General Eastern Dew-10 Specifications

Features

• Primary dew point measurement

• High accuracy

• Wide operating range

• No drift

• No hysteresis

• Direct dew point and temperature signals

GE

Sensing

Dew-10

Dew-10 is a General Eastern
product. General Eastern has
joined other GE high-technology
sensing businesses under a new
name—GE Industrial, Sensing.

g

General Eastern
Chilled Mirror Dew
Point Transmitter

Applications

• Precision HVAC/BAS

• Clean rooms

• Museums

• Film storage

• Pharmaceutical

Primary Dew Point Measurement with
4 to 20 mA or PRTD Output

The Dew-10 series is a family of cost effective chilled
mirror dew point transmitters comprising of wall, duct
and pipe mounted models. These instruments provide
accurate and reliable dew point measurements over a
wide range for building automation, mission critical
environments and clean industrial applications.

Dew-10s provide accuracy of ±1ºF (±0.5ºC) over a range of

-40ºF to 136ºF (-40ºC to 58ºC) dew point. The range is
dependent on the ambient temperature. At 77°F (25°C) the
units provide approximately 72°F (40°C) depression. The
wall mount version is also available with an air temperature
measurement capability over the same range.

The Dew-10 measures dew point by utilizing a solid state
heat pump to cool a metallic mirror. When the mirror
temperature reaches the dew point of the surrounding
air, a thin dew layer condenses on the mirror surface. The
condensation is optically detected. A feedback loop keeps

the mirror at the exact dew point by continuously
controlling the mirror temperature. A precision PRTD
(Platinum Resistance Temperature Detector) is embedded
just beneath the surface of the mirror, allowing the dew
point temperature to be precisely measured.

Maintenance is straight-forward. Filter replacement and
cleaning the mirror with a cotton swab restores the
transmitter to its original condition. Since the wetted
components are inert and the RTD is hermetically sealed,
Dew-10s provides many years of drift-free
measurement.

Each transmitter is calibrated to National Institute of
Standards and Technology (NIST) traceable reference
standards. A certificate of conformance with functional
test data is supplied. Our manufacturing and quality
system certified to ISO-9001 standards and Six-Sigma
methodology is applied.

Contact our applications engineers to discuss your
precision humidity measurement requirements.

GE

Sensing