GE Sensing MMR30 Specifications

GE

Sensing

Features

DewPro

®

MMR30

Moisture Transmitter

The DewPro MMR30 is a compact, mid-range moisture
transmitter designed specifically for refrigeration dryer
manufacturers and users. The DewPro MMR30 measures
dew point at line pressure or atmospheric pressure and
installs easily on a dryer outlet header.

The DewPro MMR30 uses a proven polymer capacitive
sensor to provide a measurement range of 5°F to 185°F
(-15°C to 85°C) with ±1.8°F (±1.0°C) accuracy. The
optional integrated display with user interface provides
full programming and diagnostic capability.

DewPro MMR30 is a General Eastern
product. General Eastern has joined
other GE high-technology sensing
businesses under a new name

_

GE Industrial, Sensing.

g

• Loop-powered, 4 to 20 mA transmitter

• Proven polymer capacitive sensor for fast response
and calibration stability

• Integral filtering and flow regulation

• Trouble-free indoor or outdoor mounting

• Microcontroller electronics in Type 4X/IP67 enclosure

Options

• Integral display with user interface

• English or metric fittings

• External display available with loop-powered supply
and alarm contacts

• Power supply

• Wall mount kit

GE

Sensing

©2005 GE. All rights reserved.
920-062B

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.

DewPro MMR30
Specifications

g

www.gesensing.com

Sensing Element

Silicon-based polymer, capacitance principle,
IC electronics

Dew Point Range

5°F to 185°F (-15°C to 85°C)

Dew Point Accuracy

±1.8°F (±1°C) above 32°F (0°C) dew point @ 25°C

Operating Temperature Range

Process: 5°F to 185°F (-15°C to 85°C)
Electronics: -40°F to 185°F (-40°C to 85°C)

Maximum Operating Pressure

250 psia (17 bar)
Inlet filter: 2 micron sintered stainless steel

Air Bleed Off at 100 psig (7 bar)

Approximately 1 SCHF (28 sl/h)

Output

Loop current 4 to 20 mA; 16 :A resolution

Flow Block

316 stainless steel with 1/2 in NPT-M or G 1/2 thread;
(DIN ISO 228) and gasket seal

Wrench Width for Flow Block

1-5/8 in (42 mm)

Electronics

Microcontroller operated

Hardware Selectabel Units

Dew point temperature in °F or °C

Supply Power

24 VDC nominal, tolerance 12 to 30 VDC

Optional Display

Four-digit numeric display with bar graph and matrix
position indication. Four user interface keys for unit
selections, output adjustments and ranging.

Protection

Type 4X/IP67

Weight

4.4 lb (2 kg)

European Compliance

Complies with EMC Directive 89/336/EEC and
PED 97/23/EC for DN<25

6.78 in

(172.2 mm)

3.28 in

(83.2 mm)

Epoxy-coated
cast
aluminum
housing that
meets
Type 4X/IP67
requirements

M20 or
1/2 in
NPT
conduit
or
cable
gland

1/2 in NPT-M or
G 1/2 inlet
process
connection

5.44 in

(138.0 mm)

3.11 in

(79.0 mm)

DewPro MMR30 with optional display