Bacharach MGS-550 Specifications

REFRIGERANT SAFETY COMPLIANCE

MGS-550 Refrigerant Gas Detector

For Industrial Applications

5 Digit

LED Display

Dual Sensor Capability

DESCRIPTION

Bacharach’s MGS-550 leak detector combines electrochemical, semiconductor, catalytic
bead and infrared sensors into one platform to support leak detection for the new low
GWP (Global Warming Potential) refrigerant blends as well as natural refrigerants to
enable gas leak detection in the often harsh environments of industrial refrigeration.

The MGS-550 can easily be integrated into any building management system (BMS).

The Modbus RTU interface allows the user to program and congure the unit remotely

through the BMS. Remote access gives complete control to the user when using Modbus.
Alternatively, electrical current or volt analog output provides an industry standard
reading using 4-20mA.

Having three integrated relays within each instrument reduces the need for having to
wire alarm devices back to a central control system. Because of the integrated relays,
the Bacharach MGS-550 can be operated as a stand-alone system. Each relay can
be individually programmed to trigger alarm devices and actions separately or as a
redundant system.

The straightforward menu structure is identical regardless of the type of sensors used,
reducing the costs and amount of time for training required upon installation or during
maintenance.

Bacharach’s MGS-550 oers the exibility of adding a second sensor at any point in time

without the need for any additional controllers. Any sensor can be remotely mounted
from the main instrument to a distance of 5 meters or 15 feet. It meets the requirements
of EN 378 and ASHRAE 15.

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FEATURES BENEFITS

One or two sensor capabilit y Detects two gases and/or in t wo locations with one

instrument

Remote sensor capabilities Flexible placement in hard to reach areas

Analog and digital interface Ease of integration with multiple control devices

On-board relays Connects to local alarm devices for saving costs on installation

Magnetic wand Non-intrusive conguration and calibration

Status indicator and LED
display

Optional MGS-408 Controller Create an independent, centralised alarm system with up to 6

Provides at-a-glance status overview and comprehensive
direct user interface

gas detectors

FOR MORE INFO:

Scan the QR code to learn
more about the MGS-550 and
other Bacharach products.

REFRIGERATION INDUSTRIAL

SPECIFICATIONS DESCRIPTION

Gases and Range Refrigerants 1,000 / 10,000 ppm

CO

2

NH

* 100** / 1,000** / 5,000** / 10,000 ppm / 100% LEL

3

O

2

CO** 500 / 1,000 ppm

Combustible Gases 5,000 ppm / 100% LEL

C

2H4

NO

*** 20 ppm

2

Repeatability ±5% of applied gas concentration

Display Red 5-digit, 7-segmented LED and green status LEDs

Output Analog 4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V, 2 to 10 V

Digital Modbus RTU via RS 485

Power Supply 19.5 to 28.5 VDC or 24 VAC ±20%; 3- or 4-wire

Relay Three relays, SPDT, user assignable

Enclosure General purpose ABS IP66 with four M20 × 1.5 cable glands

Size (W×H×D) Approx General purpose 8.3” x 8.9” x 3.4” / 210 × 225 × 85 mm

Weight Approx GP: 2 lbs / 1 kg; XP: 3.5 lbs / 1.6 kg

Approvals CE, UL / CSA / IEC EN 61010-1

Ambient Conditions Temperature Semiconductor -40 to 122°F / -40 to +50°C

Humidity 5 to 90 % RH, non condensing

Pressure 23.6 to 32.5 inch Hg / 800 to 1,100 mbar

5,000 / 10,000 / 20,000 / 30,000 / 40,000 / 50,000 ppm

30Vol%

2,000 ppm

Rating 2 A @ 30 VDC NO, 0.5 A @ 125 VDC, 0.25 A @ 250 VAC, 30 W, resistive
load

Electrochemical -5 to 122°F / -20 to + 50°C*

Infrared -40 to 122°F / -40 to +50°C

Catalytic Bead -40 to 122°F / -40 to +50°C

MKTG 00012 | Rev 3 | Marketing Communication s | Subje ct to mo dic ations | © Bacharach Inc

* NH3 available as low temperature version -40°F / 40°C (not for 5,000 ppm Elec trochemical sensor)
** IP66 rated; not available in XP enclosure
*** Not IP66 rated; not available in XP enclosure
For ordering information, visit us at www.mybacharach.com or contact your Bacharach regional sales manager.

New Kensington, PA USA | Dublin, Ireland | Toronto, Canada
mybacharach.com | [e-mail]