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Product Features
  • Data concentrator reads monitoring and control functions for up to eight IR400 point IR or IR5500 OPIR detectors at once with one command
  • HART and Modbus communication options provide complete status and control capability in the Control Room
  • Explosion-proof enclosure allows installation in hazardous locations
  • Three-digit LED displays gas concentrations in % LEL, fault codes for troubleshooting and calibration prompts
  • Optional 8 A relays provide outputs for Alarm, Warn, and Fault conditions
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

General Monitors IR4000M Multi-Point Gas Monitor

The General Monitors IR4000M Multi-Point Gas Monitor can be used as an integrated combustible gas detection system, with the capacity to connect eight point IR or open path gas detectors and read their status with one command. The highest current % LEL among all connected detectors is shown continuously during normal operation. An extensive set of menus are easily navigated using a magnetic switch to request the status and configuration data stored by the IR4000M.

Approvals subject to change without notice and may differ based on configuration, part number and/or country.
Contact Customer Service or check approval label on product for specific approval information.

FM (Canada)
  • IR4000M-0-0-00-1-0-1-1 - IR4000M gas monitor, 0-20 mA, push terminals 1
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