Kahn Easidew PRO XP, Руководство пользователя

Страница: 25 / 41

Easidew PRO XP User’s Manual
16 97442 Issue 2.5, January 2016
MAINTENANCE
4 MAINTENANCE
!
The power to the enclosure must be turned off before any
work is carried out in the measurement system enclosure.
Observe de-energize durations.
Gas line connections to the measurement system must be
isolated and de-pressurized before any work commences.
4.1 Calibration
Routine maintenance of the Easidew PRO XP 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 re-calibration service to suit specific needs. A Kahn
representative can provide detailed, custom advice (for Kahn Instruments’ contact
information go to www.kahn.com).
4.2 Sensor Guard Replacement
The sensor is supplied with either a stainless steel sintered or HDPE guard.
The stainless steel guard provides >80μm protection to the dew-point sensor, whereas
the HDPE protects to >10μm. 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 minimize touching the guard which
should be handled by the threaded part. Replacement guards can be obtained by
contacting Kahn Instruments (www.kahn.com) or your local distributor.
Please note the sensor tile should not be touched.
HANDLE THIS
THREADED PART
ONLY
Figure 19 Replacement of Sensor Guard