Det-Tronics 505A3A2A1W (006748-002)

Model 505 Combustible Transmitter and Junction Box

Condition: New
Brand: Det-Tronics
Status: Obsolete
SKU: 91580
Manufacturer Part #: 505A3A2A1W
Secondary Part #: 006748-002
Note: No replacement available at this time.


The Model 505 Transmitter is used with one constant voltage catalytic gas sensor to provide a linear 4 – 20 mA output signal corresponding to a 0 to 100% LFL gas concentration. Intrusive calibration and sensor sensitivity checks are performed using a standard digital voltmeter (not provided). An explosion-proof junction box with removable cover is included with all Model 505 Transmitters. Options include junction box material (aluminum or stainless steel), number of conduit entry ports (up to five), conduit entry threads (NPT or Metric), orientation of entries (180 degree straight-through or 90 degree “L”), and signal output load impedance (125 or 500 ohms).

Additional information

Weight 8.9 lbs

Detector Electronics Corportation




Unit of Measurement

EA (Each)

Production Status



  • Linear 4 – 20 mA output.
  • Current level indicates fault condition and calibrate mode.
  • Sensor sensitivity check.
  • Suitable for use in a wide variety of combustible gas detection applications.
  • Compatible with all Det-Tronics catalytic sensors.
  • Direct field replacement for Det-Tronics K Series and Model 500 Transmitters utilizing existing wiring and junction boxes.
  • Explosion-proof junction box available in aluminum or stainless steel with up to five ports two port model available in 90° or 180° configuration.
  • FM, CSA, ATEX/CE and IECEx Certified.

Combustible Gas Detector Transmitter; Model 505


Det-Tronics - Data Sheet

Flame, Gas and Systems


Det-Tronics - Product Catalog