COMET T3419P Compressed Air Humidity & Temperature Sensor RS485

COMET T3419P Compressed Air Humidity & Temperature Sensor RS485

The COMET T3419P is a specialist in the reliable and highly precise measurement of temperature and relative humidity directly in compressed air and gas systems up to 25 bar. This professional measuring device was specifically designed for tough industrial use in compressed air treatment, drying systems, pneumatic systems, and everywhere accurate humidity values in compressed air are crucial for process security and energy efficiency. The remote sensor head is firmly connected to the device, ensuring long-term stable measurements even under high pressure and flow speeds.

Thanks to the galvanically isolated RS485 interface, the T3419P can be easily integrated into existing automation systems, SCADA systems, or building management systems. The proven Modbus RTU protocol is preset at the factory, with alternative options including Advantech-ADAM, ARION, and HWg-Poseidon protocols. Up to 256 devices can operate on a single bus, ideal for large compressed air networks with many measurement points.

The large, clear dual-line LCD optionally displays temperature, relative humidity, or the directly calculated dew point, and can be completely switched off for continuous operation to save power. The entire configuration, including calibration, is easily done via the free COMET TSensor software. For traditionalists, many basic settings can also be made directly via Hyperterminal.

The T3419P is built for true 24/7 industrial use: IP65 housing, sensor head rated for continuous compressed air pressure up to 25 bar, high-quality polymer humidity sensor with stainless steel sintered filter, operating temperature from –30 to +80 °C, and a measurement accuracy meeting the highest ISO 8573 standards. You can always keep the residual moisture in your compressed air under control and avoid costly damage caused by condensate or overly dry air.

Why the COMET T3419P is the number one choice for compressed air monitoring:

• Designed for compressed air up to 25 bar – directly installable in compressed air lines
• High-precision polymer humidity sensor – extremely fast response time, long-term stable
• Integrated dew point calculation – immediate pressure dew point without additional conversion
• Galvanically isolated RS485 interface – interference-free transmission even over 1200 m
• Modbus RTU factory configured – compatible with nearly all controllers
• Robust & low maintenance – stainless steel sintered filter, IP67 connector rating
• Free TSensor software – easy configuration and calibration
• Large dual-line display – local display switchable off for continuous operation
• Optional SH-PP flow chamber – for precise measurement at low pressures
• Wide power supply range 9–30 V DC – flexible usage

Technical highlights:

• Temperature range: –30 to +80 °C (resolution 0.1 °C)
• Relative humidity range: 0 to 100 % RH (no permanent condensation!)
• Dew point range: –60 to +80 °C (accuracy ±1.5 °C at RH >30 % and T <25 °C)
• Sensor head pressure resistance: up to 25 bar continuous pressure (2500 kPa)
• Connection thread: G 1/2" with O-ring seal
• Communication: galvanically isolated RS485, up to 115200 baud, max. 1200 m cable length
• Protocols: Modbus RTU (standard), Advantech-ADAM, ARION, HWg-Poseidon
• Power consumption: < 0.5 W – extremely energy efficient
• Housing protection: IP65, sensor connector IP67
• Housing material: ASA (weather resistant), sensor head stainless steel + sintered filter
• Installation: wall mounting with two screws, sensor head mounted directly in pipeline
• Recommended calibration interval: 12 months

Perfect for:

• Compressed air dryers (refrigeration dryers, adsorption dryers)
• Compressed air networks in production and food industry
• Pneumatic control and valves
• Paint and coating systems
• Pharmaceutical production and clean rooms
• Energy efficiency monitoring as per ISO 50001

Installation – easy and safe

The T3419P is mounted on the wall with two screws, the compressed air sensor head screwed directly into the air line (G 1/2"). Always release pressure and equalize ambient pressure before removing the sensor head! Wiring is done via spring-loaded terminal blocks – no soldering, no hassle. Thanks to galvanic isolation and high interference immunity of the RS485 line, the device operates perfectly even in electrically noisy industrial environments.

Summary:

• Humidity and temperature transmitter
• Temperature and humidity sensor made of hard anodized duralumin for compressed air up to 25 bar on cable
• Suitable for indoor and outdoor use
• Humidity and temperature sensor on cable
• Measured values also converted to other humidity parameters: dew point temperature, absolute humidity, specific humidity, mixing ratio, and specific enthalpy
• The device is supplied with a temperature and humidity sensor with 1 meter cable.

Scope of delivery:

• T3419P device
• User manual
• Returnable calibration certificate
• Free TSensor software for configuring the transmitter