RKI T3A 3-Wire Explosion Proof Transmitter, With 2 Relays, select sensor (each)

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Fixed System
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T3A Gas Detector

3-Wire Explosion Proof Transmitter


  •  Electrochemical, Infrared, catalytic bead sensor element
  • Wire powered (3-Wire), 12 to 35 VDC operating voltage

  • Digital Modbus output

  • Operating temperature range -40°C to +54°C

  • Graphical LCD with LED backlight

  • 3 Push-button interface (ADD, MENU, SUB) with 3 corresponding magnetic, non-intrusive switches

  • 2 Individually configurable alarms

  • 2 Front panel LED indicators (amber and red)

  • 2 Optional fully programmable alarm relays (dry contacts)t

  • Output options: 4-20mA (3-wire) analog, RS-485 modbus


The T3A Series Gas Detector ambient air hazardous gas detector is a versatile assembly  that uses an electrochemical, infrared, catalytic bead sensor element to detect a variety of gases. Wired power (12 to 35 VDC) with 4-20 mA analog and RS-485 Modbus outputs standard. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.

The T3A represents the latest leading edge technology in fixed gas detection today.


Contact us for returns within 14 days. 10% restocking fee will apply to most items. Made-to-order and custom items are non-returnable, non-refundable. Customer will be liable for return shipping costs. Many items ship direct from manufacturer.

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