ENMET MEDAIR 2200 - Manual (Page 30)

M ED A IR 2200 ENMET Corporation
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5.5 Dew Point Sensor
Unlike the CO and O
2
sensors, the dew point sensor cannot be field calibrated. To assure correct performance, the dew
point sensor should be replaced every two years.
5.6 Flow Control Orifice / Pre-filter
A 0.005-inch diameter orifice is used to set the flow rate and to drop the air pressure. A pre-filter is in line to help
prevent clogging. In well-maintained medical air systems, this orifice should not clog. However, if difficulty is
experienced in maintaining flow rate with assured inlet pressure, remove air pressure from the equipment and examine
this orifice and pre-filter; replace it if necessary.
Orifice location will depend on instrument sensor configuration. Orifice and pre-filter are located at the output point
of the dew point probe manifold or on the inlet line to the gas sensor manifold.