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HygroPort I.S. User’s Manual
1 INTRODUCTION
The HygroPort I.S. Advanced Dewpoint Hygrometer is a portable instrument designed
for the on-line measurement of moisture content in non-corrosive gases in hazardous
locations, over an operational range of
-148 to +68°F (-100 to +20°C).
The instrument is independently assessed and certificated as being intrinsically safe and
fully compatible with safe operation for Class I, Division 1, Groups A, B, C, D and Class
1, ZONE 0.
The instrument is contained within a rugged case, sealed to NEMA4 (IP66) standard
and is powered by an internally mounted Nickel Metal Hydride (NiMH) battery
designed to typically provide 24 hours continuous use between charges. Continuous
battery charge status indication is provided. Additional battery status information
is provided by a “battery low” warning beep and indicator. The HygroPort I.S. is
equipped with an internally mounted ceramic sensor, which is enhanced for a quicker
response to dewpoints as dry as -103°F (-75°C) dewpoint.
A graphical display presents the dewpoint data in large format characters and
simultaneously provides a primary display of real time dewpoint readings and a
secondary display, in smaller characters, for the external transmitter input. If no
external input is programmed, gas temperature, measured by the internal sensor, is
displayed by default.
A fully programmable, real-time, datalogging facility is provided which has an internal
memory capacity of 8Mb, capable of storing up to 10,000 logs per file (typically giving
a maximum of 64 log files).
A Bluetooth, wireless communication system is provided, giving access to a dedicated,
PC-based HygroPort I.S. Software Application Package which provides the facility
for handling the logged data files and uploading and downloading instrument
parameters.
A user-friendly operator interface provides easy access to all levels of the instrument’s
functions.
An easy to follow calibration routine is built into the instrument’s software. The
calibration routines are described in Section 7.
Two versions of the instrument are available, a HygroPort (standard) version and
this HygroPort I.S. (intrinsically safe) version.
This manual covers the HygroPort I.S. version only.
Figure 1.1 shows the instrument.
Issue 6, December 2019 1 Kahn Instruments