22May2002 Page 1
2-Wire Toxic Smarter Transmitter
I. Description:
The model TA-2102 smarter Transmitter provides remote detection of a specific toxic gas
using Mil-Ram’s patented no false alarms electrochemical sensor technology. The
transmitter is two-wire loop powered and transmits a standard 4-20mA signal. The smarter
transmitter operates on 10-30 VDC.
II. Smarter Features:
• 2-Wire Loop Powered – operates on 10-30 VDC and generates a standard 4-20mA
signal
• Self-Calibration – unattended span calibration adjustments performed every 30 days
based on life curve for sensor
• Auto-Calibration – non-intrusive calibrations using a magnet to activate zero and span
switches located behind glass window of explosion-proof junction box – no mechanical
adjustments required
• LCD Display – 12 character x 2 line display provides meter readings, calculated values
and diagnostic messages
• Life Remaining – sensor life remaining based on calibration history, life curve for sensor
and electrical characteristics of sensor
• Peak Value/15-min. TWA/Number of days since last gas calibration—Transmitter
displays this information on demand
• Loop Test – Output 4/8/12/16/20mA to verify readings and alarms at controller
electronics
• Calibration Mode Alarm Inhibit – during span calibration and for a period of 5 minutes
after calibration, the transmitter outputs 4.0mA
• Diagnostics – continuous diagnostics related to both hardware and software operation
with auto reset of micro-controller in the event of software failure – provide messages
including Replace Sensor, Remaining Sensor Life and Sensor Disconnected
