Analytical Industries AII-2000 Palm O2 Oxygen Analyzer - Manual (Page 12)

6.5 Oxygen Sensor Replacement - Optional Remote Sensor
The design of the electronics is intended for only the Analytical Industries Inc.
AII-11-75-PO2 or AII-11-75-PO2R Oxygen Sensors. Use of a different oxygen
sensor may result in an erroneous oxygen reading.
NEVER - Open the oxygen sensor or probe the
sensing surface, refer to Section 10 in the event
the sensor should leak and someone comes in
contact with the electrolyte from inside the sensor.
With this configuration the integral oxygen sensor is re-
placed by a connector module (P/N A-3654). The external
oxygen sensor (P/N AII-11-75-PO2R) is connected to the
module by a cable (P/N CABL-1009) with phone plug and
locking nut attached at both ends. The cable is coiled and
extends to 6 ft.
Procedure - Optional Remote Sensor
1. Unscrew the locking nut from the connector located
at the rear of the oxygen sensor.
2. Remove the new replacement sensor from its shipping
packaging.
3. Insert the phone plug into the connector at the rear
of the oxygen sensor and finger tighten the locking nut.
4. Allow the new replacement oxygen sensor to stabilize
for approximately 30 minutes in its new environment.
5. Calibrate, see section 4.4, after replacing the remote
oxygen sensor.
20
7 Troubleshooting
If the recommended corrective action does not resolve the problem return the
device to the factory for service.
21
Symptom Corrective Action
Device appears to be physi-
cally damaged Turn device ON – if it successful passes
calibration – proceed
No display when analyzer is
turned ON Replace batteries
Check battery polarity
Check and/or clean battery contacts
‘LO’ displayed when analyzer is
turned ON or in use. Replace battery and calibrate device
‘ERR’ displayed when analyzer
fails calibration Replace oxygen sensor
No response to keypad Replace battery
Cannot turn device OFF Calibration routine in process – wait until
completed
Reading displayed by LCD
does not change when oxygen
level changes Replace sensor
Reading does not stabilize or
fluctuates erratically Relocate analyzer away source of RF or
electromagnetic radiation emissions.
Wait 5 minutes and repeat calibration
Replace sensor, repeat calibration
After calibration in 100% dry
oxygen, analyzer reading drifts
more than 2% over 8 hours Check primary oxygen delivery device
Replace sensor that is nearing the end of
its useful life