Process for maintenance of GD10P gas detectors with the aid of a handheld terminal (re-zeroing tool)
This document outlines the extended on-site maintenance procedures for the Simrad GD10P gas detector. It explains that while the detector is calibrated at the factory, slight offsets may occur due to environmental factors like heat or vibration. The manual provides guidelines for using a dedicated handheld terminal to perform re-zeroing, which should only be done by trained personnel in a controlled environment.
| Zero point offset tolerance | up to 4.5mA at room temperature |
|---|---|
| Recommended re-zeroing threshold | less than 5.0 mA |
| Re-zeroing temperature range | 20 – 25 degC |
| Power supply requirement | 24 VDC / 0.3 A |
| Calibration duration (newer units) | approx. 3 minutes |
| Calibration duration (pre-summer 1998) | 6 min |
The handheld terminal shall be used by personnel trained specifically by Simrad staff only.
The procedure must be performed in a controlled environment with a temperature of 20 – 25 degC.
Detectors with an offset of less than 5.0 mA (6%) at room temperature should not be re-zeroed on site.
Yes, the opening of the detector is reported as it normally voids the warranty.