Coming SOON!!!!

Since the release of the original SEC Millenium 22 years ago, our engineers have designed and implemented enhanced optical absorption integrity, lower power consumption and developed software algorithms for our other infrared family of gas detectors and analyzers.  All of this knowledge, experience and features have been incorporated into the SEC Millenium Hawk.


SEC 3500 Relay Controller

  • Relay controller for gas leak detection
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The SEC 3500 HMI is an operator interface dedicated to communicating to the SEC 3100 gas detectors, SEC 4855 Relay Controllers, SEC DAIM units.  The SEC 3500 has output capabilities to the plant control system.  The SEC 3500 uses an industry standard RS485 communication protocol to interrogate bidirectional to the entire device network.

Standard display screens are set up for intuitive interaction for the operator and network devices.  The primary screens are Main Zone Summary, Alarm Summary, Bus Summary.  Individual device screens can be viewed and programmed from the SEC 3500 HMI.  There is password protected security allowing different levels of operators to access screens that allow modifications to the hazardous gas detection system.

The SEC 3500 Relay Controller is used with the SEC 3500 Operator Interface via the Modbus RS-485 network. There are 8 or 16 addressable modules available. Alarm relays can be used to actuate alarm and devices control of the gas detection equipment.


  • Alarm Relays
  • 8 or 16 Addressable modules available
  • Refineries
  • Drilling/Production Platforms
  • Fuel Loading Facilities
  • Oil Well Logging
  • LNG/LPG Processing and Storage Facility
  • Gas Turbines
  • Chemical Plants
  • Compressor Stations
  • Waste Water Treatment Facilities
  • Transportation Facilities

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