Analytical Industries GPR-1500 A Series Trace PPM Oxygen Analyzer - Manual (Page 6)

Advanced Instruments, Inc
6
Maintenance
Serviceability: Except for replacing the oxygen sensor, there are no parts inside the transmitter for the
operator to service.
Only trained personnel with the authorization of their supervisor should conduct maintenance.
Oxygen Sensor: DO NOT open the 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 of in accordance with local
regulations.
Troubleshooting: Consult the guidelines in Section 8 for advice on the common operating errors before
concluding that your transmitter is faulty. Do not attempt to service the transmitter beyond those means
described in this Owner’s Manual.
Do not attempt to make repairs by yourself as this will void the warranty as per Section 10 and may result in
electrical shock, injury or damage. All other servicing should be referred to qualified service personnel.
Cleaning: The transmitter should be cleaned only as recommended by the manufacturer. Wipe off dust and
dirt from the outside of the unit with a soft damp cloth then dry immediately. Do not use solvents or
chemicals.
Nonuse Periods: If the transmitter is equipped with a range switch advance the switch to the OFF position
and disconnect the power when the transmitter is left unused for a long period of time.
Installation
This analyzer has been constructed in compliance with
EN 60079-0 : 2006
EN 60079-1 : 2004
Gas Sample Stream: Ensure the gas stream composition of the application is consistent with the
specifications and if in doubt, review the application and consult the factory before initiating the installation.
Note: In natural gas applications such as extraction and transmission, a low voltage current is applied to the
pipeline itself to inhibit corrosion of the pipeline. As a result, electronic devices connected to the pipeline can
be affected unless they are adequately grounded.
Contaminant Gases: A gas scrubber and flow indicator with integral metering valve are required upstream
of the analyzer to remove any interfering gases such as oxides of sulfur and nitrogen or hydrogen sulfide
that can interfere with measurement and cause reduction in the expected life of the sensor. Consult the
factory for recommendations concerning the proper selection and installation of components.
Expected Sensor Life: With reference to the publish specification located at the last page of this manual,
the expected life of all oxygen sensors is predicated on oxygen concentration (< 1000 PPM for PPM sensor
or air for % sensor), temperature (77°F/25°C) and pressure (1 atmosphere) in “normal” applications.
Deviations from standard conditions will affect the life of the sensor. As a rule of thumb sensor life is
inversely proportional to changes in the pressure and temperature.
Accuracy & Calibration: Refer to section 5 Operation.