General Eastern E4-1111H-GE Data sheet

GE

Sensing

E4-1111H-GE

E4-1111H-GE is a General Eastern
product. General Eastern has joined
other GE high-technology sensing
businesses under a new name—
GE Industrial, Sensing.

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General Eastern
Chilled Mirror Dew
Point Transmitter

Applications

• Gas and liquid fueled power turbines

• Environmental test chambers

• Pharmaceutical validation chambers

• Precision HVAC monitoring and control

• Outdoor air for building enthalpy control and cooling
tower efficiency calculations

• Engine test cells and emissions testing

• Heat exchanger and refrigerant coil calorimetry

• Weather telemetry

Precision Duct Mounted Humidity
Transmitter with Integrated Chilled
Mirror Sensor

• Utilizes the time proven single stage 1111H chilled
mirror sensor

• Sensor fully recovers from condensation

• Direct primary dew point measurement. National
Institure of Standards and Technology (NIST) traceable.

• Provides linear 4 to 20 mA signal

• RS232 Interface

• Equipped with patented PACER self-cleaning and
optical balancing system

• Sensor wetted components are inert. Optional
platinum mirror for more aggressive environments.

• High accuracy: ±0.36°F (± 0.2°C) dew/frost point

• No long-term drift

• Equipped with membrane filter

• Mirror is easily accessible for manual cleaning

The model E4-1111H-GE dew point transmitter was
derived from time proven chilled mirror technology,
which is widely used for precision humidity measurement
in metrology and standards labs worldwide.

This configuration was developed to measure and control
water vapor injection into the intake of gas and liquid
fueled power turbines, however the design is applicable
to many applications where accurate and repeatable
humidity measurement is required. This technology was
chosen because power turbines require the precise
metering of water vapor injection into the combustion
chamber to reduce pollutant emissions. Water vapor is
also added to the intake of the turbine to increase the
mass flow which in turn increases electrical power
output. The Model E4-1111H-GE is a laboratory grade
chilled mirror hygrometer, designed to meet the
requirements of industrial applications.

The transmitter is suitable for operation in a wide range
of environmental conditions, including outdoor air. The
sensor fully recovers from condensation and exhibits
negligible long-term drift. The electronic components
used are of the highest industrial quality. Each unit is
calibrated to NIST traceable reference standards and the
E4-1111H-GE is suitable for use as a dew point transfer
standard. For more information on the theory and
operation of General Eastern’s Chilled Mirror
Hygrometers, contact us to obtain a catalog and
application assistance.

GE

Sensing