Battery Powered Temperature Gauge DM650TM

The DM650TM is a battery-powered digital temperature indicator that uses RTD or thermocouple sensors to deliver higher accuracy, wider temperature range, and greater ambient stability than a traditional bi-metallic or gas-filled thermometer. Powered by a single AA 3.6V lithium battery for a minimum of one year, it displays sensor temperature in °C or °F on a 6-digit LCD alongside optional custom messages and alert events tied to user-set temperature bands.

A volt-free changeover relay supports high, low, or deviation alarm actions with fully adjustable set point and hysteresis, and can be disabled to extend battery life, or repurposed to flag a low battery condition. The built-in datalogger records up to 5000 time and date-stamped points of temperature and relay state, readable via USB to a text file for export, and a real-time clock timestamps every logged reading.

  • RTD or Thermocouple Input — Accepts either sensor type for flexible temperature measurement.
  • Long Battery Life — Single AA 3.6V lithium battery, minimum one year life.
  • Configurable Alarm Relay — High, low, or deviation alarm with adjustable set point and hysteresis; can be disabled to save battery.
  • 5000-Point Data Logger — Time and date-stamped logs of temperature and relay state via USB.
  • Real-Time Clock — Timestamps every data logger entry accurately.
  • Custom Display Messages — Optional 1-32 character messages tied to alert events.

What sensors does the DM650TM accept?

It accepts RTD or thermocouple temperature sensors.

How long does the DM650TM battery last?

A minimum of one year on a single AA 3.6V lithium battery, depending on active features.

Does the DM650TM have an alarm output?

Yes, a volt-free changeover relay supports high, low, or deviation alarms with adjustable set point and hysteresis.

How much data can the DM650TM store?

Up to 5000 time and date-stamped temperature and relay-state readings.

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