RTT15S Temperature Transmitter

The optical, microprocessor-based temperature transmitter as rugged as it is accurate

RTT15S industrial-grade circuits and sealed electronics deliver accurate, repeatable results in virtually any environment.

The Model RTT15S is a microprocessor-based temperature transmitter that uses the HART® communication protocol. It receives input signals from thermocouples, RTDs, ohm, or millivolt sources. It is available as a basic module, or in an explosion-proof housing with optional display and optical buttons for local configuration.

It’s configurable for hazardous locations, and offers a variety of advanced-performance features, including:

  • Unique optical buttons allow operation through the glass of explosion-proof housing
  • User-friendly interface with 5 lines of text or symbols in 7 languages
  • Optional LCD display with selectable, programmable backlight
  • Configurable bar graph and automatic selfcalibration
  • Temperature range from -40°C to +85°C (-40°F to +185°F)
  • Easy installation and mounting


  • Optional LCD display with selectable, programmable red or white backlight.
  • Optional optical buttons for local configuration in seven languages.
  • User-selectable HART versions 5 and 7.
  • IP66 housing with explosion-proof glass window.
  • Basic module can mount to surface or DIN rail.
  • One unit configurable for TC, RTD, mV, and ohm.
  • Supports 2-, 3-, or 4-wire RTDs.
  • Allows average or difference measurement using 2-wire inputs.
  • TC cold junction compensation.
  • Galvanic isolation for both input and output.
  • Automatic self-diagnostics and self-calibration.
  • Wide selection of sensors and thermowells.
  • Configurable failsafe mA value.
  • FMEDA report in support of SIL applications.
  • Conforms to applicable European Union Directives (product marked with “CE” logo).
  • EMC immunity per EU Directive 2014/30/EU. Compliant with NAMUR NE 21 criterion for burst.
  • Meets many testing agency requirements for hazardous area installations.
  • Standard 5-year warranty.