Page 2
Cert. No. Q5907 applications. As a part of ABB, a world leader in process automation technology, we offer customers application expertise, service and support worldwide. EN 29001 (ISO 9001) We are committed to teamwork, high quality manufacturing, advanced technology and unrivalled service and support.
1 INTRODUCTION 1.1 Introduction 1.3 7320 Series Systems – Fig. 1.1 • The 7320/1000 low range analyzer primarily for use in potable water applications, such as monitoring the Warning. This instrument uses a high intensity effectiveness of the coagulation control, THM precursor light source which emits ultraviolet (UV) radiation and detection and final treated water quality.
2 MECHANICAL INSTALLATION Caution. Do not damage the equipment by dropping, scraping or otherwise abusing it during the installation process. Although the equipment is ruggedly constructed, it contains precision optical components which may be damaged if subjected to impacts or shock loading.
…2 MECHANICAL INSTALLATION 2.2 Installing the Monitor – Figs. 2.2 and 2.3 Dimensions in mm (in.) 4 x ø 9.5 ( ) holes Fixing Centers for M8 fixing 150 (5.9) 227 (8.9) 252 (9.9) 5 (0.2) 133 (5.2) Fig. 2.2 Overall Dimensions Drill suitable holes for the type Mark-out the fixing centers of the of fixings to be used.
2 MECHANICAL INSTALLATION… 2.3 Installing the Flowcell – Figs. 2.4 and 2.5 Notes. • Connecting pipework may be flexible plastic or rigid PVC, polypropylene or metal depending on the installation. • Isolating valves should be fitted to allow removal of the instrument. •...
Page 8
…2 MECHANICAL INSTALLATION For maintenance purposes the following minimum clearances are recommended: Left (for receiver removal) 150 mm Right (for emitter removal 100 mm (for filling with standard solution) 200 mm Dimensions in mm Standard Solution Filler Sample Outlet (for 8 mm i.d. Tube) Cleaner Receiver Emitter...
Note. Sample regulating valves together with a flow indicator Tundish are recommended to ensure easy maintenance and consistent performance. These devices are not supplied with the 7320 Series Sample Outlet UV Organic Pollution Monitoring Connector system. 7320 100 Valve (A)
3 ELECTRICAL CONNECTIONS Warning. • Although certain instruments are fitted with internal fuse protection, a suitably rated external protection device, e.g. fuse or miniature circuit breaker (MCB), must also be fitted by the installer. • Before making any connections, ensure that the power supply, any high voltage-operated control circuits and high common mode voltage are switched off.
Page 11
3 ELECTRICAL CONNECTIONS… For AC applications the value of the resistor/capacitor network depends on the load current and inductance that is switched. Initially, fit a 100R/0.022 µF RC suppressor unit (part no. B9303) as shown in Fig. 3.2A. If the instrument malfunctions (incorrect readings) or resets (display shows 88888) the value of the RC network is too low for suppression –...
…3 ELECTRICAL CONNECTIONS 3.3 Monitor Connections – Fig. 3.3 ✶ Note. Refer to Fig. 3.1 for Access to Terminals. Caution. Slacken terminal screws fully before Optional Wiring to Alarm Devices making connections. Warning. The power supply earth (ground) must be connected to ensure safety to personnel, reduction of the effects of RFI and correct operation of the power supply interference filter.
3 ELECTRICAL CONNECTIONS 3.3.1 Out of Sample Alarm Input Connections 3.3.3 Out of Service Alarm A digital input is supplied which can be connected to a low flow This alarm can be remotely transmitted via an internal relay indicator or sump level switch. This can be used to give provided.
4 CONTROLS AND DISPLAYS 4.1 Displays – Fig. 4.1 Advance to The upper display window comprises a 4-digit, 7-segment next page digital line and shows actual values (Concentration) of Page 1 Page 2 dissolved organics. The lower display comprises two 16- Parameter 1 Parameter 1 character dot-matrix lines showing the current progam...
…5 PROGRAMMING 5.2 Operating Display Page Note. This is the default page. The programme returns to this point from any of the programming pages if no data has been entered after four minutes. Dissolved Organics Mode Operating Page Diss. Organics mg/l Display in (see Appendix)
5 PROGRAMMING… 5.3 Sensor Calibration Note. Output is held during a calibration. Diss. Note. The calibration pages have a 60 minute timeout after which the Organics instrument reverts to normal operation. Sensor Calibrate Sensor Calibration Page Security Code Cal. User Code Calibration Access Code 0000 Enter the code in the range 0000 to 9999.
…5 PROGRAMMING 5.5 Set Up Parameters Security Code Set Up Parameters Page Set Up Parameter Set Up Outputs Select the appropriate sensor: Sensor Type 7320 100 = Low Range Sensor. 7320 100 7320 200 = High Range Sensor. 7320 200 7320 300 = Coagulation Dose Sensor.
5 PROGRAMMING 5.6 Set Up Outputs Set Up Parameter Set Up Outputs Page Set Up Outputs Factory Settings Set the current output span between the following limits: Current o/p Span Low range sensor: 0 to 2 and 0 to 20 mgl –1 10.00 mg/l C High range sensor: 0 to 20 and 0 to 100 mgl...
6 MAINTENANCE 6.1 Standard Solutions 6.1.3 Calibration Checks Because UV absorption is a non-specific, aggregate The system uses an optical system with very stable electronics measurement of organic carbon concentration, true standards which avoids the risk of electronic drift. Therefore, routine are not available.
6 MAINTENANCE… ✶ 6.2.2 Dismantling the Flowcell for Cleaning and Important Notes. Wiper Maintenance – Figs 6.1 and 6.2 • Ensure that O-rings are removed with the screw collars; it is possible for these seals to be left inside the flowcell.
Page 22
…6 MAINTENANCE Sample Outlet Unscrew the collar and carefully Unscrew the collar and carefully withdraw the module. withdraw the module. Optical Emitter Inlet/Isolating Valve Optical Receiver Seal Drain Valve Split the flowcell to access the flow chamber – see Fig. 6.3 for procedure. Clean the inside of the flow chamber and other assemblies thoroughly.
Page 23
6 MAINTENANCE… Vew from emitter end Remove the securing screws to free the mounting plate from the angle bracket (2). Remove the four stainless steel closing screws holding the flowcell halves together. Thoroughly check and clean the inside of the cell. The wiper blades can also be serviced/changed –...
Page 24
…6 MAINTENANCE Wiper Drive Shaft (Square Section) Note. The proper functioning Upper of the wiper system depends on Wiper – blade the correct assembly of the facing in washers and orientation of the wiper blades. Remove the wiper blades securing nut. Remove the blades and washers from the drive shaft.
6 MAINTENANCE… 6.3 Unscheduled Servicing 6.3.1 Monitor Diagnostic Information The software incorporates diagnostic facilities which provide information on the status of the instrument (lower line of the Program Parameters display) in the Operating Display Page. All diagnostic messages result in de-energising the 'Out of Service' relay with the exception of the 'Out of Range' condition.
…6 MAINTENANCE 6.4 Replacing the Emitter and Receiver Modules 6.4.2 Adjusting the Emitter Brightness Having replaced the emitter/receiver module(s) (procedure in 1) Fill the flowcell with high purity water. Section 6.4.1) it will be necessary to adjust the emitter brightness (procedure in Section 6.4.2). 2) Enter the Factory Programming Page (see overpage) using the security code 73.
Page 27
6 MAINTENANCE… Set Up Outputs Factory Settings Factory Settings These parameters are set at the factory and will not need further adjustment on site. Access must only be undertaken by nominated personnel. Diss. Organics page Secure Factory Settings Access Factory Set Code Enter the required security code (between 0000 and 9999).
Page 28
…6 MAINTENANCE ...Continued This setting does not need to be adjusted. Low Linear Val. 20.00 mg/l This setting does not need to be adjusted. Calculating Coef. Low Linear Coef. This setting does not need to be adjusted. 1.29 High Linear Val. This setting does not need to be adjusted.
7 SPECIFICATION Overall Specification Current output: ......0 to 10, 0 to 20 and 4 to 20mA. Range (based on potassium hydrogen phthalate calibration Maximum load standards): resistance: ....... 750 ohms. 7320 100 (low range) ..0 to 20 mgl –1 Accuracy: ......
APPENDIX A.1 Inferred Units With the exception of 1, the conversion factor needs to be determined by laboratory analysis of the actual sample and it In normal mode of operation the instrument is calibrated in assumes that the factor is constant. mg/l dissolved organic carbon.
Page 35
– Food & Beverage – Manufacturing United Kingdom – Metals and Minerals – Oil, Gas & Petrochemical ABB Limited – Pulp and Paper Tel: +44 (0)1453 826 661 Fax: +44 (0)1453 827 856 Drives and Motors United States of America •...