Instruction manual
Instruction 19-9326
16
Monoxor III
4.8 Operating Tips
• When an analyzer is brought in from a cold vehicle, let it warm up
slowly to minimize condensation. Temperatures below freezing will not
damage the analyzer; however, bringing a cold analyzer into a warm,
humid environment may cause condensate to form inside the case.
• If the CO channel is set up for Auto Zero (refer to Section 3.4.3), en-
sure that the analyzer is sampling fresh air when turned ON. Pulling
a ue-gas sample through the analyzer during its warm-up period will
not damage the analyzer, but it will result in incorrect CO readings.
Also note that a CO sensor error will occur if the detected CO level is
above 50 ppm during warm-up.
• Flue-gas condensate is acidic and very corrosive. It is important not to
allow the analyzer’s internal components to become soaked in conden-
sate for long periods of time.
• Before each use, inspect the lter element of the water-trap / lter as-
sembly. Replace the lter if it looks dirty.
• During a test, keep the analyzer above the water-trap, and keep the trap
in a vertical position. This will maximize the effectiveness of the trap
and keep liquid condensate from being drawn directly into the analyzer.
• When liquid condensate is seen inside the water trap, empty the trap
before it becomes full. Refer to Section 5.4.
• It is recommended that the analyzer be purged after taking a ue-gas
measurement before turning it OFF. Once the probe is removed from the
stack, disconnect the hose assembly from the bottom of the analyzer and
let the pump run for 10 minutes or so to completely remove any remain-
ing ue gases, and dry any condensate from inside the sensor chamber.
• When storing the analyzer, it’s a good idea to empty the water trap and
leave it open to further dry it out.
• Calibrate the analyzer about every 6 months to ensure its accuracy.
4.9 Resetting the Microprocessor
If the analyzer ‘locks up’ and cannot be turned OFF, reset the microproces-
sor by removing one of the batteries for 5 seconds.