Electrochemical Sensor Installation - Honeywell XNX-AM Series Technical Manual

XNX Universal Transmitter
HART
Adaptor
Sensor Cartridge
Sensor Retainer
Weatherproof Cap
Sensor Mounted to
Remote Sensor Kit
Figure 40. EC personality wiring
Installation and Operation
Optional Local HART
IS Barrier must
be connected to J1
S1 S2
J1 HART
1
2
3
4
+ 5
- 6
J2 EC Barrier
EC IS Barrier must
be connected to J2
Local HART
EC IS Barrier
IS Barrier
(optional)
EC
Adaptor
Sensor Cartridge
Sensor Retainer
Weatherproof Cap
Local Sensor Mounted to Transmitter
For FM compliance, the tag supplied with
XNXXSH1FM and XNXSO1FM cartridges must be
attached to the transmitter or remote mount kit.

Electrochemical Sensor Installation

CAUTION
!
Caution: A missing oxygen cell will result in 0% V/V O2 gas concentration, thus
triggering alarm events. In this situation, check the connection of the EC cell to the
sensor connector board.
Caution: For biased sensors (e.g., nitrogen dioxide) remove the sensor stabilizer from
the bottom of the sensor prior to installation.
Using the Installing plug-in sensor
procedure:
1. Verify 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. Take care to align the sensor pins
with the connector.
4. Refit the sensor retainer, tighten the locking screw with the
hex key, and refit the weatherproof cover. Countdown time
of up to 180 seconds (depending on the sensor type) will
be displayed.
5. Acknowledge the gas type (required before proceeding).
For more information on setting gas type, see the
Selection section.
6. After the sensor is installed and the gas type is confirmed,
the range, alarm levels, and other important settings must
be set; see the Configuring the Transmitter
7. After the transmitter has been configured, calibrate the
sensor following the procedures in the
43
illustration as a guide, follow this
Gas
section.
Calibration section.