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ADM222 – RTD Temperature Trip Transmitter/Isolator

Our ADM222 is a RTD Temperature Trip Transmitter/Isolator which is suitable for SIL 1 & SIL 2 rated (EN 61508-2) safety instrumented system (SIS) loop applications, as 1oo1 architecture (HFT:0).

Our ADM222 is an RTD Temperature Trip Transmitter which is suitable for SIL 1 & SIL 2 rated (EN 61508-2) safety instrumented system (SIS) loop applications, as 1oo1 architecture (HFT:0).

  • Input is any 2 or 3 Wire PT100 RTD connection. Any temperature range with a span greater than 25°C may be specified as standard. (PT1000 input & 4-Wire input options also available)

  • Output is any standard process current source (up to 20mA). Drive voltage 11Vdc,  max 550Ω load at 20mA. Voltage source up to 10V, min 500Ω load

  • Trip Output; A set of changeover contacts rated at 250VAC, 2A, 100VA (resistive). Fail Safe Relay De-energises on Trip & on Loss of Power. Red LED indication of Relay Status on front fascia; Extinguished in Trip/De-energised state.

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