General Eastern MMY2650 Data sheet

GE

Measurement & Control Solutions

HygroGuard MMY2650

General Eastern
Trace Moisture Analyzer

Features

• Optional analog input for pressure compensation
or analog transmitter (voltage or current)

• One, two or three analog outputs; 0/4 to 20 mA or
0/1 to 5 VDC

• Three congurable relay outputs plus system
alarm relay

• Two line LCD and ve push button user interface

• RS485 serial output

• Full complement of pre-programmed moisture
measurement units

The HygroGuard MMY2650 is a moisture analyzer
designed to operate with the GE DY5 or DY55
planar gold aluminum oxide dew point sensor. The
unit oers an optional input that can be used for
pressure compensation, an external temperature
probe, or other analog transmitter. The standard
product comes with one current output (0/4 to
20 mA), a system alarm relay, and three adjustable
relays, all with single-pole double-throw 2.5 A
contacts, selectable failsafe mode, and adjustable
hysteresis. One or two additional analog outputs are

available. A display and ve push buttons from the
user interface for data display, unit selection, output
ranges, alarm setpoints and special functions.

The HygroGuard MMY2650 is available in both wall
mount and panel mount congurations. When used
with the DY5 dew point probe, the system is capable
of providing dew point readings in the range of

-112°F to 68°F (-80°C to 20°C) dew point over a
temperature range of -4°F to 140°F (-20°C to 60°C).
When congured with approved Zener Barriers the
model DY5xx probe is approved as intrinsically safe
for use in hazardous (classied) locations.

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MMY2650 Specications

Standard Inputs

Two (moisture and temperature) from DY5 probe,
connects up to two DY55 probes.

Optional Input

For pressure transducer providing live pressure
compensation or monitoring one other analog
transmitter. Signals: 0/1 to 5 V, 0/4 to 20 mA loop
powered, or 4 to 20 mA/source.

Moisture Probe

Interconnects with DY5 probe (US) or DY55 (European)
probe

User Interface

Five push-buttons, easy conguration using a matrix

Display

Alphanumeric LCD displays measured value with units
of measure, matrix location programming instructions,
error indication and error codes; user selectable
scanning feature alternating the display every ve
seconds through active channels (three maximum)

European Compliance

Complies with EMC directive 2004/108/EC and
LVD 2006/95/EC

Digital Outputs

Four relays (SPDT dry contacts rated at 250 VAC, 2.5 A,
PCAC = 300 VA, cos phi > 0.7, PDC 100 W, 100 VDC). One
relay is system alarm. Three relays are congurable to any
input; failsafe mode: energized/de-energized selectable.
programmable hysteresis; high/low alarm selectable

Serial Output

RS485, streaming data, update rate once per second

Program

Non-volatile memory

Units Of Measure (Moisture)

Dew point °C, °F, ppmv (requires pressure measurement
or programmed constant), lb/MMSCF, g/m3, g/kg,
vapor pressure in hPa, or mmHg, %RH, process
pressure calculated dew point °C, °F (needs pressure
measurement using the optional input for live calculation
or pressure constant)

Units of Measure (DewPoint)

°F, °C, instrument range -202°F to 86°F (-130°C to 30°C)

Units of Measure (Pressure)

Optional input used with a pressure transducer to
selected unit; bara, barg, psia, psig, hPaa, hPag

Analog Outputs

Three, assigned to input 1, 2 and 3, 0/4 to 20 mA, load
resistance <500 ohms, 0/1 to 5 V, source resistance
249 ohms, user selectable range, user selectable
condition in case of error to 110%, -10% or hold at last
measured value

Data

EEPROM

Operating/Storage Temperature

14°F to 122°F (-10°C to 50°C)

Supply Voltage

90 to 240 VAC, optional 18 to 36 VDC

Power Consumption

5.8 VA for line voltage units, 2.2 W for DC powered units

Enclosures

Wall Mount: Type 12, Type 4X, Type 7, and Panel Mount.

Cable Entry

Metric cable gland M12, 2x M16, M20

Weight

2.2 lb (1 kg)