Introduction - Michell Instruments Easidew Portable HP User Manual

Easidew Portable HP User's Manual
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INTRODUCTION

The Easidew Portable comprises an Easidew sensor fitted into a sample block with an
integrated filter cartridge, and Swagelok
The measured dew point from the sensor is shown on the clear red LED display on the
front panel of the instrument.
The Easidew Portable can be supplied with either °C or °F dew-point measurement
units.
A 4-20 mA analog output is provided for connection to a chart recorder, data-logger or
computer system, so dew-point trends can be analyzed over time.
The electronics are housed in a rugged Peli case, providing NEMA 6 protection when the
lid is closed. The case is supplied with a lifetime guarantee.
The Easidew Portable is powered by a rechargeable NiMH battery pack, giving between
12 and 16 hours of measurement time from a full charge. The instrument is delivered
complete with a universal battery charger stored in the lid. It takes 16 hours to fully
charge the battery pack, during which time the instrument can be switched on or
off. The charger is suitable to connect power to the instrument indefinitely, but it is
recommended to allow the battery pack to go through a full charge-discharge cycle at
least once per month.
All Michell Ceramic Moisture Sensors are subject to a 13-point calibration, where their
performance is characterized against a fundamental reference hygrometer. This process,
and subsequent quality testing, ensures that all sensors behave optimally before they
are used in the field. A calibration certificate traceable to UK National Physical Laboratory
(NPL) and the US National Institute of Standards and Technology (NIST) is provided
from Michell Instruments' accredited laboratory. The certificate shows 7 points of the
13-point calibration.
Michell Instruments
tube couplings on the gas inlet and outlet.
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INTRODUCTION
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