Teledyne 6200T - Sulfides Analyzer - Manual (Page 275)

6200T Total Sulfur Analyzer Troubleshooting
Teledyen Analytical Instruments 275
22. Allow the instrument to warm up for 60 minutes.
23. Perform a PMT Hardware calibration (refer to Section 12.7.2.8).
24. Perform a zero point and span calibration (refer to Section 9).
12.7.2.8. PMT Hardware Calibration (Factory Cal)
The sensor module hardware calibration adjusts the slope of the PMT output when the
instrument’s slope and offset values are outside of the acceptable range and all other
more obvious causes for this problem have been eliminated.
Figure 12-17: Pre-Amplifier Board (Preamp PCA) Layout
1. Set the instrument reporting range type to SNGL (refer to Section 5.4.3.1).
2. Perform a zero–point calibration using zero air (refer to Section 9).
3. Let the instrument stabilize by allowing it to run for one hour.
4. Adjust the UV Lamp (refer to Section 12.7.2.5).
5. Perform a LAMP CALIBRATION procedure (refer to Section 5.9.6).
6. Locate the Preamp PCA (refer to Figure 12-16).
7. Locate the Following Components On the Preamp PCA (
8. Figure 12-17):
9. HVPS coarse adjustment switch (Range 0-9, then A-F).
10. HVPS fine adjustment switch (Range 0-9, then A-F).
11. Gain adjustment potentiometer (Full scale is 10 to 12 turns).
12. Set the HVPS coarse adjustment to its minimum setting (0).
13. Set the HVPS fine adjustment switch to its maximum setting (F).
14. Turn the gain adjustment potentiometer clockwise to its maximum setting.