MAC155 Rev. 12 ©Copyright MAC Instruments 2005. All Rights Reserved.
Pg 4
CONDENSER
The gas stream from the water tank is fed to the condenser. The condenser
causes moisture from the gas stream to condense until the gas stream leaving
the condenser is at the required percent of moisture by volume level.
CALIBRATION VALVE
The calibration valve is normally closed when the instrument is in the “RUN”
mode. The calibration valve opens in the “CALIBRATION OR CALIBRATION
CHECK” modes to allow the reference gas to flow to the sensor.
CALIBRATION PUMP
The calibration pump starts to run when the instrument is in the
“CALIBRATION OR CALIBRATION CHECK” modes. This pump runs at twice
the speed of the sampling pump to assure that the barrel and sensor is flooded
with the reference gas.
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