Yokogawa EXAxt SC450 4-Wire Analyzer for Conductivity/Resistivity - Manual (Page 7)

IM 12D08N05-01E
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6. CALIBRATION ...........................................................................................................36
6-1. General ................................................................................................................36
6-2. Cell constant manual ...........................................................................................36
6-3. Cell constant automatic .......................................................................................36
6-4. Air (zero) calibration ............................................................................................36
6-5. Sample calibration ...............................................................................................36
6-6. Temperature coefficient calibration ......................................................................36
6-7. Temperature calibration ......................................................................................37
6-8. Operation of hold function during calibration .......................................................37
6-9. General comments on SC calibration ..................................................................37
7. MAINTENANCE .........................................................................................................38
7-1. Periodic maintenance .........................................................................................38
7-2. Periodic maintenance of the sensor ....................................................................38
7-3. Cleaning methods................................................................................................38
7-4. LCD adjustment ...................................................................................................38
8. TROUBLESHOOTING ...............................................................................................40
8-1. General ...............................................................................................................40
8-2. Calibration check .................................................................................................40
8-3. Polarization check ...............................................................................................40
8-5. Prediction of cleaning needed .............................................................................40
8-6. Poor calibration technique ...................................................................................40
8-7. Error displays and actions ...................................................................................40
9. QUALITY INSPECTION .............................................................................................41
10. SPARE PARTS ........................................................................................................45
APPENDICES ................................................................................................................46
Appendix 1, Temperature compensation ....................................................................46
Appendix 2, TDS readings ..........................................................................................50
Appendix 3, Calibration solutions for conductivity ......................................................51
Appendix 4, Sensor selection for the EXAxt SC450G ................................................53
Appendix 5, How to enter the cell constant for the SC21¨G, SC8SG, and SC4AJ ...55
Appendix 6, HART HHT (275/375) Menu structure ....................................................56
Appendix 7, Control drawing for FM approval ............................................................60
Customer Maintenance Parts List (for Style: S2) ......................CMPL 12D08N05-02E
Revision Record ..............................................................................................................i