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 3100 ISO Repeater

  • ISO repeater for gas detection equipment
Click image to enlarge

The SEC 3100 ISO Repeater extends the distance and increases the number of devices to the RS-485 network.  The SEC 3100 ISO Repeater provides a 1500V ground isolated RS485 interface.  The SEC ISO Repeater is a bidirectional bitwise data translator specifically designed for the 9600 Baud Modbus interface. This is used by the SEC 3100/SEC 3500 gas detection equipment.  The 3100 ISO Repeater isolates the interface from the ground noise interference. This extends the wiring distance, and allows more transmitters to be used on a single loop.  It has an explosion proof housing for hazardous gas detection applications. The SEC 3100 ISO Repeater has three (3) ¾” NPT threaded connectors for mounting and wiring the sensor and transmitter into a permanent installation.  3100 ISO Repeaters operate on 24 VDC.  There are three (3) LED’s that indicate activity on Channel 1, Channel 2 and the Power.   For an installation diagram for the SEC 3100 ISO Repeater click here.


  • Extends distance between devices
  • Increases number of devices on RS-485 network
  • Explosion Proof
  • Isolated bi-directional data flow
  • Transient suppression on RS-485 data lines
  • 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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