Xnx Electrochemical (Ec) Sensor Installation - Honeywell XNX Quick Start Manual

2�6�1 XNX Electrochemical (EC) Sensor Installation
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For biased sensors (e.g. Nitrogen Dioxide) remove the sensor stabilizer from the
bottom of the sensor prior to installation.
Using Figure 12 as a guide, follow the procedure below:
1. Check that the label on the new sensor is the correct gas type.
2. Unscrew the weatherproof cover, loosen the retainer locking screw with the
supplied hex key and unscrew the sensor retainer.
3. Plug in the new sensor taking care to align the sensor pins with the
connector.
4. Refit the sensor retainer, tighten the locking screw with the supplied hex
key and refit the weatherproof cover.
5. Countdown time of up to 180 seconds (dependent on sensor type) is
displayed.
6. Acknowledgement of the gas type will be required before proceeding. For
more information on setting gas type, see the XNX Technical Manual Section
2.51 Gas Selection.
7. After the sensor is installed and the gas type is confirmed, the Range, alarm
levels and other important settings must be set; see appropriate section in
Section 4 - Powering the XNX for the First Time.
8. Once the XNX has been configured, calibrate the detector following the
procedures in Section 6.1 - Calibration.
XNX Universal Transmitter Quick Start Guide
Transmitter
Sensor Retainer &
Locking Screw
2
1
Weatherproof Cap
Figure 12. Installing Plug In Sensor
New Sensor
3
4
5
19