COMET T7411 – Temperature, Humidity, and Barometric Pressure Transmitter with Cable Probe

COMET T7411 T+RH+Pressure Transmitter RS485 Cable Probe 

The COMET T7411 is a rugged industrial transmitter designed for simultaneous measurement of temperature, relative humidity, and barometric pressure with a remote combined probe on a 1-meter cable. This design allows flexible probe placement in challenging installation positions while keeping the electronics protected. The T7411 is specifically developed for continuous operation in building automation, production monitoring, warehouses, clean rooms, laboratories, or meteorological stations.

In addition to the primary measured values, the T7411 automatically calculates all key derived humidity parameters such as dew point, absolute humidity, specific humidity, mixing ratio, and specific enthalpy. The integrated barometric pressure sensor enables precise altitude correction and weather monitoring.

Thanks to its galvanically isolated RS485 interface with Modbus RTU protocol (factory-installed), the T7411 integrates seamlessly into any PLC, SCADA, or building management system. The large dual-line LCD can display temperature, humidity, pressure, or dew point, and can be disabled during continuous operation if needed.

The probe operates up to +105 °C, and the housing is IP65 protected – the T7411 performs reliably from –30 to +80 °C and delivers years of stable performance.

Why the COMET T7411 is the ideal industrial solution:

• Remote probe with 1 m cable – flexible placement, usable up to +105 °C
• Three measured parameters: temperature, humidity, and barometric pressure
• All humidity parameters included – dew point available directly
• Galvanically isolated RS485 – interference-free over long distances
• Modbus RTU preinstalled – ready for immediate integration
• Large dual-line display – switchable
• IP65 housing – ideal for harsh environments
• High accuracy: Temperature ±0.4 °C | Humidity ±2.5 %RH | Pressure ±1.3 hPa
• Free TSensor software for configuration
• 3-year warranty

Technical data:

• Probe temperature range: –30 to +105 °C (±0.4 °C)
• Relative humidity: 0 to 100 %RH (±2.5 %RH from 5–95 %RH at 23 °C)
• Barometric pressure: 600 to 1100 hPa (±1.3 hPa at 23 °C, 800–1100 hPa)
• Dew point: –60 to +80 °C (±1.5 °C at T<25 °C and RH>30 %)
• Resolution: 0.1 °C / 0.1 %RH / 0.1 hPa
• Probe cable length: 1 meter
• Communication: RS485 galvanically isolated, Modbus RTU, ARION, Advantech ADAM
• Power supply: 9–30 V DC
• Protection rating: IP65 (electronics), IP40 (sensors)
• Operating temperature: –30 to +80 °C
• Warranty: 3 years

Perfectly suited for:

• Building automation and BMS systems
• Data centers and server rooms
• Clean rooms and pharmaceutical production
• Food storage and cold rooms
• Museums, archives, and repositories
• Meteorological stations
• Production monitoring (drying processes)
• Challenging installation sites with cable probe

Installation – flexible and simple

The housing is attached to the wall with two screws, and the cable probe can be positioned precisely where the measurement is needed. The spring terminal connections make wiring quick and easy.

Summary:

• Humidity and temperature transmitter with temperature and humidity probe on a cable
• For indoor and outdoor use
• Temperature and humidity probe on cable
• Measured values can be converted into additional humidity-related parameters: dew point, absolute humidity, specific humidity, mixing ratio, specific enthalpy
• Integrated pressure sensor
• The device is supplied with a temperature and humidity probe with a 1-meter cable.

Scope of delivery:

• T7411
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration