Portable Oxygen Monitor | Service Manual | |
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investigation should be made until the discrepancy in readings is resolved. The troubleshooting section of this manual may provide additional assistance in locating the problem.
Note: The MSDS on this material is located in the Appendix. It is also available upon request through the Teledyne Environmental, Health and Safety Coordinator. Contact at
(626)
3.8Troubleshooting
The
Table 3-1 Troubleshooting
Symptom | Why | What To Do |
New sensor responds | If the sensor is new | A) Wait |
slow or drifts. | and was just | recalibrate. |
| removed from its |
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| sealed bag it may |
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| need to run for |
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| several hours. |
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Sensor will not read | Calibration in 100% | A) Recalibrate using dry gas |
below 22 % after | was invalid or the | making sure the reading |
calibration in 100% O2. | room air is | stabilizes before making |
| contaminated with | any adjustments. |
| excess oxygen. | B) Make sure that at least 6" |
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| (30 cm.) of tubing is |
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| attached to the exhaust |
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| side of the tee adapter to |
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| prevent back filling. O2 flow |
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| rate should not exceed 5 |
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| l/min. |
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| C) Oxygen concentration at the |
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| sensor is significantly higher |
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| than 21%. Take the |
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| instrument to a well- |
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| ventilated area and check |
Teledyne Analytical Instruments | 37 |