COMET T3110 – 4-20mA Transmitter with Integrated Temperature, Humidity, and Dew Point Sensor

COMET T3110 – 4-20mA Transmitter for Outdoor & Indoor Climate with Integrated Sensor, Temperature –30 to +80 °C, Humidity 0–100 %RH, Dew Point 

The COMET T3110 is a robust 4-20mA transmitter for temperature, relative humidity, and dew point – specially designed for outdoor and indoor applications in weather stations, building automation, BMS systems, warehouses, greenhouses, solar plants, or process monitoring. With integrated sensors and a galvanically isolated current output (4-20 mA), it is perfect for connection to PLCs, controllers, recorders, or remote systems – even over long distances without signal loss.

The internal sensor measures temperature from –30 to +80 °C (±0.4 °C) and humidity from 0 to 100 %RH (±2.5 %RH from 5–95 % at 23 °C). Dew point is calculated internally (±1.5 °C at T<25 °C and RH>30 %). In addition, all other humidity parameters are available: absolute humidity, specific humidity, mixing ratio, and specific enthalpy. The output is freely scalable – you define via PC the measuring range and which parameter (T, RH, Tdp, etc.) is output.

The weatherproof IP65 housing (electronics) and IP40 sensor make the T3110 a reliable partner for demanding outdoor use (–30 to +80 °C). Galvanic isolation protects against ground loops and interference. The sensors are long-term stable and available with a traceable calibration certificate (according to EN ISO/IEC 17025) – top quality for critical applications. Power supply 9–30 V DC – simple and flexible.

Why the COMET T3110 is the Professional Outdoor Transmitter:

• Galvanically isolated 4-20mA output – interference-resistant & PLC-compatible
• Integrated sensors – no external probe required
• 3-in-1: Temperature + Humidity + Dew Point – all humidity parameters available
• High precision – Temp. ±0.4 °C | Humidity ±2.5 %RH | Dew point ±1.5 °C
• Free scaling – configurable via PC (parameter & range)
• IP65 housing – weatherproof for outdoor & indoor use
• Wide supply voltage – 9–30 V DC
• Long-term stable & maintenance-free – with calibration certificate

Technical Data T3110:

• Temperature range: –30 to +80 °C (±0.4 °C)
• Humidity: 0 to 100 %RH (±2.5 %RH from 5–95 % at 23 °C)
• Dew point: –60 to +80 °C (±1.5 °C at T<25 °C and RH>30 %)
• Output: 4-20 mA, galvanically isolated
• Resolution: 0.1 °C / 0.1 %RH
• Power supply: 9–30 V DC
• Operating temperature: –30 to +80 °C
• Protection: IP65 (electronics), IP40 (sensor)
• Dimensions: 88.5 × 170 × 39.5 mm; probe length 75 mm
• Weight: approx. 150 g
• Warranty: 3 years

Perfectly suited for:

• Weather stations & outdoor climate monitoring
• Building automation & BMS systems
• Warehouses & production halls (outdoor measurement)
• Greenhouses & agriculture
• Data centers & server rooms (outdoor air)
• 4-20mA connection to PLC/BMS
• Humidity & temperature control
• Integration into existing analog systems

Installation & Commissioning – Done in Minutes

Mount the device on a wall or pole, connect power (9–30 V DC) and the 4-20mA loop – that’s it! Configure the output via PC (COMET software) to select parameter and range. No calibration required when replacing the device.

Summary:

• Ambient temperature and relative humidity transmitter
• Weather sensor for environmental monitoring
• Suitable for indoor and outdoor applications
• Integrated sensors for relative humidity and temperature
• Measured values are converted into additional humidity parameters: dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy.

Scope of Delivery:

• T3110
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration