Teledyne 6400EH - Sulfur Dioxide Analyzer - Manual (Page 64)

Troubleshooting Model 6400EH
Teledyne Analytical Instruments 52
18. The coarse adjustment typically increments the
NORM PMT
signal in 100-300 mV steps.
19. Adjust the HVPS fine adjustment such that the
NORM PMT value
is at or just above the target
NORM PMT
signal from Step 16.
20. Continue adjusting the both the coarse and fine switches until
NORM PMT is as close to (but not below) the target NORM PMT
value from Step 16.
21. Adjust gain adjustment potentiometer until the
NORM PMT value
is ±10 mV of the target level from Step 16.
22. Perform span calibration (see Chapter 7 of the 6400E Manual)
23. Scroll to the
SLOPE function and record the value.
24. If the value of the
SLOPE is between 0.900 and 1.100 the PMT
Hardware calibration is complete.
25. If the value of the
SLOPE is less than 0.900 or greater than 1.100:
a. Multiply the slope value from step 22 by the norm PMT
value from step 19.
b. Repeat steps 17 through 24 using this new value for
NORM
PMT
.
10.4 Technical Assistance
If this manual and its trouble-shooting / repair sections do not solve
your problems, technical assistance may be obtained from:
Teledyne Analytical Instruments
16830 Chestnut Street
City of Industry, CA 91749-1580
Telephone: (626) 961-9221
TWX: (910) 584-1887 TDYANYL COID
Fax: (626) 961-2538
or from our website at: www.teledyne-ai.com .
Before you contact customer service, fill out the problem report
form in Appendix C.