Sensor Replacement - Teledyne OLCT 10 N User Manual

3.3 Sensor replacement

Sensors should be replaced as a part of regular preventative maintenance or following a failed
calibration test.
After a sensor replacement, both manual and automatic calibrations must to be
conducted.
To change the sensor:
1. Remove the detector cover
2. Push and hold down the sensor replacement button (1) for 5 seconds until the solid green
3. LED (2) is on.
4. Release the button
5. Replace the sensor and conduct both manual and automatic calibrations (This is a mandatory
step)
In order to comply with the ATEX rules, the sensor of LEL detectors is soldered to
the card and cannot be changed separately. The entire OLCT 10N detector will
need to be replaced. As the detector is factory calibrated, there is no point
attempting manual calibration. However, a sensor change must be declared using
the maintenance menu of the MX 16 or MX 32v2 or MX 43 or MX 256 controller
(see MX 16 or MX 32v2 or MX 43 or MX 256 manual).
NPO10NGB
Revision J.1
Figure 6: Sensor replacement
OLCT 10 N
DIGITAL GAS DETECTOR
USER MANUAL
13