Kahn Easidew I.S., Руководство пользователя

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Easidew I.S. User’s Manual
Kahn Instruments 11
MAINTENANCE
4 MAINTENANCE
Calibration
Routine maintenance of the Easidew I.S. is confined to regular re-calibration by exposure
of the transmitter to sample gases of known moisture content to insure that the stated
accuracy is maintained. Calibration services traceable to the US
National Institute of
Standards and Technology (NIST) are provided by Kahn Instruments.
Kahn Instruments offers a variety of re-calibration and service exchange schemes to
suit specific needs. A Kahn representative can provide detailed, custom advice (refer to
www.kahn.com for details of Kahn Instruments’ contact information).
The following procedure must be carried out by a qualified
installation engineer.
Sensor Guard Replacement
The sensor is supplied with either a white HDPE or a stainless steel guard. The method
of replacement is the same for both types.
HDPE Guard
The HDPE guard provides <10μm protection to the dew-point sensor. It is designed
to show any contamination and the guard should be changed if the surface becomes
discolored.
When replacing the guard, care should be taken to handle the guard by the bottom part
only. Replacement guards (EA2-HDPE) - pack of 10 - can be obtained by contacting
Kahn Instruments (www.kahn.com) or your local distributor.
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Figure 17
Replacement of HDPE Guard
Stainless Steel Guard
The stainless steel guard provides <80μm protection to the dew-point sensor. It is
designed to show any contamination and the guard should be changed if the surface
becomes discolored.
When replacing the guard, care should be taken to handle the guard by the bottom
part only. A replacement guard (SSG) can be obtained by contacting Kahn Instruments
(www.kahn.com).