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Fluke 6109A Operator's Manual

Fluke 6109A Operator's Manual

Portable calibration baths
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6109A/7109A
Portable Calibration Baths
Operators Manual
January 2017
© 2017 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
1.800.561.8187
information@itm.com
www.
.com

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  • Page 1 6109A/7109A Portable Calibration Baths Operators Manual January 2017 © 2017 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies. 1.800.561.8187 information@itm.com www. .com...
  • Page 2 Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price.

  • Page 3: Table Of Contents

    Table of Contents Title Page Introduction .................... 1 Contact Fluke Calibration ..............1 Safety Information ................. 2 Symbols ....................3 Specifications ..................4 Temperature Source Specifications ..........4 Input Module Option Specifications ........... 5 General Specifications ............... 6 Unpack the Product ................7 Product Overview ..................
  • Page 4 6109A/7109A Operators Manual Configure the mA Input ..............24 Operation ....................25 Display ....................25 Basic Operations ................26 Immerse Temperature Probes ............26 Set the Setpoint ................26 Preset Setpoints ................27 Set the Cutout ................27 Stop Heating or Cooling ..............27 Select the Temperature Unit ............

  • Page 5: Introduction

    38 mm (1.5 inch) flanged tri-clamp probes and a reference thermometer. The 7109A tests the temperature range of -25 °C to 140 °C. The 6109A covers the temperature range of 35 °C to 250 °C. Traceable NVLAP accredited calibration is included. Models that equipped with the Input Module can also measure an RTD, thermocouple, or 4-20 mA transmitter and a reference PRT.

  • Page 6: Safety Information

    6109A/7109A Operators Manual Safety Information A Warning identifies conditions and procedures that are dangerous to the user. A Caution identifies conditions and procedures that can cause damage to the Product or the equipment under test. Warning To prevent possible electrical shock, fire, or personal injury: •...

  • Page 7: Symbols

    Portable Calibration Baths Symbols Symbols The symbols used in this manual and on the Product are shown in Table 1. Table 1. Symbols Symbol Description  WARNING. HAZARDOUS VOLTAGE. Risk of electric shock.  WARNING.RISK OF DANGER.  WARNING. HOT SURFACE. Risk of burns. Consult user documentation.

  • Page 8: Specifications

    6109A/7109A Operators Manual Specifications The product specifications describe the Absolute Instrumental Uncertainty of the Product at 95 % level of confidence (coverage factor k = 2) within one year from calibration. The product specifications include environmental temperature effects from 13 °C to 33 °C.

  • Page 9: Input Module Option Specifications

    Portable Calibration Baths Specifications Input Module Option Specifications The Product specifications describe the Absolute Instrumental Uncertainty of the Product at 95 % level of confidence (coverage factor k = 2) within one year from calibration. The Input Module specifications include calibration uncertainty, linearity, repeatability, resolution, stability, and environmental temperature effects from 13 °C to 33 °C.

  • Page 10: General Specifications

    Depth: 400 mm (15.7 in) Weight ................7109A: 20 kg (45 lb) 6109A: 16 kg (35 lb) Fluid Volume ..............2.5 liters (0.66 gal) Fluid Working Area ............75 mm x 75 mm (3 in x 3 in) Maximum Fluid Depth ............154 mm Remote Interface ..............

  • Page 11: Unpack The Product

    Product needs to be shipped or moved to another facility. Make sure that there is no damage to the Product. If any parts are damaged, contact Fluke Calibration. If it is necessary to reship the Product, use the original container. To order a new container, see Contact Fluke Calibration.
  • Page 12 6109A/7109A Operators Manual icu07.eps Number Description  Tank - The stainless steel tank contains the bath fluid. Bath Fluid - Temperature sensors are inserted into the bath fluid for calibration. Heating  and cooling devices attached to the walls of the tank heat and cool the bath fluid.

  • Page 13: Front

    Portable Calibration Baths Product Overview Front The front of the Product is shown in Figure 2. icu01.eps Number Description Fan - Cools the tank and heating devices. Keep at least 150 mm of open space around the  Product and 300 mm behind it to avoid obstruction of the air flow. Keep objects away from the fan opening as the fan produces strong suction.

  • Page 14: Control Panel

    6109A/7109A Operators Manual Control Panel The control panel is shown in Figure 3. 6109A PORTABLE CALIBRATION BATH 35˚C TO 250˚C MONITOR PROGRAM SETPOINT SETUP SELECT BACK STOP ENTER icu05.eps Number Description Display - Shows the information about the operation of the Product such as the fluid ...

  • Page 15: Back

    Fuses - Protect the Product from excessive current. If a fuse appears to be blown,  contact Fluke Calibration for assistance. See Contact Fluke Calibration. Overflow Tube - Directs excess bath fluid into the optional overflow container. If the ...

  • Page 16: Input Module (Option)

    6109A/7109A Operators Manual Input Module (Option) The 7109A-P and 6109A-P come with an Input Module that measures various types of temperature sensors. This optional input module is shown in Figure 5. F 50 mA 250V icu02.eps Number Description Current Fuse - Protects the Input Module and connected devices from accidental short ...

  • Page 17: Provide Ventilation

    The choice of bath fluid is important for the Product to achieve full temperature range and performance specifications. Table 2 lists the recommended bath fluid for each model. Table 2. Recommended Bath Fluids 7109A 6109A Fluke 5012 Silicone, 10 centistoke Fluke 5014 Silicone, 50 centistoke 1.800.561.8187 information@itm.com www. .com...

  • Page 18: Attach The Probe Access Cover

    6109A/7109A Operators Manual Other bath fluids can be used, but the temperature range may be more limited. Temperature stability and uniformity also varies when other fluids are used. As a rule, bath fluid viscosity should be no greater than 50 centistokes at any operating temperature.
  • Page 19 The Product comes with the appropriate line power plug for the country of purchase. If a different type is necessary, refer to Figure 6 for the correct mains line power plug types available from Fluke Calibration. North American/Japan Universal Euro...

  • Page 20: Attach Accessories

    Attach Accessories Accessory attachment is explained in the subsequent sections. Fluid Overflow Accessory Fluke Calibration recommends the fluid overflow accessory kit (model 7109- 2083) to avoid spills caused by thermal expansion of the fluid or an overfilled tank. To install the bath fluid overflow accessory, see Figure 7: 1.

  • Page 21: Probe Clamp

    Portable Calibration Baths Installation Probe Clamp Use the probe clamp accessory (Model 7109-2051, purchased separately) to hold temperature probes in place while they are calibrated. The post of the probe clamp screws into any of the four the M4 size threaded holes located near the corners of the top panel.

  • Page 22: Adjustable Probe Fixture

    6109A/7109A Operators Manual Adjustable Probe Fixture Use the adjustable probe fixture (model 7109-2027) to hold up to four tri-clamp temperature sensors. The device fits inside the tank opening and attaches to the top panel of the Product with four thumb screws. The height of the platform can be adjusted for proper immersion of the stems and flanges of the temperature sensors.

  • Page 23: Turn On The Product

    Portable Calibration Baths Turn On the Product Turn On the Product Push the power switch on the back panel of the Product to the I side to turn on the Product. The Product can take up to 40 seconds for the Product to become fully operational.

  • Page 24: Set The Password

    For best results, use a high-quality, 100 Ω, four-wire, platinum resistance thermometer (PRT) calibrated with low uncertainty such as Fluke 5615-6. Table 4 shows how a reference probe can be used to improve temperature accuracy.
  • Page 25 Use the provided clamp-on ferrites to reduce radio-frequency emissions and to ensure electromagnetic compatibility with other equipment. Loop a section of cable near the connector through the ferrite as shown in Figure 10. Fluke Calibration also recommends a ferrite for the test sensor.

  • Page 26: Configure The Reference Probe Coefficients

    6109A/7109A Operators Manual Configure the Reference Probe Coefficients Probe coefficients must be configured for the PRT temperature to be accurately measured. If the reference probe has a properly-programmed INFO-CON connector, probe coefficients are automatically configured when the probe is connected to the Product. The connection icon shows at the top of the display to show that the probe coefficients were successfully transferred from the connector.

  • Page 27: Configure The Rtd Type

    Portable Calibration Baths Connect the Reference Probe and Test Sensor Configure the RTD Type To configure the test RTD to accurately measure the temperature or the resistance of the RTD: 1. Push . 2. Push  (Probe). 3. Push  (DUT). 4.

  • Page 28: Configure The Thermocouple Type

    6109A/7109A Operators Manual Configure the Thermocouple Type To configure the thermocouple type to measure the temperature of the thermocouple accurately: 1. Push . 2. Push  (Probe). 3. Push  (DUT). 4. Push  to edit the DUT type. 5. Push  or  to move the highlight to the Thermocouple control.

  • Page 29: Operation

    Portable Calibration Baths Operation Operation This section explains how to operate the Product after it is set up. The user interface (UI) and basic key actions are explained in the subsequent sections. Display The display is explained in Figure 13. icu06.eps Number Description...

  • Page 30: Basic Operations

    6109A/7109A Operators Manual Basic Operations Common operations are explained in the subsequent sections. Immerse Temperature Probes For best results: • Check that the bath fluid level is between the MIN and MAX marks on the stir guard. • See that the bath fluid stirs well when you enable temperature control.

  • Page 31: Preset Setpoints

    Portable Calibration Baths Operation Preset Setpoints Use presets to set the setpoint to frequently-used temperatures. To define presets: 1. Push . 2. Push  (Presets) to see the list of preset setpoints. 3. Push  as needed to choose one of the numbered setpoints. 4.

  • Page 32: Control The Bath Temperature With A Reference Probe

    Operators Manual Control the Bath Temperature with a Reference Probe The 7109A-P and 6109A-P allow measurements from the reference probe to be used to control the fluid temperature with more accuracy. Set up the reference as explained in Configure the Reference Probe Coefficients.

  • Page 33: Run A Program

    14. Push  to save the value. 15. Push  (Save) to save the program. If the Input Module (7109A-P or 6109A-P) is installed, the module can collect the sensor readings and produce a test report. To turn on program report: 1.

  • Page 34: Menu Guide

    6109A/7109A Operators Manual To run a program: 1. Push . 2. Push  or  to choose a program. 3. Push  (Select). 4. Push  (Run Program). After the program completes, to view the reports: 1. Push . 2. Push  (Reports).

  • Page 35: Setpoint

    (Monitor)  View Graph Plot temperature over time. The graph scales automatically to best fit the data. For the 7109A-P and 6109A-P, the , , and  softkeys select which parameter to plot—either the control sensor, reference probe, or DUT sensor.

  • Page 36: Program

    6109A/7109A Operators Manual (Setpoint > Presets)  Edit Change the temperature of the selected preset. (Setpoint)  Ramp Rate Set the rate at which the Product heats or cools. • Ramp Rate is the rate of change when heating or cooling. The setting is only effective when Ramp Enable is ON.
  • Page 37 Portable Calibration Baths Menu Guide (Program > Select)  Stop Program Stop the program. This function only appears if a program is running. Once stopped, a program cannot be continued. (Program > Select)  Edit Change the selected program. A list of program parameters shows: •...
  • Page 38 (Program > Select)  Options Change general program and report settings. If Program Beep is ON, the Product beeps when the program finishes. In the 7109A-P and 6109A-P, settings to manage reports are also available. • Report determines whether a test report is created. Readings are captured at the end of the dwell time and added to the report.

  • Page 39: Setup

    Up to eight programs can be defined. (Program)  Delete Delete the selected program. (Program)  Reports (7109A-P and 6109A-P) Select a report for view or export. A list of stored test reports appears. Push  or  to select a report.
  • Page 40 Stability Beep controls whether the beeper sounds when the control indicator changes to Stable. • Control Sensor (7109A-P and 6109A-P only) selects which temperature sensor is used for temperature control. This feature is useful to improve the temperature accuracy. The usual configuration (Internal) uses the internal PRT.
  • Page 41 The password is required to access this menu. The default password is 1234. The password is the security code required by any protected menu, including this one. IMPORTANT: Do not lose your password. If you do lose your password, contact Fluke Calibration. 1.800.561.8187 information@itm.com www. .com...
  • Page 42 6109A/7109A Operators Manual Security determines which menus and functions require the password. Regardless of the Security setting, these menus are protected: • Setup > Instrument > More > Control • Setup > Instrument > More > Password • Setup > Instrument > More > Service > System Status > Update Firmware •...
  • Page 43 Portable Calibration Baths Menu Guide • Heating is the relative size of the signal that controls the heating devices. A negative number indicates cooling. • Cutout Code indicates the specific cause of a cutout event. This number is normally 0. •...
  • Page 44 4 mA. • mAC22 adjusts the accuracy of current measurements at 22 mA. (Setup)  Probe (Models 7109A-P and 6109A-P) Configure temperature probes connected to the Input Module. The Probe screen shows the present configuration.
  • Page 45 Portable Calibration Baths Menu Guide • ID is a name to identify the reference probe. • Probe Calibration is the date the reference probe was calibrated. • PRT Type is the method used to characterize the reference probe. • RTPW, A, B, C, A4, and B4 are coefficients for a PRT characterized according to the ITS-90 standard.

  • Page 46: Remote Operation

    6109A/7109A Operators Manual (Setup > Probe > DUT)  Default Scale Change Span, Offset, and Unit back to the factory default values, which are 16, 4, and “mA” respectively. Remote Operation A computer can control the Product with either the USB or RS-232 remote interface.

  • Page 47: Test

    9-pin subminiature D connectors, such as Fluke item number 2200962. The bus protocol is 8 data bits, 1 stop bit, no parity, and no flow control. The baud rate is selectable from 1200 to 38400.

  • Page 48: Commands

    SYSTem:PASSword:CENable (<SYSTem:PASSword[:CENable]>). Some commands are conditionally password protected depending on the security setting. Some commands, as noted, are only available in the 7109A-P and 6109A-P. Command Reference Commands are listed below in alphabetical order with explanations.
  • Page 49 Operation complete. Since all commands are sequential, this command is not necessary for synchronization. *OPT? Return the product configuration. The response is 1 if the Product is equipped with the Input Module (7109A-P or 6109A-P only). It is 0 otherwise. *RST Reset operational settings. • Stop temperature control •...
  • Page 50 6109A/7109A Operators Manual *SRE <numeric_value> *SRE? Set bits in the IEEE-488.2 Service Request Enable Register. <numeric_value> is a decimal number that range from 0 to 255. This determines which bits of the Status Byte Register affect the MSS bit of the Status Byte Register.
  • Page 51 Portable Calibration Baths Commands CALCulate:AVERage:CLEAr Clear the statistical average and standard deviation for fluid temperature, reference probe, and DUT sensor readings. CALCulate:AVERage:WINDow <numeric_value> CALCulate:AVERage:WINDow? Set the time window in seconds for the moving average and standard deviation. <numeric_value> is either 10, 60, or 300. CALCulate1:AVERage[:AVERage]? (-P models only) Return the moving average of the reference probe readings.
  • Page 52 6109A/7109A Operators Manual CALCulate1:CONVersion:PARameter:VALue <parameter>,<n> CALCulate1:CONVersion:PARameter:VALue? <parameter> (-P models only) Set the value of the given reference probe characterization coefficient. <parameter> is the name of the characterization coefficient. <n> is the value the characterization coefficient. This command is conditionally password protected.
  • Page 53 Portable Calibration Baths Commands CALCulate2:AVERage:SDEViation? (-P models only) Return the moving standard deviation of the DUT sensor readings. The response is a temperature value in °C or °F and depends on the temperature unit setting. CALCulate2:CONVersion:CATalog? [<function>] (-P models only) Return the list of supported RTD types or thermocouple types. <function>...
  • Page 54 6109A/7109A Operators Manual CALCulate2:SCALe:OFFSet <numeric_value>|DEF CALCulate2:SCALe:OFFSet? (-P models only) Set the mA scaling offset. <n> is the reading at 4 mA. The default is 4. This command is conditionally password protected. CALCulate2:SCALe:UNIT <string>|DEF CALCulate2:SCALe:UNIT? (-P models only) Set the mA scaling unit of measurement.
  • Page 55 Portable Calibration Baths Commands DISPlay:DATE:FORMat <format> DISPlay:DATE:FORMat? Set the format for dates on the display. <format> is either “YYYY-MM-DD”, “YYYY/MM/DD”, “DD/MM/YYYY”, “DD.MM.YYYY”, or “MM-DD-YYYY”. DISPlay:DECimal:FORMat <boolean> DISPlay:DECimal:FORMat? Select the decimal point for numbers on the display. <boolean> is either 0 for period ‘.’ or 1 for comma ‘,’. DISPlay:LANGuage <language>...
  • Page 56 6109A/7109A Operators Manual INITiate (-P models only) Measurement is continuous and automatic, so no triggering is necessary. INITiate:CONTinuous 1 INITiate:CONTinuous? (-P models only) Measurement is always continuous. INPut2:MAMP:LPOWer <boolean>|DEFault INPut2:MAMP:LPOWer? (-P models only) Turn transmitter loop power on or off.
  • Page 57 Portable Calibration Baths Commands PROGram:BEEP <boolean>|DEFault PROGram:BEEP? Turn program beep on or off. <boolean> is 0 (OFF) or 1(ON, default). This command is conditionally password protected. PROGram:CATalog? Return a list of defined programs. The response is a series of comma-separated program names, each enclosed in quotation marks.
  • Page 58 6109A/7109A Operators Manual Table 7. Program Variables Setting Name Description Cycles CYCL Number of cycles. Range is 1 to 99. Default is 1. Order Setpoint order. Range is 0 (linear, default) or 1 (up/down). Dwell Time DWEL Dwell time in minutes. Range is 1 to 900. Default is 10.
  • Page 59 Portable Calibration Baths Commands PROGram[:SELected]:DEFine <name>[,<numeric_value>[,...]] PROGram[:SELected]:DEFine? Create a new temperature program and select the new program for further operations. This command has the same function as PROGram:EXPlicit:DEFine. PROGram[:SELected]:NAME <name> PROGram[:SELected]:NAME? Select a program for further operations. <name> is the name of an existing program enclosed in quotation marks. PROGram[:SELected]:NUMBer <variable>,<numeric_value>|DEFault PROGram[:SELected]:NUMBer? <variable>...
  • Page 60 6109A/7109A Operators Manual PROGram:REPort:REFerence <boolean>|DEFault PROGram:REPort:REFerence? (-P models only) Select the reference source for program reports. <boolean> is 0 (internal control sensor) or 1(external reference probe, default). This command is conditionally password protected. PROGram:REPort:TOLerance <numeric_value>|DEFault PROGram:REPort:TOLerance? (-P models only) Set the pass tolerance for program reports.
  • Page 61 Portable Calibration Baths Commands SENSe2:DATA? (-P models only) Return the DUT input measurement as resistance in ohms, voltage in mV, or current in mA. SENSe2:FUNction <function> SENSe2:FUNction? (-P models only) Select the function for the Input Module DUT inputs. <function> is either RTD, TC, MA, or NONE. This command is conditionally password protected.
  • Page 62 6109A/7109A Operators Manual SOURce:LCONstants:DERivative <numeric_value> SOURce:LCONstants:DERivative? Set the derivative loop constant for temperature control. Control parameters affect the temperature stability of the Product and should only be changed by a qualified personnel. This command is password protected. SOURce:LCONstants:INTegral <numeric_value> SOURce:LCONstants:INTegral? Set the integral loop constant for temperature control.
  • Page 63 Portable Calibration Baths Commands SOURce:SENSe:CALibration:PARameter<index> <numeric_value> SOURce:SENSe:CALibration:PARameter<index>? Set a calibration parameter for the control sensor. <index> specifies the calibration parameter; 1: TEMP1; 2: TEMP2; 3: TEMP3. <numeric_value> is the value to which the calibration parameter is set. Calibration parameters should only be changed by a qualified technician as part of a calibration procedure.
  • Page 64 6109A/7109A Operators Manual SOURce:SPOint <numeric_value> SOURce:SPOint? [MINimum|MAXimum] Set the temperature setpoint. <numeric_value> is temperature in °C or °F and depends on the temperature unit setting. The range depends on the model. Example: SOUR:SPO 50.02 Temperature control must be turned on for the setpoint to take effect (see the command OUTPut:STATe).
  • Page 65 Portable Calibration Baths Commands SOURce:STIR:CALibration <numeric_value> SOURce:STIR:CALibration? Set the reference stir power percent. <numeric_value> is the stir power percent. Calibration parameters should only be changed by a qualified technician as part of a calibration procedure. This command is password protected. SOURce:STIR:POWer? Return the stir power percent.
  • Page 66 6109A/7109A Operators Manual STATus:PRESet Set the Operation Status Mask register to 0 and the Questionable Status Mask register to 0. STATus:QUEStionable:CONDition? Return the SCPI Questionable Status Condition register. (-P models only) The response is 16 if the latest reading of the reference probe or DUT sensor is out of range.
  • Page 67 Portable Calibration Baths Commands SYSTem:COMMunicate:SERial:LINefeed <boolean> SYSTem:COMMunicate:SERial:LINefeed? Enable LF termination character. <boolean> is 0 (OFF) or 1 (ON). When this setting is on, CR and LF are both transmitted at the end of every response. If the setting is OFF, only CR is transmitted.
  • Page 68 6109A/7109A Operators Manual SYSTem:PASSword:NEW <password> Set the password. <password> is a four-digit number. This command is password protected. SYSTem:PASSword:PROTection <boolean> SYSTem:PASSword:PROTection? Set the password protection level. <boolean> is 0 (OFF) or 1 (ON). When this setting is on, conditionally password protected commands are protected.

  • Page 69: Maintenance

    Portable Calibration Baths Maintenance Maintenance This section explains routine operator maintenance necessary to keep the Product in optimal condition. Clean the Product The tank and other metal parts are made of stainless steel to resist corrosion. Keep the outside of the Product dry to prevent fluid seeping inside or spreading to other equipment.

  • Page 70: Check The Bath Fluid

    6109A/7109A Operators Manual Check the Bath Fluid Optimal temperature performance requires bath fluid in good condition. Check the fluid often to ensure it stirs easily. Replace the fluid before it begins to polymerize. The fluid’s viscosity should be 50 centistokes or less at the minimum temperature.

  • Page 71: Transport The Calibration Bath

    Portable Calibration Baths Calibrate the Product 10. Once the tank is empty, insert the drain plug and tighten it securely. 11. Replace the drain cover. 12. Use a paper towel or other clean absorbent material to remove any fluid that remains in the tank.

  • Page 72: Temperature Setpoint Calibration

    Equipment Specifications Suggested Model 0.008 °C at 0 °C Reference PRT Fluke Calibration 5628 PRT readout 20 ppm Fluke Calibration 1560/2560 Table 10 lists the calibration points for each model. Calibration points marked with an asterisk are also alignment points.

  • Page 73: Temperature Stability Calibration

    Portable Calibration Baths Calibrate the Product Alignment is required if the magnitude of any error is greater than 50 % of the specification. Adjustments are made to the calibration parameters listed in Table 9. These are accessible in the Bath Calibration menu after the password is entered.

  • Page 74: Temperature Uniformity Calibration

    6109A/7109A Operators Manual Temperature Uniformity Calibration Temperature uniformity calibration measures the temperature difference between a test location and a reference location. Perform this procedure for each location within the fluid where devices will be placed for measurement. Also perform the procedure at each setpoint at which devices will be measured.

  • Page 75: Input Module Calibration

    Portable Calibration Baths Calibrate the Product Input Module Calibration This section provides instructions to calibrate and adjust the Input Module in the 7109A-P and 6109A-P. Table 11 lists the required equipment. Table 11. Equipment for Input Module Calibration Equipment Specifications Suggested Model 0 Ω...
  • Page 76 6109A/7109A Operators Manual Table 12 lists calibration points. Those marked with an asterisk are also alignment points. Table 12. Calibration Points for Input Module Calibration Calibration Number Terminals Configuration Quantity Parameter 0 Ω REF1C0 25 Ω (none) Reference: 100 Ω...
  • Page 77 The source for the 25 °C/35 °C thermocouple calibration point is the E thermocouple immersed in the Product beside the reference PRT. Set the bath to 25 °C (7109A) or 35 °C (6109A). Get the reference temperature from the reference PRT and readout.

  • Page 78: Troubleshooting

    6109A/7109A Operators Manual Troubleshooting Refer to Table 13 for help with issues with Product operation. If the problem is still not resolved, contact Fluke Calibration Service. See Contact Fluke Calibration. Table 13. Troubleshooting Problem Actions Allow 60 seconds for the CPU and display to start up.
  • Page 79 Portable Calibration Baths Troubleshooting Problem Actions Fluid normally expands as the temperature increases. Use the overflow kit to capture excess fluid. Fluid spills out of the tank Remove the overflow plug. Do not overfill the tank. Fluid normally produces fumes at high temperatures. Use a ventilation duct to capture vapors.

  • Page 80: Fluid Selection

    6109A/7109A Operators Manual Fluid Selection Other bath fluids can be used in the Product besides the recommended silicone fluid. Different fluids may have properties that are better suited for a particular application. This section provides information about bath fluid characteristics to assist in the selection of a bath fluid and operation of the Product.

  • Page 81: Viscosity

    Portable Calibration Baths Fluid Selection Viscosity The Product performs best when the fluid’s viscosity is 50 centistokes or less. The lower the viscosity, the more easily the fluid stirs and the better the temperature uniformity and temperature stability. Silicone fluid generally becomes more viscous over time. The fluid can degrade and thicken much more quickly when operated near the upper limit of its temperature range.

  • Page 82: Disposal

    50 centistokes viscosity at the lowest temperature at which it will be used. Figure 15 shows the temperature ranges of several types of silicone fluid supplied by Fluke Calibration. Fluke model numbers identify the fluids. Nominal viscosity at 25 °C is shown below the model number. The minimum temperature is the point at which viscosity is about 50 centistokes when the fluid is new.

  • Page 83: Customer-Replaceable Parts And Accessories

    Optional accessories are shown in Table 14. Table 14. Customer Replaceable Parts and Accessories Description Model Fluke Part Number Silicone fluid, 10 centistoke (for 7109A) 5012-3.8L 2430079 Silicone fluid, 50 centistoke (for 6109A) 5014-3.8L 2430135 Fluid overflow kit 7109-2080 4810215 Single Probe clamp kit 7109-2051...
  • Page 84 6109A/7109A Operators Manual 1.800.561.8187 information@itm.com www. .com...

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