AMI Analyzer Manual
Model 111/111P Oxygen Analyzer
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reduce the battery voltage and thus turn the pump off – in this case both the red and blue LED’s will come
on while the pump is running.
Safety:
A component of the sensor operates internally at a high temperature and will ignite any flammable gas
mixture it sees.
Do not use this analyzer with flammable gases of any kind
. (Note, the analyzer itself runs
at ambient temperature).
Oxygen sensor:
The Model 111’s Zirconium oxide sensor produces an output current in proportion to the amount of oxygen
present, and has virtually zero output in the absence of oxygen, thus avoiding any requirement to zero the
analyzer. The span calibration may be performed using a standard span gas or oil-free compressed air. The
sensor is so stable that span calibrations are only necessary once or twice a year. Unlike conventional
sensors, the sensor does not age when it is not powered.
WARNING
All zirconium oxide sensors operate at high temperature, and are unsuitable for
measuring flammable gases. Any hydrocarbon gas will oxidize on the sensor, reducing
the oxygen reading by the amount of oxygen required to burn the hydrocarbons.
DO
NOT USE THIS ANALYZER WITH FLAMMABLE OR EXPLOSIVE SAMPLES!
Sensor Warranty:
The sensor is warranted to operate for at least two years, with an expected life between five and ten years.
Instrument Warranty:
Any failure of material or workmanship will be repaired free of charge for a period of two years from the
original purchase (shipping date) of the instrument. AMI will also pay for one way shipment (back to the
user).
Any indication of abuse or tampering will void the warranty.
