Vaisala Immersion Temperature Transmitter TMI110 Vaisala Immersion Temperature Transmitter TMI110

Immersion Temperature Transmitter TMI110

Vaisala high-accuracy immersion temperature transmitter TMI110 is designed for measuring cooling/heating water temperatures in HVAC automation systems. Vaisala TMI110 can also be used for air temperature measurements in air ventilation ducts. The transmitter has a fast response time, enabling precise and reliable control of HVAC systems.


  • Accurate temperature measurement of liquids and air
  • Very fast response time
  • 1‑point traceable calibration (certificate included)
  • Analog (4 … 20 mA) and Modbus RTU output options
  • Installed in a thermowell for measurement in liquids
  • Optimized for building automation and HVAC process control

The TMI110 transmitter belongs to the Vaisala HUMICAP Humidity and Temperature Transmitter Series HMDW110, which includes transmitters for duct mounting, IP65-rated wall transmitters, immersion temperature transmitters, and outdoor transmitters with integrated radiation shields.

Highly accurate

The highly accurate TMI110 measures the temperature of liquid in cooling/heating systems, and the temperature of air in ventilation ducts. When measuring the temperature of liquid, the transmitter is installed in a thermowell. For air temperature measurements, the transmitter can be installed in a duct using a flange. Temperature is measured with a Pt1000 sensor element (class A). The high accuracy and quick response time of the measurement enable precise and reliable control of HVAC systems.

Fast response time

Fast response time of measurement is a top priority in the design of TMI110, enabling instant response in the control loop. Speed and reliability are key factors in the measurement of cooling and heating processes, thus the capabilites of TMI110 are a significant advantage. The transmitter is optimal for building automation and HVAC process control.

Traceable accuracy

All TMI110 transmitters are individually adjusted and delivered with a traceable (ISO 9001) calibration certificate. If required later on, the transmitter can also be field‑calibrated using a Vaisala handheld meter or Vaisala Insight PC software.



Specific References

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