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 Analog Interface Module (AIM)

  • 3100 AIM for gas leak detectors
Click image to enlarge

The SEC 3100 AIM is used in conjunction with the SEC 3100 explosion proof transmitter or SEC 3100 DIN transmitter gas detection equipment.  A non-SEC device with a conventional analog 4 - 20 mA output is wired to the SEC 3100 AIM.  The SEC 3100 AIM receives a sourced 4 - 20 mA signal from the device, converts the analog signal into a digital signal compatible with the SEC 3100 transmitter.  The SEC 3100 AIM is factory programmed with the following customer supplied variables:

  • Device Name
  • Range
  • Unit of Measure
  • Calibration Value

The SEC 3100 visually displays the variables on the LCD the same as if the SEC 3100 had an SEC gas leak detector connected.  The SEC 3100 transmitter reports the foreign device status bidirectional to the SEC 3500 HMI Operator Interface via the MODBUS RS485 communication network.  The SEC 3100 AIM can be installed in the SEC 3100 explosion proof transmitter housing using a taller window dome.

The SEC 3100 AIM accepts one device input. Examples of 4 - 20 mA hazardous gas detection devices that can be used with the SEC 3100 AIM are:

  • Open Path Gas Detectors
  • Fire Detectors
  • Temperature Transmitter
  • Pressure Transmitter
  • Pyrolyzers

The SEC 3100 Analog Interface Module “AIM” interfaces non-SEC 4-20mA devices to the hazardous gas detection Modbus network through the SEC 3100 Universal Transmitter. Device names are displayed on the SEC 3100. The AIM accepts an analog 4-20mA input signal.


  • Interfaces non-SEC 4-20mA devices to the Modbus Network
  • Explosion Proof
  • Accepts a 4-20mA output signal

 *Please select the quantity for each item you wish to order and click the 'Add To Cart' button below.

Operating Voltage:

  • 18-32 VDC

Temperature Rating:

  • -40° to + 70°C           

Device Variable Characters

  • Device Name: 8
  • Range: 4
  • Unit of Measure: 4
  • Calibration Value: 4 (Standard ASCII Characters)

Operating Current (No Sensor):

  • 50mA @ 24VDC


  • 0-99% RH (non-condensing)

Output (digital):

  • SEC SSP (Smart Sensor Protocol)

Input (analog):

  • Impedance: 200 Ω
  • Max applied voltage: 32 VDC

Applications where non-Sensor Electronics 4-20mA output devices need to be included on the Modbus Network