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Product Features
  • Analog and digital controller

  • 4 or 8 lines, up to 32 detectors

  • Up to 32 fully programmable relays (OR, AND, NAND, NOR, Voting functions)

  • Large graphic display

  • Remote modules (cost savings on wiring installation)

  • USB Data logging capability

  • RS485 Modbus RTU and multiple analog outputs

Delivery options

At Cadmus Products we aim to deliver orders efficiently and at highly competitive rates. 

  • We can ship consignments of all shapes and sizes and hazardous content across the UK and worldwide. Most of our orders are sent via DHL, however sometimes we may use other couriers.
  • If you are purchasing a laboratory product online you can find out the price of shipping checkout. If you are obtaining a quote for a product, then we will email you
    with our best shipping prices along with your quote.
  • Please see our delivery page for full information

Teledyne Oldham MX 43 Fixed Gas Controller

The Teledyne Oldham MX 43 is fully scalable and designed to meet functional safety performance level 1 standards. The MX 43 is an analogue and digital controller that continuously measures and controls gases in the atmosphere. The MX 43 gas detector manages both digital lines and analogue channels, and covers all needs for a wide variety of gas monitoring applications. The MX 43 digital technology allows up to 32 detectors to be distributed on 8 lines for increased cost savings.

USB Module for Improved Storage Capacity

Teledyne Gas and Flame Detection has improved the storage capacity of its MX 43 controller by adding a USB module. The USB option provides the user with the following benefits:

  • continuous data logging on the USB key at a user-defined sampling rate from 2 seconds to 15 minutes,
  • recording in real-time of all events (alarms, faults, alarm resets, calibration etc.)
  • automatic backup of the configuration
  • automatic backup of the firmware
  • loading a configuration or a firmware file from the USB stick in order to restore or update the system easily.

The 4GB USB drive fitted with the USB kit, provides a recording capacity of more than 2 years (18 months in the worst case for a controller equipped with 32 detectors), a 2-second sampling rate (32 measurements every 2 seconds), and 100 events per day per gas detector (3200 events per day).

The COM 43 Programming CD

The MX 43 is now available with a programming CD that is compatible with any MX 43 controllers already in use. The COM 43 is a simple application that gives the user access to the advanced features of the MX 43 controller and makes programming fast and easy to do on one's own. Users save precious time by configuring the controller's parameters on their computer and transferring these parameters directly to the MX 43 using a USB cable.

Programming is quick and easy: the COM 43 application can be installed on a computer from a CD and gives access to all of the controller's options:

  • Configuration of measurement channels
  • Simplified relay programming
  • Up to 5 on-board functions: OR, AND, NOR, NAND, VOTING
  • Advanced management of audible alarms with timer options (holding time, automatic acknowledgement, reactivation, evacuation)

The COM 43 is equipped with useful features that make programming your MX43 gas detector easy, quick, and secure:

  • Graphic display for easy relay programming
  • Architecture displayed progressively as the programming process is completed
  • Access to a Teledyne Gas and Flame Detection gas monitor library pre-programmed according to industry standards
  • Highly practical "copy-paste" function saves time by preventing programming errors from one sensor to the next
  • "Verification/validation" feature to ensure correct programming and to flag any programming errors before validating
  • Transfer settings to the controller in just a few seconds

The CD also contains the French and English user manuals for the COM 43 and the MX 43 controller.

Model MX 43 gas detection control panel
Dimensions (wall-mounted version) 370 x 299 x 109 mm (14.6 X 11.8 X 4.3 Inches)
Dimensions (rack) 19", 4U ; 482.8 X 177 x 192.5 mm (19.1 X 7 x 7.6 Inches) 
Ingress protection IP55 (wall-mounted), IP31 (rack)
Cable entries (wall-mounted version 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
Display 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 for detector status
1 Common LED for fault condition
1 Common LED for power indicator
Buttons 5 Smart keys
1 Audible alarm accept/reset button 
Operating use
Operating temperature -20°C to +50°C
Storage temperature -20°C to +50°C
Humidity 5 To 95% RH
Power  100-240 Vac 50-60 Hz or 21-28 vdc, 112 W max
Battery Embedded back up power supply in option (0.6 Ah) 
Consumption 500 mA min (without module)
Measurement lines
Digital lines 8 Maximum
RS-485 communication, proprietary protocol, 9600 baud
2 Twisted shielded-pair cable
Analog channels 8 Maximum
0-23 mAa analog signal input (4 to 20 mA reserved for measurement)
120 Ohm load resistance
2 Or 3-core shielded cable
Voltage (typical) 21 To 28Vdc
Maximum current output per line 1.2 A (1.5 A intermittently)
Maximum 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 instantenous 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 Vca 2 A (inductive)
Digital outputs Rs-485 modbus RTU serial link
EMC According to EN50270
ATEX EN50271 and metrological performances according to EN60079-29-1
Low voltage directive According to EN61010
CSA Pending
Functional safety
( Reliability data )
SIL1 capability according to EN50271:2010
du =2,29.10-6, PFDavg=1,03.10-2, Ti=1 year, MTBF=20 years, SFF 60% (data for 4 channel version, 24 vdc
MED According to marine equiment directive 96/98/EC. Fulfills the EMC requirements for installation in general power
distribution zone and/or deck zone.
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