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MX43 Alarm/Display Unit

MX43 Alarm/Display Unit

Quick Overview

The MX 43 is an analog and digital controller designed for the continuous measurement and control of the gases present in the atmosphere and for 4-20mA or digital contact signal. The MX 43 digital technology allows up to 32 detectors to be distributed on 8 lines for increased cost savings.
Hazardous Area Approved
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  • Analog and digital controller.
  • 4 or 8 lines / 16 to 32 detectors max.
  • Highly versatile controller
  • Cost savings on wiring installations

General Specifications

Dimensions (wall-mount): 370 x 299 x 109 mm
Dimensions (rack) 482.8 x 177 x 192.5 mm
Ingress protection IP55 (wall-mount), IP31 (rack)
Cable entries (wall-mount):

12 M16 cable glands, 4 to 8 mm² (8 to 11 AWG) outer diameter cable
6 M20 cable glands, 6 to 12 mm² (7 to 9 AWG) outer diameter cable

LCD back-lit display + smart keys
Display in video inverse in case of fault
Customizable by user (display 1 to 16 channels simultaneously, fixed or scrolling, on events...)
Bar graph with alarm threshold
Visual indicators: 7 LEDs per line, 1 LED fault indicator
Buttons: 5 smart keys, 1 audible alarm accept/reset button
Operating Environment: Temp: -20°C to +50°C, Humidity 5 - 95%RH
Power Supply: 100-240 vAC 50-60 Hz or 21-28 vDC, 112 W max
Optional Battery: Embedded back up power supply in option (0.6 Ah)
Consumption: 500 mA min (without module)

Monitored Channels

Digital lines:

8 maximum
RS-485 communication, proprietary protocol, 9600 Baud
2 twisted shielded-pair cable
Analog channels:

8 maximum
0-23 mA analog signal input (4 to 20 mA reserved for measurement) 120 Ohm load resistance
2 or 3-core shielded cable
Voltage (typical): 21 to 28 vDC
Max current output per line: 500 mA
Max current output in total: 2.4 A permanent (3.2 A intermittently)


Per channel:

5 alarm levels (A1, A2, A3, Overscale, Underscale) + Fault
Non-ambiguity reading option for combustible gases monitoring
Programmable thresholds:

On latest or averaged values, rising or falling alarms, manual or automatic acknowledgement
On-board relays:

5 fully programmable alarm relays
1 fault relay (non-configurable)
Dry contact relay
DPCO relays with contact rating of 250 vAC, 2 A (inductive)
Digital outputs: RS-485 Modbus RTU serial link

Availability: In stock

Price range : £1,065.00 - £3,589.00

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Part Builder

Description       MX43 Controller

Components / Downloads

For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

MX 43 Gas Detection Control Panel
View FileDatasheet
   Size: (2.29 MB)

Not Available online

COM 43 Installation CD with USB cable
or call us for a quote