Analytical Industries GPR-2000 ATEX Portable Oxygen Analyzer - Manual (Page 27)

Advanced Instruments Inc.
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Warning indicators:
An LED indicator located on the front panel will light continuously during the CHARGE cycle. A second LED indicator located on
the front panel provides a blinking 72 hour warning LOW BATT of the need to recharge the battery. Caution: Operating the
analyzer beyond this 72 hour warning may permanently damage the battery.
7 Spare Parts
Recommended spare parts for the GPR-2000 Series Portable Oxygen Analyzer:
Item No. Description
GPR-11-32-RT Oxygen Sensor
GPR-11-21-RT Oxygen Sensor
XLT-11-24-RT Oxygen Sensor
Other spare parts:
Item No. Description
A-1163 Battery Assembly (GPR-2000 only)
A-1157 Battery Assembly (GPR-2000P general purpose integral sampling pump)
A-1158 Battery Assembly (GPR-2000P intrinsically safe integral sampling pump)
FLTR-1002-1 Coalescing Filter
FLTR-1004-1 Coalescing Filter replacement element
FLTR-1001 Filter (GPR-2000P)
A-2420 Flow Through Adapter Assembly
A-2568 Housing Flow Through 1/8” SS Tube Fittings
MTR-1009 Meter Digital Panel LCD
A-1151-E-2 PCB Assembly Main / Display
PWRS-1002 Power Source Plug-in 9VDC 110V Battery Charger
PWRS-1003 Power Source Plug-in 9VDC 220V Battery Charger
A-2166-2 Pump Assembly
A-2166-4 Pump Assembly Heavy Duty
A-2166-5 Pump Assembly Intrinsically Safe Design
8 Troubleshooting
Symptom Possible Cause Recommended Action
Reading does not reflect
expected values Sensor was not calibrated at the pressure,
flow rate and temperature anticipated in the
sample gas stream Recalibrate the analyzer
Oxygen reading drifts toward
zero Indication sensor is nearing the end of its
useful life Replace sensor, see section 6 Maintenance
Slow response time
Erratic oxygen reading
No oxygen reading Liquid covering sensing membrane
Presence of interference gases
Unauthorized maintenance
Defective electrical connection
Sensor failure Gently remove with damp lint free towel.
Consult factory
Consult factory
Replace sensor and/or consult factory
High oxygen reading Inadequate control of flow rate
Abnormality in span gas
See Pressure and Flow
Qualify source