COMET T7410 Temperature Humidity Air Pressure RS485

COMET T7410 Temperature, Humidity, and Air Pressure RS485 Transmitter

The COMET T7410 is a powerful all-in-one transmitter designed for professional environmental monitoring: it simultaneously and accurately measures the three most important climate parameters – temperature, relative humidity, and barometric air pressure. It is the first choice for demanding applications in building automation, data centers, museums, laboratories, production halls, meteorological stations, and anywhere precise and long-term stable measurements of temperature, humidity, and atmospheric pressure are needed.

Thanks to the galvanically isolated RS485 interface with factory-set Modbus RTU protocol, the T7410 can be easily integrated into nearly any control system, PLC, or SCADA environment. Up to 256 devices can operate on a single bus, making it perfect for large monitoring networks. Alternative protocols like Advantech-ADAM, ARION, and HWg-Poseidon are also available. Data transmission is absolutely interference-free over long distances up to 1200 m.

A large, high-contrast dual-line LCD displays temperature, humidity, pressure, or derived values like dew point and can be completely disabled during continuous operation to save energy. Full configuration including altitude correction of the pressure measurement and calibration is easily done via the free COMET TSensor software – or as needed via Hyperterminal.

The T7410 is built for tough industrial continuous use: IP65 protection, durable combined temperature/humidity sensor with stainless steel mesh filter, integrated barometric pressure sensor in the housing, operating temperature –30 to +80 °C, and measurement accuracy that meets the highest standards. Whether in cold storage, hot production rooms, or damp environments, this transmitter delivers reliable values for years.

Why the COMET T7410 is the ideal 3-in-1 solution:

• Three measurements in one device: temperature + humidity + barometric pressure
• Integrated altitude correction – precise pressure value independent of installation height
• Galvanically isolated RS485 interface – maximum interference immunity
• Modbus RTU factory configured – immediately compatible with most systems
• Dew point, absolute humidity, specific humidity etc. directly calculated
• Robust & durable: IP65 housing, stainless steel sensor filter, no moving parts
• Free TSensor software including calibration function
• Large dual-line display – local display can be turned off
• Wide voltage range 9–30 V DC – flexible use
• Easy wall mounting – requires only two screws

Technical highlights in detail:

• Temperature: –30 to +80 °C (±0.4 °C), resolution 0.1 °C
• Relative humidity: 0 to 100 % RH (±2.5 % RH in 5–95 % range), resolution 0.1 % RH
• Barometric pressure: 800 to 1100 hPa (±1.3 hPa at 23 °C), resolution 0.1 hPa
• Additional selectable units: kPa, PSI, inHg, mBar, oz/in², mmHg, inH₂O
• Dew point: –60 to +80 °C (accuracy ±1.5 °C at RH >30 % and T <25 °C)
• Altitude correction: freely adjustable offset for precise pressure measurement at any altitude
• Communication: galvanically isolated RS485, up to 115200 baud, max 1200 m cable
• Protocols: Modbus RTU (standard), Advantech-ADAM, ARION, HWg-Poseidon
• Power consumption: < 0.5 W – extremely energy efficient
• Protection class: IP65 (housing), sensor filter IP40
• Housing material: ASA (highly weather resistant)
• Dimensions: 88.5 × 170 × 39.5 mm, weighing approx. 150 g
• Calibration interval: recommended 1 year

Perfectly suited for:

• Building automation and BMS systems
• Data centers and server rooms
• Museums, archives, and depots
• Pharmaceutical production and clean rooms
• Food storage and cold storage facilities
• Meteorological stations
• Energy and environmental monitoring
• Production monitoring (e.g. paint shops, drying processes)

Installation and commissioning – done in minutes

Two mounting holes, orient sensor downwards, feed cable through the gland, connect terminals – done. The spring-loaded terminals make wiring easy. Thanks to galvanic isolation and high interference immunity of the RS485 line, the T7410 works flawlessly even in electrically noisy environments.

Summary:

• Environmental temperature, humidity, and air pressure transmitter
• Suitable for indoor and outdoor use
• Integrated sensors for relative humidity, temperature, and air pressure
• Measured values are also converted to other humidity parameters: dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy

Scope of delivery:

• T7410 device
• User manual
• Returnable calibration certificate
• Free TSensor software for transmitter configuration