws M3x6 and connect it (COM2). Connect the pre-installed data cable no. 50 to the RS232 module just installed. Remove the plugs from the rear wall. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 95 CAUTION: Follow the notes about discharging the waste gases into the open or into a vent in the vario EL cube main operating instructions! Connect the opposite end of tube no. 25 (28) (red cap) as well as the inlet hose line no. 28 (19) of the NDIR photometer to the U tube (29).
- Page 96 6 - Sulfur determination with combined NDIR for measuring CO and SO2 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 97: Chapter 7 Chlorine Determination With Ec Cell
Notes on sensitivity and measuring range ...................104 Cross-sensitivity of the EC cells ....................105 Quantitative conversion from Cl to HCl ..................106 Maintenance of the HCl EC cells ....................106 Leak test ............................107 Modification to Cl operation ......................108 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 98: Analytical Characteristics And Technical Specifications
For the digestion weigh in the sample into tin boats (for liquid samples tin capsules are available). The folded boat is thrown into the vertical quartz glass combustion tube by means of an autosampler. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 99 , etc.) are subsequently transported to the EC cell. The EC cell specifically reacts to HCl, thus, a gas separation is not necessary. Notes For a better understanding see also the following illustration (tubing diagram, chlorine determination). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 100: Detection
Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation (on page 11). Filling of the quartz combustion tube for Cl determination The arrangement of the filling must be carried out as shown in the following illustration. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 101 Close the other end of the tube (thread side) with quartz wool. Insert the o-ring in the pan of the drying tube. Make sure the sealing surface is not soiled by quartz wool fibers. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 102: Notes On Performing Calibration
Due to the high Cl content we recommend the insertion of an aqueous solution. We recommend the following stock solution for the different EC cell types: EC cell type Calibration range [µg Cl] [mg/l] [mg/l] 20 ppm 0.05-0.5 3.79 0.5-2 15.2 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 103: Chlorine Analyses In Routine Operation
Integrator reset delay peak Cl This time comes into effect after the sample is fed and prevents the ensuing detector instabilities from being jointly integrated. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 104: Notes On Sensitivity And Measuring Range
If the peak signal exceeds this threshold the upper parts of the peaks are cut off. Example for unused components: Legend: 1 Measure range exceeded 2 Measure range OK Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 105: Cross-Sensitivity Of The Ec Cells
(e.g. CO, CH etc.). These gases will superimpose the HCl peak. Empirically, incomplete combustion occurs with organic substances with high sample weights. For samples up to 50 mg this should not occur. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 106: Quantitative Conversion From Cl To Hcl
Therefore, by turns one cell can be used for the measurement, the other one can be used for regeration. The following sequence has been well-proven: 1 - 2 days measurement 2 - 3 days regeneration Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 107: Leak Test
If the flow display shows a value above 3 ml/min within this time, check all connections. Proceed according the principle of the steps previously described. After completed leak test, get the instrument back into the original condition of the chlorine mode. Use the flow diagram. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 108: Modification To Cl Operation
The modification is divided into the following phases: Switching off the instrument Removal of components not needed Modifications at the furnace section Installing the EC cell and final work Gas connection Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 109 Note To remove/install the tubes proceed as described in chapter Removing standard reaction tubes of the vario EL cube main operating instructions. Phase 2: Removal of components not needed Before starting the installation of the new components, certain components have to be removed. The removal is described in the following.
- Page 110 Lay the hose line no. 300 as displayed in the pictures below (arrows): The free end of hose line no. 300 should be now located in the left area of the instrument. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 111 Close the left heater of the furnace by means of the blind plug (170). Insert the quad ring (190) into the blind pan (180) and close the O inlet with the blind pan. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 112 Put the HCl sensor (10) in front of the gas insert and conenct cable no. 49 to plug X 70 (1) and cable no. 114 to plug X 71 (2) of the HCl sensor. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 113 Connect the free end of tube no. 310 (110) outside the instrument back wall to the delivered waste gas tube (A, hose 5 x 1) and lead it into an exhaust hood. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 114 Adjust the gas flow for chlorine determination with the needle valve accessible from the left: Setpoint 250-300 ml/min (PC display "Flow Air"). Perform a leak test. The instrument is only ready to measure if the leak test was successful. The modification is now completed. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 115: Chapter 8 Tic Solids Module
Installation and initial start up of the TIC module .................123 Selecting the operating mode ......................126 General measuring principle TIC ....................127 Analysis run ..........................128 Defining custom standard substances ..................130 Maintenance work ........................130 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 116: General Information
General information The TIC solids module The TIC solids module is an auxiliary unit to the vario EL cube. The knowledge of the vario EL cube operating instructions is also prerequisite for the proper operation of the TIC solids module. -
Page 117: Technical Specifications
The operational reliability of the SoliTIC module can only be guaranteed if original consumables and original spare parts from ELEMENTAR Analysensysteme GmbH will be used. When using other consumables or chemicals of unsufficient quality injuries of the operating personnel or damages at the instrument may occur. -
Page 118: Analytical Characteristics
Sample digestion Acid at 50 °C Data storage and data output Storage on hard disk or external storage media. LIMS transfer possible. Data output to screen and printer. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 119: Functional Diagram Tic Module
8 - TIC solids module Functional diagram TIC module Functional diagram TIC module soliTIC The following picture shows the functional diagram of the TIC module soliTIC. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 120 8 - TIC solids module Funktional diagram coupling TIC module with vario EL cube basic instrument The following picture shows the coupling of the TIC module (soliTIC) with the vario EL cube basic instrument. Symbols The following list names the functional and basic symbols:...
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Page 121: The Components
Use chemicals necessary for the tube fillings only in the appropriate quality. Delivery directly from the instrument manufacturer. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 122 The following picture shows the fillings of the drying tube: Legend: 1 Filter, 03 002 399 (20 mm) 2 Sicapent® Proceed as follows: Insert the filter material (1) at one end of the tube. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 123: Installation And Initial Start Up Of The Tic Module
TIC operation. Thus, they also can be set to 0 °C when working with TIC mode for a longer period. Shut off the gas supply into the vario EL cube instrument (carrier gas and O Wait until the system pressure has dropped down to 0 bar. - Page 124 (2) into the hole. Lead hose line no. 127 (1) through the instrument (area with adsorption columns, gas insert, rear wall) and fasten the screw connection and sealings again. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 125 Hose line no. 127 to measure gas outlet TIC module (1). Hose line no. 128 to carrier gas inlet TIC module (2). Connect the communication cable No. 5 to the "TIC" plug (1) of the analyzer. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 126: Selecting The Operating Mode
Execute the command System > Mode in the instrument software. A message window appears which requests you to confirm the change of the operating mode once more. Click Yes if you want to continue. The "Analysis mode" dialog is displayed. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 127: General Measuring Principle Tic
After completion of the analysis the result can be saved. Analysis steps The following pictures show the analysis steps: Start of the single measurement Inserting the sample Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 128: Analysis Run
Proceed as follows: Enter sample name, sample weight and measuring method into the corresponding text field of the instrument software. Start the measuring process by clicking the Single start button, Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 129 After completion of the peak recording the user will be requested to empty the system. The following dialog appears: To empty the container turn the lever at the casing front to the vertical position. Wait an appropriate time until the container is competely empty. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 130: Defining Custom Standard Substances
Exchange of the peristaltic hose at the hose pump Proceed as follows: Remove the front plate (unscrew retaining bolt). Remove the cover of the hose pump. Remount the covers again after exchange of the pump hose. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 131 Filling the acid container Refill the acid container. Renewal of the drying tube filling in the vario EL cube instrument. The Sicapent® filling gets blue by consumption. Accordingly replace the drying tube filling in the vario EL cube instrument.
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Page 133: Chapter 9 Chns Determination With The Liquid Autosampler Vario Ls
Defining custom methods ......................142 Modification into CHNS liquid mode ....................143 Calibration ...........................145 View of the analytical results .......................147 Check list, prior to the analysis run ....................147 Shut-down for measuring breaks ....................148 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 134: Chns Determination With Vario Ls
Enter the data of the sample to be analyzed, like "Hole pos", "Name", "Density" and "Method". Equip the tray with the vials corresponding to the data input. Start the vario EL cube by clicking the "Single" or "Auto" symbol. ... - Page 135 The following picture shows the integration course: Legend: 1 Detector fluctuations during sample feeding, auto zero peak 3 CO peak peak 5 Foreign gases of the SO column 6 SO peak Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 136 Functional diagram The following picture shows the functional diagram of the CHNS mode with VLS. Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 137: Tube Fillings
Safety instruction Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation (on page 11). The following picture shows the fillings and filling heights of the combustion tube: Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 138 5 Support tube (65 mm) 6 Quartz wool (5 mm) Note All drying tubes will be filled according to the regular CHNS/CNS operation. Please refer to the vario EL cube main operating instructions. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 139: Selecting The Operating Mode
20 real samples, 3 fold determination 3 x Hexadecane+Pyridine+Di-Octylsulfide ..etc. Setting device parameters About instrument parameters You need to know the following about instrument parameters: The instrument parameters listed here are average values. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 140 Ejection speed for removal of bubbles. 120 (100 µl-syringe) 60 (10 µl-syringe) Dose intake (G5) Suction speed of the actual sample. Dose eject (G6) Injection speed into the furnace. 120 (100 µl-syringe) 60 (10 µl-syringe) Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 141 Factory setting Number of measuring values per mean value group Number of successful mean value groups Number of unsuccessful mean value groups Baseline constant Baseline factor in ‰ admissible baseline difference Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 142: Defining Custom Standard Substances
You have now defined the standard substance. Click Close to close the dialog. Defining custom methods View and define methods In the "Methods" dialog you can view existing methods or define new methods. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 143: Modification Into Chns Liquid Mode
The section is divided into the following phases: Switching off the instrument. Installing the vario LS autosampler. Modifying the furnace part. Conditioning new reaction tubes. Performing follow-up work. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 144 Phase 2: Installing the vario LS autosampler Proceed as follows: Mount the liquid sample onto the vario EL cube according to the operating instructions of the vario LS. Connect tube no. 5 and tube no. 26 with the furnished tube no. 71.
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Page 145: Calibration
Calibration General The vario EL cube has a calibrated set of coefficients which can be used. This is already calibrated in solids mode or may be generated here. If a different procedure is requested, Elementar suggests the following calibration for CHNS in liquid operation. - Page 146 66.056 g C · 100 = 83,098 % 79.492 g % H = 11.215 g H · 100 = 14,108 % 79.492 g % N = 1.385 g N · 100 = 1,742 % Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 147: View Of The Analytical Results
Check list, prior to the analysis run Prior to the analysis run Prior to starting an analysis run, the following points shall be completed: Maintenance intervals observed? Operation mode set? Gas on? Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 148: Shut-Down For Measuring Breaks
Exchange of the septum for injection. Exchange of the combustion tubes. In addition, the maintenance of the basic instrument remain. Please refer to the vario EL cube main operating instructions. Note We recommend to determine the maintenance intervals via Options > Maintenance > Intervals in... -
Page 149: Chapter 10 Chn Determination With The Liquid Autosampler Vario Ls
Defining custom standard substances ..................158 Defining custom methods ......................158 Modification into CHN liquid mode....................159 Calibration ...........................161 View of the analytical results .......................163 Check list, prior to the analysis run ....................163 Shut-down for measuring breaks ....................164 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 150: Chn Determination With Vario Ls
Enter the data of the sample to be analyzed, like "Hole pos", "Name", "Density" and "Method". Equip the tray with the vials corresponding to the data input. Start the vario EL cube by clicking the "Single" or "Auto" symbol. ... - Page 151 10 - CHN determination with the liquid autosampler vario LS Integration The following picture shows the integration course: Legend: 1 Detector fluctuations during sample feeding, auto zero peak 3 CO peak peak Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 152 Functional diagram The following picture shows the functional diagram of the CHN mode with VLS. Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 153: Tube Fillings
Use chemicals necessary for the tube fillings only in the appropriate quality. Delivery directly from the instrument manufacturer. Safety instruction Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation (on page 11). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 154 Reduction tube filling The following picture shows the fillings and filling heights of the reduction tube: Legend: Plug with o-ring 2 Silver wool (20 mm) 3 Copper 4 Quartz wool (25 mm) Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 155: Selecting The Operating Mode
3 x Run-in samples (Hexadecane+Pyridine) 3 x Factor samples (Hexadecane+Pyridine) 20 real samples, 3 fold determination 3 x Hexadecane+Pyridine 20 real samples, 3 fold determination 3 x Hexadecane+Pyridine..etc. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 156: Setting Device Parameters
Additional sample amount in [µl] which is not injected. Flush intake (G1) Suction speed during flushing. Flush eject (G2) Ejection speed during flushing. 120 (100 µl-syringe) 60 (10 µl-syringe) Prepare intake (G3) Suction speed during preparation for injection. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 157 The following table shows the pre-set values of the parameters: Parameter Factory setting Number of measuring values per mean value group Number of successful mean value groups Number of unsuccessful mean value groups Baseline constant Baseline factor in ‰ Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 158: Defining Custom Standard Substances
You have now defined the standard substance. Click Close to close the dialog. Defining custom methods View and define methods In the "Methods" dialog you can view existing methods or define new methods. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 159: Modification Into Chn Liquid Mode
The section is divided into the following phases: Switching off the instrument. Installing the vario LS autosampler. Modifying the furnace part. Conditioning new reaction tubes. Performing follow-up work. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 160 Phase 2: Installing the vario LS autosampler Proceed as follows: Mount the liquid sample onto the vario EL cube according to the operating instructions of the vario LS. Connect tube no. 5 and tube no. 26 with the furnished tube no. 71.
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Page 161: Calibration
Calibration General The vario EL cube has a calibrated set of coefficients which can be used. This is already calibrated in solids mode or may be generated here. If a different procedure is requested, Elementar suggests the following calibration for CHN in liquid operation. - Page 162 % N = 1.385 g N · 100 = 1,754 % 78.940 g = 100 % Calculating the density of the test substance: Density = 78.940 g = 0.7894 g/ml Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 163: View Of The Analytical Results
Operation mode set? Gas on? Pressure on? Lecktest passed? Absorption tube filled and installed? Detector signal stable? Sample name, method and standard samples edited and assigned? Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 164: Shut-Down For Measuring Breaks
Exchange of the septum for injection. Exchange of the combustion tubes. In addition, the maintenance of the basic instrument remain. Please refer to the vario EL cube main operating instructions. Note We recommend to determine the maintenance intervals via Options > Maintenance > Intervals in... -
Page 165: Chapter 11 Upgrade Kit For Manual Injection
Removal of components not needed ...................167 Installation of the required parts ....................168 Functional diagram varioELcube CHNS ..................170 Functional diagram varioMACROcube CHN ................172 Functional diagram varioMACROcube CHNS ................174 Functional diagram varioMICROcube ..................176 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 166: Scope Of The Upgrade Kit For Manual Injection
7 Tube no. 71 14 connection with pan 15 O-ring 4.5x1.5 green The following parts are also part of the kit but are not pictured. Hexagon socket screw key, size 1.5 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 167: Removal Of Components Not Needed
Pull the furnace out of the instrument. Now the combustion tube plug (14) can be removed. Loosen the 2 hexagonal bolts (15) and the ground-in clamps (16) to remove the ball valve (17). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 168: Installation Of The Required Parts
Connect the ground-in ball-and-socket joints (tube 108) with the open pans of the plugs of reduction tube. At the vario EL cube: Connect the ground-in ball-and-socket joints (tube 61) with the open pans of the plugs of reduction tube. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 169 11 - Upgrade kit for manual injection Close the front door. The modification is now completed and the instrument is ready for operation. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 170: Functional Diagram Varioelcube Chns
Functional diagram varioELcube CHNS The following picture shows the functional diagram for the CHNS mode: Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 171 11 - Upgrade kit for manual injection Three-way valve Loop Measuring cell Check valve Sensor Heated tube Throttle Drying Hose line Flow controller Combustion Copper tube Flow sensor Post combustion Reduction Pressure contoller Actuator Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 172: Functional Diagram Variomacrocube Chn
Functional diagram varioMACROcube CHN The following picture shows the functional diagram for the CHN mode: Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 173 11 - Upgrade kit for manual injection Three-way valve Loop Measuring cell Check valve Sensor Heated tube Throttle Drying Hose line Flow controller Combustion Copper tube Flow sensor Post combustion Reduction Pressure contoller Actuator Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 174: Functional Diagram Variomacrocube Chns
Functional diagram varioMACROcube CHNS The following picture shows the functional diagram for the CHNS mode: Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 175 11 - Upgrade kit for manual injection Three-way valve Loop Measuring cell Check valve Sensor Heated tube Throttle Drying Hose line Flow controller Combustion Copper tube Flow sensor Post combustion Reduction Pressure contoller Actuator Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 176: Functional Diagram Variomicrocube
11 - Upgrade kit for manual injection Functional diagram varioMICROcube The following picture shows the functional diagram: Symbols The following list names the functional and basic symbols: Two-way valve Pressure sensor Gas separation Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 177 11 - Upgrade kit for manual injection Three-way valve Loop Measuring cell Check valve Sensor Heated tube Throttle Drying Hose line Flow controller Combustion Copper tube Flow sensor Post combustion Reduction Pressure contoller Actuator Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 179: Chapter 12 Modification Kit For Special Applications
This chapter is meant to explain the installation of the modification kit for special applications. In this chapter Removing/installing and conditioning the special reaction tubes ..........180 Emptying and filling special reaction tubes ..................188 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 180: Removing/Installing And Conditioning The Special Reaction Tubes
12 - Modification kit for special applications Removing/installing and conditioning the special reaction tubes In this section Removing the special reaction tubes from the furnace ..............181 Installing special reaction tubes in the furnace and conditioning ..........183 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 181: Removing The Special Reaction Tubes From The Furnace
Phase 2: Removing reaction tubes Proceed as follows: Open the front door. Unscrew the combustion tube connector. To do so, turn the handle (1) of the bayonet catch (2) to the right. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 182 Place the combustion tube connection (3) on the tube rack. Pull the reduction tube plug (1) out of the reduction tube (2) and lay it on the tube rack. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 183: Installing Special Reaction Tubes In The Furnace And Conditioning
The front door must be open and the furnace must be moved out. Clean off all fingerprints on the tube before installing it. Use acetone, for example, for cleaning. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 184 Close the combustion tube (4) with the combustion tube connector (3). Pleace the heat shield (9) on the holder. This is necessary for the CHNS mode with 1,150 °C in the combustion tube. Dismount tube no. 27. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 185 Check whether the seal is in the pan of the plug. Furnace area The following picture shows the details of the furnace area: Legend: 1 Handle of the bayonet catch 2 Bayonet catch 3 Ground-in clamp on the reduction tube Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 186 "Pressure" display shows 1200 - 1250 mbar on screen. the measuring gas flow meter "MFC-TCD" displays 200 ml/min on screen. the carrier gas flow meter "Flow He" displays approx. 200 ml/min on screen. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 187 If you have performed maintenance work that has a defined maintenance interval, you must manually reset the "Status" field to zero on the "Maintenance intervals" dialog (accessible via Options > Maintenance > Intervals. See Defining maintenance intervals in the software. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 188: Emptying And Filling Special Reaction Tubes
Emptying special reaction tubes, CHN / CN / N mode ..............194 Filling the special reduction tube, CHN/ CN/ N mode ..............194 Filling the special combustion tube, CHN/ CN/ N mode ..............196 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... -
Page 189: Emptying Special Reaction Tubes, Chns / Cns / S Mode
Dispose of the chemicals according to the relevant disposal categories. Filling the special reduction tube, CHNS / CNS / S mode Note Note the following rules: Observe the filling heights indicated as exactly as possible. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 190 Excessive high-vacuum grease leads to blank C values. Cf. When to replace sealing elements. If there is no quad ring at the top in the plug, insert an ungreased quad ring. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 191: Filling The Special Combustion Tube, Chns / Cns / S Mode
. You must also top up corundum balls, if necessary, when replacing the ash crucible/finger. Safety instruction Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation (on page 11). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 192 Clean any dust off the top of the inside walls of the combustion tube before replacing the combustion tube connector (1). Place the combustion tube connection onto the combustion tube so that it surrounds the ash finger (2) at the top and centers it. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
- Page 193 Observe the following notes regarding further operation: Operating temperature: 1,150 °C, max. 1,180 °C. In CHNS mode, newly filled combustion tubes have to be conditioned before you can perform measurements. Cf. Conditioning newly installed tubes. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 194: Emptying Special Reaction Tubes, Chn / Cn / N Mode
The tube filling must not have any cavities. Therefore, tap the tube wall with a piece of wood or cork when filling the tubes or stuff the absorption agent tightly. Safety instruction Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation (on page 11). Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 195 Observe the following notes regarding further operation: Operating temperature: 650 °C, max. 650 °C. In CHN mode, newly filled tubes have to be conditioned before you can perform measurements. Cf. Conditioning newly installed tubes. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 196: Filling The Special Combustion Tube, Chn/ Cn/ N Mode
Insert a layer of quartz wool (4) and plug it in very tight. Fill in the quartz splinters (6). To do so, tap the tube wall with a piece of wood or cork so as to prevent cavities. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 197 Observe the following notes regarding further operation: Operating temperature: 950 °C, max. 980 °C. In CHN mode, newly filled combustion tubes have to be conditioned before you can perform measurements. Cf. Conditioning newly installed tubes. Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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Page 199: Index
Oxygen determination with TCD - 13 Filling the special combustion tube, CHNS / CNS / S mode - 191 Filling the special reduction tube, CHN/ CN/ N mode Pyrolysis temperature - 30, 53, 77 - 194 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH... - Page 200 38, 40, 41, 48, 62, 64, 65, 72, 100, 109, 126, 137, 139, 144, 153, 155, 160, 181, 183, 189, 190, 191, 194, 196 Working with the operating instructions - 10 Variants Operating Instructions vario EL cube ©Elementar Analysensysteme GmbH...
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