The ACI Transmitter Room Series features a two-wire, 4 to 20 mA loop powered output with optional 3-Wire voltage output signals available

All transmitters include Zero and Span adjustments for field calibration and are calibrated using NIST Certified Calibration equipment

ACI recommends the use of an 18 to 22 AWG shielded cable for all temperature transmitter installations to reduce the chances of noise being introduced onto the signal lines

The room transmitters are designed to be mounted over a standard single gang junction box or hole in the wall

For best accuracy, ACI recommends the use of the A/TTM Series Matched transmitters with 3 or 5 Point NIST Calibration Certificate, since they include a second calibration step in which the RTD and transmitter are calibrated together as a system

A/TTM series matched transmitters include a foam pad to reduce the effects of self-heating from the transmitter and thermal drafts from within the wall

Optional Set Point, Override and Loop Powered LCD Display.