COMET P4131 – Pt1000 Temperature Transmitter with 4-20mA Output for 0 to +150 °C

COMET P4131 – Pt1000 Temperature Transmitter with 4–20 mA Output for 0 to +150 °C (±0.4 °C), IP65, galvanically isolated. Ideal for external Pt1000 probes      

The COMET P4131 is a precise Pt1000 temperature transmitter with 4–20 mA output – the ideal solution for reliable temperature measurement using external Pt1000 probes in the range 0 to +150 °C. As a proven industrial transmitter with galvanically isolated current output, it is perfectly suited for both outdoor and indoor applications, such as warehouses, heating, ventilation and air conditioning (HVAC) systems, heat pumps, solar installations, technical rooms, process plants, or mechanical engineering – anywhere Pt1000 sensors are already in use or planned to be installed.

The transmitter linearly converts the Pt1000 signal into a 4–20 mA output for the measuring range 0 to +150 °C with an accuracy of ±0.4 °C. Resolution is 0.1 °C. The output is freely scalable – you can define the desired measuring range and output value via PC (e.g. 4 mA = 0 °C, 20 mA = +150 °C). The weatherproof IP65 enclosure protects against dust and water jets – ideal for outdoor or humid indoor environments (ambient temperature −30 to +80 °C). No external probe included – the P4131 connects directly to your Pt1000 probe (2‑, 3‑, or 4‑wire).

Galvanic isolation protects against ground loops and interference. The transmitter offers long‑term stability and is available with a traceable calibration certificate (according to EN ISO/IEC 17025) – ensuring top quality for critical applications. Power supply 9–30 V DC (typical 24 V) – easily connected via existing HVAC supply or central power source. Its compact design (88.5 × 148 × 39.5 mm) and low weight (approx. 125 g) enable simple wall, pole, or control cabinet mounting.

Why the COMET P4131 is the professional Pt1000 transmitter:

• Pt1000 input 0 to +150 °C – ideal for standard and process temperatures
• Galvanically isolated 4–20 mA output – interference‑resistant and PLC compatible
• High accuracy – ±0.4 °C across the entire range
• Free scaling – configurable via PC (measuring range & output)
• IP65 enclosure – weatherproof for indoor and outdoor use
• Wide supply voltage – 9–30 V DC (typical 24 V)
• Long‑term stable & maintenance‑free – with calibration certificate

Technical data P4131:

• Temperature measuring range (Pt1000): 0 to +150 °C (±0.4 °C)
• Resolution: 0.1 °C
• Output: 4–20 mA, galvanically isolated
• Power supply: 9–30 V DC (typical 24 V)
• Operating temperature: −30 to +80 °C
• Protection rating: IP65
• Dimensions: 88.5 × 148 × 39.5 mm
• Weight: approx. 125 g
• Warranty: 3 years

Perfect for:

• Building automation & BMS systems
• Warehouses & production halls
• Heating, ventilation & air conditioning (HVAC)
• Retrofit of existing Pt1000 probes
• Indoor & outdoor measurement
• 4–20 mA connection to PLC/BMS
• Integration into existing analog systems
• Precise temperature measurement with Pt1000 sensors

Installation & commissioning – done in minutes

Mount the device, connect the Pt1000 probe (2‑, 3‑, or 4‑wire), connect power (9–30 V DC) and the 4–20 mA current loop – done! Configure the output (measuring range & output value) via PC using COMET software. No recalibration required when replacing the device.

Summary:

• Temperature transmitter for Pt1000 sensors
• For indoor and outdoor applications
• For external Pt1000 temperature probes

Delivery contents:

• P4131
• User manual
• Traceable calibration certificate
• External probes are not included