General Eastern MMY245 Data sheet

GE

Sensing

Features

The DewPro MMY245 moisture analyzer is a convenient,
portable instrument that can quickly spot check the
performance of gas dryers for compressed air, breathing
air, SF6 gas used in in power switches, and pure gas
supplies. The planar capacitive sensor combines
accurate dew point measurement with fast response
time. The sensor is stored in a very dry environment
within the analyzer between measurements, which
speeds response time.

The DewPro MMY245 can be configured according to the
desired moisture unit of measure, temperature unit of
measure, or other operating parameters. An optional
pressure sensor provides real-time correction for
concentration units of measure or a pressure constant
for use with stable pressure measurements. Voltage
output 0 to 5 VDC is standard.

The DewPro MMY245 can serve as field validator for
DewPro MMY transmitters.

DewPro MMY245 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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• Convenient, portable analyzer measures dew point
within gases

• Planar capacitive sensor stored within desiccant
chamber for fastest response

• Simple to switch sampling between dry storage
environment and process stream

• Pressure dew point measurement range of

-148°F to 68°F (-100°C to 20°C)

• User-selectable moisture measurement units

• Fully portable_powered by four common “D” batteries
with automatic shut-off feature

• Two non-Intrinsically safe voltage outputs

• Optional pressure sensor

DewPro

®

MMY245

Moisture Analyzer

GE

Sensing

DewPro MMY245
Specifications

©2006 GE. All rights reserved.
920-067A

All specifications are subject to change for product improvement without notice.
DewPro®is a registered trademark of GE. GE®is a registered trademark of General
Electric Co.

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www.gesensing.com

Operating Voltage

Battery powered_4 x “D” cells

External Dimensions Enclosure (l x w x d)

11 in x 8.17 in x 7.09 in (274 mm x 208 mm x 180 mm)

Weight

<7 lb (3.2 kg), including 4 common “D” size batteries

Display

Large, four-digit LCD display with rate of change bar
graph indicator. Low battery indicator.

Enclosure

Impact-resistant plastic enclosure

Sensor

Planar, temperature compensated

Measurement Range

-148°F to 68°F (-100°C to 20°C) dew point temperature

Accuracy

±3.6°F (±2.0°C) dew point temperature at 77°F (25°C)

Readout Units Of Measure

Dew point °F or °C, ppmv, lb/MMSCF, g/m3, g/kg, %RH

Secondary Readout Units Of Measure

Temperature °F or °C, pressure psig**, pressure psia**,
pressure bar**, arbitrary scaled input voltage, plus all
primary units of measure

**With optional pressure transducer

Maximum Pressure Rating

150 psig (10 bar)

Operating and Storage Temperature

-4°F to 122°F (-20°C to 50°C)

Resolution

0.1°C dew point temperature

Calibration

Factory recalibration recommended every six to 12
months depending on use or every three months if used
for one point or two point connection of the MMY30 or
MMY31 transmitters.

7.09 in

(180 mm)

8.17 in

(208 mm)

10.78 in

(274 mm)

1/8 in NPT

DewPro MMY245 dimensions