User's Manual

Teledyne API Model 401 O

Photometric Calibrator Instruction Manual, 01124, Rev. J2

1.7 Operation Verification

The Model 401 Calibrator is now ready for operation.

1. Read Section 1.3 and all of Section 4 of the manual to understand the Calibrator operation.

2. Turn on the power by pressing the on/off switch on the front panel (see Figure 2-1). The

display should turn on and green (sample) status LED should be energized. The green LED

should blink indicating the instrument has entered the HOLD-OFF mode. The standby mode

can be entered immediately by pressing the EXIT button on the front panel. The red "fault"

light will also be on until the flows, temperatures and voltages are within operating limits.

Clear the fault messages.

3. After a 60 minute warm-up, review the TEST function values in the front panel display by

pushing the leftmost keyboard button labeled TEST. Not every TEST function is a diagnostic

of correct analyzer operation, therefore TEST functions not covered below can be ignored for

now.

4. O3 REF, O3 MEAS: TEST function values should be between 4200 mv and 4700 mv.

5. Pressure: 29 to 30 Inches-Mercury-Absolute at sea level. Other values will be displayed

depending on altitude of analyzer.

6. Sample Flow: 800 cc/min ± 10 %.

7. Sample Temp: Ambient temperature +10°

8. Analytical Lamp Temp: 52° C ± 0.1 The computer drives the temp to this setpoint -it should

be this value and not vary.

9. O

GEN Lamp Temp: 48° C ± 1° C.

10. Box Temp: Ambient ± 10° C.

11. DC Power Supply: 2500 mV ± 100 mv. This is a composite of all of the DC voltages in the

instrument. The value is not important but it should be within the range indicated, and should

be constant.

12. If the TEST functions are within the limits given above the instrument should function

correctly. If there is a problem please read the manual and check your set-up. The Model 401

is now ready for calibration, see Section 3.

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