Analytical Industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter - Manual (Page 19)

Advanced Instruments, Inc
19
Installing the Oxygen Sensor
The GPR-1800IS Oxygen Transmitter is equipped with a SS sensor housing. This housing offers ease of
replacement of sensor and at the same time prevents any air leakage into the system. The two sections of
the sensor are held together by a metal clamp secured in place by easily accessed bolt. The integrity of the
sensor housing has been tested at the factory prior to shipment and is fully operational from the shipping
container.
Caution: All transmitters must be calibrated once the installation has been completed and
periodically thereafter as described below. Following the initial installation and calibration, allow the
transmitters to stabilize for 12-24 hours and re-calibrate the transmitter with a certified span gas.
Caution: DO NOT dissect the oxygen sensor. The sensor contains a corrosive liquid electrolyte
that could be harmful if touched or ingested, refer to the Material Safety Data Sheet contained in
the Owner’s Manual appendix. Avoid contact with any liquid or crystal type powder in or around the
sensor or sensor housing, as either could be a form of electrolyte. Leaking sensors should be
disposed off in a manner similar to that of a common battery in accordance with local regulations.
Avoid electrostatic discharge – Clean all surfaces with a damp cloth only.
Procedure:
Remove the two (2) clamps securing the right side corners and
open the door of the fiber glass enclosure.
Loosen the bolt at the bottom of the sensor housing by using 5/16
ranch provided.
Twist the upper section of the housing 90 degree and pull it up
until it clears the bottom section of the sensor housing.
Remove the old sensor (if previously installed) from the sensor
housing
Remove the oxygen sensor from the bag and remove the two red
shorting taps from the two ring gold color contact plate of the
sensor.
Insert the sensor into the upper section of the sensor housing with
gold contact plate facing towards two gold contact pins of the
sensor housing
By holding the sensor and the upper section of the sensor housing
in your hand, allow 2-3 minutes for the analyzer to respond to the
new sensor. The analyzer should display oxygen around 21% with
factory default span setting (see below)
You may perform a quick air calibration to ensure that the analyzer
accepts the air calibration confirming that the sensor out put is within the recommended limits.
Place the sensor in the bottom section of the sensor housing with the two ring gold contact plate facing up.
Place the upper section of the sensor housing over the sensor. Slightly push it down and twist 90 degree.
By using the 5/16 ranch, tighten the bolt securing the two section together.