Bacharach MGS-150 Installation Guide

GAS DETECTOR

INSTALLATION GUIDE

P/N: 6309-9002

Revision 1

October 2016

IP66

Housing

Standard

Sensor

Housing

2: SAFETY INSTRUCTIONS

USER MANUAL: Before using this equipment,

carefully read and strictly follow the User Manual
(part number 6309-9000). The user must fully

understand and strictly observe the instrucons.
Use the equipment only for the purposes listed and
under the condions specified in those documents.

CODE COMPLIANCE: Comply with all local and
naonal laws, rules and regulaons associated with
this equipment.

GENUINE PARTS: Use only genuine Bacharach spare
parts and accessories, otherwise proper funconing
of the equipment may be impaired.

TECHNICIAN USE ONLY: This unit must be installed
by a suitably qualified technician who will install this
unit in accordance with these instrucons and the
standards in their parcular industry/country. Opera­tors of the unit should be aware of the regulaons
and standards in their industry/country for the
operaon of this unit. These notes are only intended
as a guide and the manufacturer bears no responsi­bility for the installaon or operaon of this unit.

Failure to install and operate the unit in accordance
with these instrucons and with industry guidelines
may cause serious injury including death and the
manufacturer will not be held responsible in this
regard.

SAFE MOUNTING: This monitor must be connected
by a marked, suitably located and easily reached
switch or circuit-breaker as means of disconnecon.

3: WEIGHTS AND DIMENSIONS

4: MOUNTING

ENVIRONMENTAL CONSIDERATIONS: Careful-

ly consider the full range of environmental
condions to which the instruments will be
exposed.

TARGET GAS CONSIDERATIONS: The physical
data of the gas or vapor to be detected must
be observed.

APPLICATION CONSIDERATIONS: The specifics
of the applicaon (for example, possible leaks,
air movement/dra, etc.) must be observed.

ACCESSIBILITY CONSIDERATIONS: The degree
of accessibility required for maintenance
purposes must be granted.

ACCESSORY CONSIDERATIONS: The types of
oponal and accessory equipment that will be
used with the system must be kept in mind.

ELECTRONIC CONSIDERATIONS: The system
contains sensive electronic components that
can be easily damaged. Do not touch nor
disturb any of these components.

Mount the MGS-150 according to the above
consideraons, product dimensions (see
Secon 3), maximum wiring lengths (see
Secon 5), and the corresponding mounng
dimensions shown in the illustraons that
follow.

0.28 in

(7.0 mm)

4.07 in (103.50 mm)

0.31 in

(8.0 mm)

1.69 in (43.0 mm)

�

018 in

(4.50 mm)

1.0 in

(25.00 mm)

5.8 in (147 mm)

0.3 in (8 mm)

3.39 in (86.0 mm)

1.4 in

(36.00 mm)

Ex d Housing

�

0.18 in

(4.50 mm)

�

0.35 in

(9.0 mm)

1.0 in

(25.00 mm)

Standard
Housing

2.09 in (53 mm)

4.72 in (120 mm)

CAUTION: DO NOT MOUNT the
MGS-150 in an area that may contain
flammable liquids or vapors. Opera­on of electrical equipment in such
an area constutes a safety hazard.

WARNING: Strictly follow the instruc­ons in the Gas Detector Manual (part
number 6309-9000) available at
www.MyBacharach.com.

1: OPERATING AREA AND CONDITIONS

The Bacharach MGS-150 is an instrument for the

connuous monitoring of refrigerant, combusble,
and toxic gases.

The instrument is powered by 12-24V AC or DC (select­able by an on-board jumper). The output signal can be
selected as either voltage or current. The on-board
relay can be used to switch alarm devices.

Type/Enclosure Dimensions Weights

IP41

IP66

IP66 w/ Splash
Guard

IP66 w/ Remote
Sensor

IP66 w/ Ex d
Remote Head

IP66 w/ PRV
Sensor Head

IP66 Airflow/
Duct (See Table)

Ex d (Enclosure)

3.35” x 5.59” x 2.09”
86 x 142 x 53 mm

6.89” x 6.5” x 3.29”
175 x 165 x 82 mm

6.89” x 8.9” x 3.29”
175 x 225 x 82 mm

6.89” x 6.1” x 3.29”
175 x 155 x 82 mm

6.89” x 6.1” x 3.29”
175 x 155 x 82 mm

6.89” x 6.1” x 3.29”
175 x 155 x 82 mm

6.89” x 4.9” x 3.29”
175 x 125 x 82 mm

5.8” x 7.1” x 5.0”
147 x 180 x 128 mm

6.3 oz
180 g

1 lb 6 oz
629 g

1 lb 9 oz
700 g

1 lb 11 oz
790 g

2 lb 10 oz
1185 g

2 lb 0.3 oz
916 g

1 lb 4 oz
578 g

4 lb 10 oz
2100 g

Supported CFM & Duct Sizes for Duct Mount Housing

Units

Inches

Feet

Area (ft2)

12 x 12 12 x 24 18 x 18 24 x 24 24 round

1 x 1

1 2 2.25 4 3.14

Duct Size

1 x 2 1.5 x 1.5 2 x 2 Pi x 1 x 1

IP66 Housing

4.8 in

(122 mm)

4.8 in
(123 mm)

1.7 in

(42 mm)

mounng slots =

0.35 in (9mm) long x

4.0 in

0.24 in (6mm) wide

(101 mm)

Use 3/16-inch screws
(5mm - 6mm )

2.3 in

(59 mm)

5.7 in

(146 mm)

5.7 in
(144 mm)

6.3 in (160 mm)

M42 thread

2.8 in (70 mm)

Exd Remote

Head

Thread varies

with model

7.1 in (180 mm)

5.0 in (128 mm)

PRV/IP66
Vent Pipe

Monitoring 1

in BSP Head

1”BSP thread

Semiconductor

Sensors Only

5: WIRING AND CONFIGURATION

Electrochemical (EC) or Infrared (IR) Sensor

CABLE OPENINGS: Each MGS-150 IP41 transmier
will have a single opening for a PG7 cable gland, as
well as an oponal knockout opening. Each
MGS-150 IP66 tranmier has 3 openings These
openings can be used for field wiring, direct aach­ment of a sensor or wiring of a remote sensor.
Unused openings must be closed with a suitable
plug and gasket, maintaining the IP or Ex d rang.

NOTE: To make wiring connecons,
you must first open the MGS-150
housing. The enclosure lid of the IP66
housing has four capve screws.

Refer to the User Manual (part number
6309-9000) at www.MyBacharach.com for detailed

instrucons on accessing the internal components
for wiring.

NOTE: For AC-powered configura­ons, ensure that the AC neutral
supply line is not used as the ground
reference for the analog outputs.

NOTE: Aer wiring is completed,
carefully re-assemble the enclosure
and its components, nong the
keyed ribbon cable and sensor
connectors. Aer installaon is
complete, be sure to refer to the

User Manual (part number
6309-9000) at www.MyBacharac­h.com for detailed instrucons on

registering the sensors and config­uring the MGS-150 for proper
operaon.

IMPORTANT CONFIGURATION
NOTE: For detecon of R449A or

R450A, the maximum linear range
of 500 ppm equals 50% of the
range of the analog output (e.g.,
500 ppm = 12 mA, when using
4-20mA output). Data above this
range should be discarded as
invalid. The alarm set point must
not be adjusted higher than 500
ppm for these gases.

Adjust Span
(Adjust Zero in
IR Model)

Adjust Zero
(Adjust Span in
IR Model)

Adjust Audible
Alarm and Relay
Set Point (P1)

CN1

12-24

VAC

0V V+

12-24 VDC

Audible Alarm and Relay
Set Point Voltage

0 V

Adjust Span
Adjust Zero

Adjust Audible
Alarm and Relay
Set Point (P1)

CN1

SW1

S

GREEN

LED

Audible Alarm & Relay Set
Point Voltage (Ref 1)

CN1 CN2 CN3

0V V+

Power

Supply

0V V I

Output

Signal

E

N

S

N/O

Relay

Out

R

O

RED
LED

Voltage (VS)

U

N/C

COM

A

D

0V

Sensor

I

B

L

A
D

6
5

4

3

2

1

M

R

A

L

A

E

Semiconductor (SC) Sensor

Sensor
Voltage

GREEN

LED

RED
LED

SW2

6
5

4

3

2

1

Short to Cancel
Warm Up Delay

Short to Cancel
Warm Up Delay

Relay and
Audible
Alarm Delay
(Minutes)

Sensor Output
(Factory Set)

Output
Range

Audible
Alarm

Divide
Voltage
Output
by 2

Jumpers
for

AC or DC

Relay and
Audible
Alarm Delay
(Minutes)

Sensor Output
(Factory Set)

Output
Range

Audible
Alarm

Divide
Voltage
Output
by 2

0 1 5 10

6

5

Inverted

Only)

Normal

(O

2

4

0-10V

4-20 mA
or 2-10V

3

Disabled

Enabled

2

Disabled
(0-10V,
2-10V)

Enabled
(0-5V or
1-5V)

1

AC POWER

SELECTED

A

D

Change AC/DC Power Jumper
ONLY under No Power

DC POWER

SELECTED

A

D

1 5 10

0

6

5

4

Do Not Change

4-20 mA

0-10V

or 2-10V

3

Disabled

Enabled

2

Disabled
(0-10V,
2-10V)

Enabled
(0-5V or
1-5V)

1

World Headquarters

621 Hunt Valley Circle

New Kensington, PA 15068 USA

Phone: [phone] • Fax: [phone]

Toll Free: 1-800-736-4666

Website: www.MyBacharach.com

E-mail: [e-mail]

114A Georges Street Lower

Dun Laoghaire • Co Dublin • Ireland

Phone: [phone] • Fax: [phone]

CN1

12-24

VAC

CN1

0V V+

12-24 VDC

CN1 CN2 CN3

0V V I0V V+

Power

Supply

Output

Signal

N/O

Relay

Out

A

U

D

I

B

L

A
D

N/C

COM

M

R

A

L

A

E

Jumpers
for

AC or DC

AC POWER

SELECTED

A

D

Change AC/DC Power Jumper
ONLY under No Power

DC POWER

SELECTED

A

D