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TELEDYNE API
General Troubleshooting & Repair of the M703E Calibrator M703E Calibrator Operators Manual
11.5.1.2. Noisy, Unstable, or Non-Linear Span O
3
Readings
Check for leaks in the pneumatic systems as described in Section10.2.
Check for proper operation of the meas/ref switching valve as described in Section11.5.2.
Che
ck for dirty absorption cell and clean or replace as necessary as described in Section 10.2
Che
ck for operation of the A/D circuitry on the motherboard. See Section 11.4.8.1.
Confirm the Sample Tem
perature, Sample Pressure and Sample Flow readings are correct. Check and
adjust as required.
11.5.1.3. Slow Response to Changes in Concentration
Check for dirty absorption cell and clean or replace as necessary as described in Section 10.2
Check for pneumatic leaks as described in Section 10.2
Che
ck for improper materials in the inlet manifold.
The photometer needs 800 cc
3
/min of gas flow. Make sure that this is accounted for when calculating total
required output flow for the calibrator (see Section 3.4.7).
11.5.1.4. The Analog Output Signal Level Does Not Agree With Front Panel Readings
Confirm that the recorder offset (see Section 6.9.1.5) is set to zero.
Perform an AIO calibration (see Section 6.9.2) and photometer dark calibration (see Section 8.1.4).
11.5.1.5. Cannot Zero
Check for leaks in the pneumatic system as described in Section 10.2.
Confirm that the Zero gas is free of Ozone.
The photometer needs 800 cc
3
/min of gas flow. Make sure that this is accounted for when calculating total
required output flow for the calibrator (see Section 3.4.7).
11.5.1.6. Cannot Span
Check for leaks in the pneumatic systems as described in Section 10.2.
Check for proper operation of the meas/ref switching valve as described in Section11.5.2.
Che
ck for dirty absorption cell and clean or replace as necessary as described in Section 10.2
Che
ck for operation of the A/D circuitry on the motherboard. See Section 11.4.8.1.
Confirm the Sample Tem
perature, Sample Pressure and Sample Flow readings are correct. Check and
adjust as required.
The photometer needs 800 cc
3
/min of gas flow. Make sure that this is accounted for when calculating
total required output flow for the calibrator (see Section 3.4.7).
198 05744 Rev B