Posted in | Control Systems

Integrated Alarm and Control System for up to 32 Gas Detectors – Model X40

The Model X40 is an integrated alarm and control system capable of monitoring a number of gas detection sensors and/or a broad range of other field devices.

The versatile control system is built to receive and monitor inputs with either Serial RS-485 Modbus™ or 4 - 20 mA DC and is offered in two packages:

  • Model X40-8
  • Model X40-32

Both the packages function as a Modbus™ Master and can be tailored and expanded based on unique application needs using the stackable din-rail mounted I/O modules. All I/O modules operate on 11.5 - 30 VDC and are individually addressable.

The X40-8 offers power for up to eight field devices and can hold up to six 4-channel I/O modules. The Model X40- 32 offers power for up to 32 field devices and can hold up to 12 4-channel I/O modules.

The I/O modules provided with the Model X40 include a 4-channel 4 - 20 mA input module (DA-4), a 4-channel 4 - 20 mA output module (AO-4), a 4-alarm relay output module (RL-4), and a 4-relay contact input module (DI-4). The modules can be installed remotely to simplify field wiring or placed within the main system enclosure.

The Model X40 is fully field programmable using a small handheld magnet and provides state-of-the-art technology with smart, embedded intelligence. The control system displays field device status and real-time readings on a backlit LCD screen.

During regular operation, the screen displays the current reading (gas type, channel number, and gas concentration) and alarm status for up to eight field devices at the same time. The display is sequential and during regular operation it automatically cycles via each of the active channel screens.

In addition to the unique features of the system is a wireless option that can be used with RXT-320 SmartWireless® transceivers. Enclosure options comprise NEMA 1 panel mount, NEMA 4X, and hazardous locations.

Download the Brochure for More Information

Key Features

  • Wire or distributed I/O
  • 8 to 32 channel capacity
  • Analog or RS-485 input options
  • SmartWireless® capability
  • Simple and intuitive field configuration
  • Wide event data logging


  • Pulp and paper mills
  • Oil and gas drilling rigs
  • Offshore production platforms
  • Oil and gas production sites
  • Wastewater treatment plants
  • Refining and petrochemical
  • Food and beverage processing

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