Analytical Industries GPR-1535 GB Trace PPM Oxygen Transmitter - Manual (Page 20)

Advanced Instruments Inc.
20
3.3 PPM
AUTO SAMPLING
10 PPM RANGE
24.5 C 100 KPA
25. If the calibration is unsuccessful, return to the SAMPLING mode with span gas flowing through the transmitter, make sure
the reading stabilizes and repeat the calibration before concluding the equipment is defective.
26. Before disconnecting the span gas line and connecting the sample gas line, restart if necessary the flow of sample gas and
allow it to flow for 1-2 minutes to purge the air inside the line.
27. Disconnect the span gas line and replace it with the purged sample gas line.
28. Wait 10-15 minutes to ensure the reading is stable and proceed to sampling.
Sampling
The GPR-1535 GB is supplied with a unique Glove Box Housing Assembly that also includes a mounting bracket for sampling
and is designed for measuring a controlled atmosphere and requires only that the sensor be screwed into the upper section of
the Glove Box Housing Assembly.
Advanced Instruments Inc. offers a full line of sample handling, conditioning and
expertise to meet your application requirements. Contact us at 909-392-6900 or e-mail
us at
[email protected]
Ensure the gas stream or composition of the controlled atmosphere of the application is
consistent with the specifications and review the application conditions before initiating
the installation. Consult the factory if necessary to ensure the sample is suitable for
analysis.
Procedure:
1. Following calibration the transmitter display returns to the SAMPLE mode after 30
seconds.
2. Place the sensor in the Sampling Mode of the Glove Box Housing Assembly (right).
3. Select the desired sampling mode - auto or if manual, the range that provides
maximum resolution – as described above.
4. Allow the oxygen reading to stabilize for approximately 10 minutes at each sample
point.
Standby
¾ The transmitter has no special storage requirements.
¾ The sensor should remain connected during storage periods.
¾ Store the transmitter with the power OFF.
¾ If storing for an extended period of time, charge before operating.