Analytical Industries GPR-2500 A Oxygen Analyzer - Manual (Page 32)

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6. Unscrew the old sensor from the sensor flow housing and dispose of it according to local regulations for
batteries.
7. Remove the oxygen sensor from the bag.
8. Screw the oxygen sensor into the sensor flow housing, equipped with elbows and tubing, finger tighten plus
one half (1/2) turn to ensure a good seal from the o-ring affixed to the sensor.
9. Remove the shorting device (looped wire) from the receptacle located at the rear of the sensor. Minimize the
time the sensor is exposed to ambient air.
10. Assure the keyway registration of the female plug on the cable and male receptacle on the sensor match up.
11. Push the female plug (including the knurled lock nut) molded to the cable into the male receptacle attached to
the new sensor.
12. Screw the knurled lock nut attached the cable onto to the male connector attached to the sensor, tighten
finger tight plus ¼ turn.
13. Replace the front cover of the transmitter and ensure that the gasket is replaced as well to maintain CE
approval and NEMA 4 rating.
14. Tighten the four (4) screws to secure the front cover.
15. Connect the gas lines, vent line first, as previously described.
16. Proceed to calibration.
Remote Oxygen Sensor:
Applications requiring the sensor to be located remotely from the electronics dictate the
separate packaging and shipment of the electronics enclosure, oxygen sensor and sensor
flow housing. The appropriate length of cable to connect the sensor to the electronics is
supplied and connected to the electronics. To install the remote sensor:
1. Unscrew the knurled lock nut attached to the female plug/cable from the connector
attached to the sensor.
2. Grasp the female plug/cable and pull it from the male connector on the sensor on the
sensor to disconnect.
3. Unscrew the old sensor from the sensor flow housing and dispose of it according to
local regulations for batteries.
4. Remove the oxygen sensor from the bag.
5. Screw the oxygen sensor into the sensor flow housing, equipped with elbows and
tubing, finger tighten plus one half (1/2) turn to ensure a good seal from the o-ring
affixed to the sensor.
6. Remove the shorting device (looped wire) from the receptacle located at the rear of
the sensor. Minimize the time the sensor is exposed to ambient air.
7. Assure the keyway registration of the female plug on the cable and male receptacle
on the sensor match up.
8. Push the female plug (including the knurled lock nut) molded to the cable into the
male receptacle attached to the new sensor.