Kahn Easidew, Руководство пользователя

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Easidew Transmitter User’s Manual
Kahn Instruments 9
MAINTENANCE
4 MAINTENANCE
Calibration
Routine maintenance of the Easidew is confined to regular re-calibration by exposure
of the Easidew to sample gases of known moisture content to ensure that the stated
accuracy of the Easidew is maintained. Calibration services traceable to the National
Institute of Standards and Technology (NIST) are provided by Kahn Instruments.
Kahn Instruments offers a variety of re-calibration and exchange sensor programs to
suit specific needs. A Kahn representative can provide detailed, custom advice (for Kahn
Instruments contact information go to www.kahn.com).
Sensor Guard Replacement
The sensor is supplied with a white HDPE guard (standard) or a stainless steel guard
(if specified at time or order). 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).
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Figure 11 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).
Bonded Seal
If the installed bonded seal gets damaged or lost, a pack of 5 replacement bonded seals
can be obtained by contacting Kahn Instruments, and quoting part number BS-58-PK5.