GE Sensing HygroPro Data sheet

GE

Oil & Gas

HygroPro

Aluminum Oxide
Moisture Transmitter

Applications

This aluminum oxide moisture transmitter
measures moisture concentration in gases and
non-aqueous liquids from trace to ambient levels.
It is suitable for a wide range of industries:

• Petrochemical

• Natural gas

• Industrial gas

• Semiconductor

• Furnace gas/heat treating

• Power generation

• Air dryer

• Pharmaceutical

• Aerospace

Features

• Intrinsically safe

• Ambient to ppb moisture measurement; using
aluminum oxide moisture sensor

• Built-in temperature and pressure sensors

• Non-volatile calibration data storage

• Calibrations traceable to National Institute of
Standards and Technology (NIST)

• Requires only twisted pair cabling

• Complete program capability via six-button
keypad

• Integrated display/user interface

• Analog and digital outputs

The HygroPro moisture transmitter is an intrinsically
safe, compact, loop-powered moisture transmitter
designed specifi cally to meet the demands of rugged
industrial applications. With certifi ed intrinsically safe
electronics (when installed with proper protection)
packaged in an IP67/Type 4X housing, the HygroPro
is ideal for use in pipeline natural gas, petrochemical,
power generation and other industrial gas or
non-aqueous liquid applications.

The HygroPro features an integrated backlit display
and six-button keypad to provide viewing of up to
three parameters simultaneously and to allow easy
navigation of the software for confi guration of the
display, analog and digital (RS485) outputs, and other
user functions and diagnostics. Via the RS485 interface,
the HygroPro built-in multidrop capability allow multiple
units to be connected on a single network.

Using an industry-proven aluminum oxide moisture
sensor, the HygroPro features a built-in temperature
thermistor and pressure transducer to provide
realtime measurement for calculation of parameters
such as ppm

in gases, ppmw in liquids, pounds per

v

million standard cubic feet in natural gas or percent
relative humidity. Three sensors mounted on a single
probe mount provide installation fl exibility when
space is limited. In addition, the HygroPro display
can be oriented in four different orientations to allow
installation of the moisture sensor in the top, bottom or
side of a process pipe or sample cell.

Advanced Moisture Sensor Technology

The HygroPro combines a technologically advanced
aluminum oxide moisture sensor with state-of-the­art software and electronics for unequaled overall
performance.

NIST-Traceable Calibration

Superior sensitivity, speed of response, calibration
stability, and wide dynamic range have made GE
aluminum oxide moisture probes the standard
of performance and value in industrial moisture
measurement. They are suitable for laboratory and
industrial moisture measurement applications in gases
and non-aqueous liquids over a wide range of process
conditions.

All moisture probe calibrations are traceable to the NIST.

The rugged, compact HygroPro transmitter is designed
specifi cally for installations where space is at a
premium. It can be installed directly in the process
stream or, if necessary, in a sample system. If required,
GE can design and build a sample conditioning system
to meet unique application demands.

HygroPro

™

The HygroPro consists of a display/keypad housing, and
a replacement transducer element (RTE), which contains
the aluminum oxide moisture sensor, temperature
thermistor, and pressure transducer and associated
electronics. The RTE is fi eld replaceable by simply
removing a small mounting plate and disconnecting a
cable. Also, since the calibration data for the moisture
and pressure sensors are stored in a non-volatile
EEPROM in the RTE, a user does not need to enter any
calibration data manually when changing an RTE.

+

12 to 30 VDC

Power and Digital
Measurement
Circuits

Standard Analog Output Connection

Ground

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