Tp 5: Tc Detector Balance; Tp 6: Filament Tcd Test - ABB PGC2000 Operation And Service Manual

4. Leak check every connection outside the analyzer on the entire carrier flow path. Perform step 5
only after step 4 has been completed and all leaks are repaired.
5. Loosen inlet fitting nut and check for presence of carrier or makeup gas using a leak detector
solution.
6. If carrier or makeup gas is present, repair or replace the analyzer carrier or makeup gas
regulator. If carrier or makeup gas is not present, check for the presence of carrier or makeup
gas working back toward the gas supply. Loosen each fitting one-at-a-time. Check each fitting
for the presence of gas using a leak detector. Once carrier or makeup gas is detected, the
trouble is isolated between the present and last connection checked. Make necessary repairs.
Tighten all fittings and check for leaks.
7. Adjust carrier or makeup gas pressure for pressure indicated on the analyzer carrier pressure
gauge. If pressure adjusts to the correct value, stop this test and perform Test Procedure 2
(Carrier and Makeup Gas Flow Adjustments) and, if the system has a TCD, perform Test
Procedure 5 (TC Detector Balance).
8. If carrier or makeup pressure cannot be adjusted, repair or replace regulator.

TP 5: TC DETECTOR BALANCE

1. Stop Analysis at the end of the current analysis and make no injection until procedure is
completed.
2. On the Background screen press the F2 (Manual Control) soft key.
3. On the Manual Control Mode screen press the F2 (Detector and Graphics) soft key.
4. On the Chroma Board screen press the F3 (Manually Zero Baseline) soft key. The Detector
Reading should change to a value of 2.00 mV ±0.05 mV.
5. On the Chroma Board screen note the Hardware Zero, Software Zero, and Detector Reading
values.
6. Open the Controller front door and locate the Detector Amplifier on the left side wall of the
Controller.
7. Adjust the TCD Adjust potentiometer (located on the Detector Amplifier) until the Detector
Reading is equal to the sum of the Hardware Zero and Software Zero values noted in step 5.
8. Press the F3 (Manually Zero Baseline) soft key and recheck the readings. The detector is
adequately zeroed when the Hardware Zero percentage is less than 10%.
9. Close and tighten the Controller front door.

TP 6: FILAMENT TCD TEST

It is the customer's responsibility to ensure that the area is safe and and hazard-
free, and will remain so the entire time the analyzer is open. This responsibility
includes ensuring adequate ventilation in analyzer shelter and obtaining proper
work permits, etc.
2000-OSM, F1
CAUTION
7-3