Teledyne MODEL T703 11.5.1.2. Noisy, Unstable, or Non-Linear Span O3 Readings , 11.5.1.3. Slow Response to Changes in Concentration , 11.5.1.4. The Analog Output Signal Level Does Not Agree With Front Panel Readings , 11.5.1.5. Cannot Zero , 11.5.1.6. Cannot Span

Teledyne API T703 Calibrator Operation Manual General Troubleshooting & Repair
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11.5.1.2. Noisy, Unstable, or Non-Linear Span O3 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.
 Check for dirty absorption cell and clean or replace as necessary as described in Section 10.2
 Check for operation of the A/D circuitry on the motherboard. See Section 11.4.9.1.
 Confirm the Sample Temperature, 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
 Check for improper materials in the inlet manifold.
 The photometer needs 800 cc3/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 AOUTS 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 cc3/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.
 Check for dirty absorption cell and clean or replace as necessary as described in Section 10.2
 Check for operation of the A/D circuitry on the motherboard. See Section 11.4.9.1.
 Confirm the Sample Temperature, Sample Pressure and Sample Flow readings are correct. Check and
adjust as required.
 The photometer needs 800 cc3/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).
07223B DCN6378