COMET P3110E – 4-20mA Transmitter for Temperature -30 to +80 °C, Humidity 0–100 %RH

COMET P3110E – Affordable 4-20mA Transmitter for Temperature –30 to +80 °C, Humidity 0–100 %RH (±3 %RH), Dew Point, Galvanically Isolated, IP65 

The COMET P3110E is the cost-effective 4-20mA transmitter for temperature and relative humidity – the economical solution for building automation, warehouse monitoring, climate chambers, ventilation systems, cold rooms, or simple process control. With integrated sensors and a galvanically isolated current output (4-20 mA), it is ideal for connection to PLCs, BMS systems, controllers, or recorders – even over long distances without signal loss. Perfect when high precision is not essential but reliability and easy integration are required.

The internal temperature sensor measures from –30 to +80 °C (±0.6 °C) and humidity from 0 to 100 %RH (±3.0 %RH from 5–95 % at 23 °C). The dew point is calculated automatically. The output is freely scalable – you define via PC the measuring range and which parameter (T, RH, or dew point) is transmitted. The weatherproof IP65 housing (electronics) and IP40 sensor make the P3110E a reliable partner for indoor and outdoor applications (–30 to +80 °C). The 75 mm probe allows good positioning in airflows or ducts.

The 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) – solid quality at an affordable price. Power supply 9–30 V DC (typically 24 V) – simple and flexible. No external probe required – everything in one device for quick installation and minimal error sources.

Why the COMET P3110E is the best economy transmitter:

• Very affordable & economical – perfect value for money
• Galvanically isolated 4-20 mA output – interference-free & PLC-compatible
• 2-in-1: Temperature + Humidity – dew point calculated automatically
• 75 mm probe – easy positioning in airflows
• IP65 housing – weatherproof for indoor & outdoor use
• Free scaling – configurable via PC (measurand & range)
• Wide power supply range – 9–30 V DC (typ. 24 V)
• Long-term stable & maintenance-free – with calibration certificate

Technical data P3110E:

• Temperature range: –30 to +80 °C (±0.6 °C)
• Humidity: 0 to 100 %RH (±3.0 %RH from 5–95 % at 23 °C)
• Resolution: 0.1 °C / 0.1 %RH
• Output: 4-20 mA, galvanically isolated
• Probe length: 75 mm
• Power supply: 9–30 V DC (typ. 24 V)
• Operating temperature: –30 to +80 °C
• Protection: IP65 (electronics), IP40 (sensor)
• Dimensions: 88.5 × 170 × 39.5 mm
• Weight: approx. 150 g
• Warranty: 3 years

Perfect for:

• Building automation & BMS systems (basic applications)
• Warehouses & production halls
• Heating, ventilation & air conditioning
• Cold storage & warehouses
• 4-20 mA integration with PLC/BMS
• Budget projects & standard measuring points
• Integration into existing analog systems
• Cost-effective room climate monitoring

Installation & commissioning – done in minutes

Mount the device on a wall or duct, connect power (9–30 V DC) and 4-20 mA loop – done! Configure the output via PC (COMET software) for measuring range and signal value. No calibration effort required when replacing the device.

Summary:

• Cost-effective transmitter for ambient temperature and relative humidity
• Suitable for indoor and outdoor use
• Integrated sensors for relative humidity and temperature

Package contents:

• P3110E
• User manual
• Traceable calibration certificate