COMET P4161 – Pt1000 Temperature Transmitter with 4-20mA Output for 0 to +250 °C

COMET P4161 – Pt1000 Temperature Transmitter with 4–20 mA Output for 0 to +250 °C (±0.4 °C), IP65, galvanically isolated. Ideal for external Pt1000 probes 

The COMET P4161 is a precise Pt1000 temperature transmitter with 4–20 mA output – the ideal solution for reliable high‑temperature measurement using external Pt1000 probes in the range of 0 to +250 °C. As a proven industrial transmitter with galvanically isolated current output, it is perfectly suited for process plants, dryers, heaters, ovens, heat exchangers, exhaust systems, machinery, the food industry, or anywhere Pt1000 sensors are already used or intended for high‑temperature applications.

The transmitter linearly converts the Pt1000 signal into a 4–20 mA output for the measuring range 0 to +250 °C with an accuracy of ±0.4 °C. The resolution is 0.1 °C. The output is freely scalable – you can define the desired measuring range and output values via PC (e.g. 4 mA = 0 °C, 20 mA = +250 °C). The weatherproof IP65 enclosure protects against dust and water jets – ideal for industrial environments (ambient temperature −30 to +80 °C). No external probe included – the P4161 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 high‑temperature applications. Power supply 9–30 V DC (typical 24 V) – connection is simple using an existing power line or central supply. The compact design (88.5 × 148 × 39.5 mm) and low weight (approx. 125 g) allow easy installation on a wall, control panel, or machine.

Why the COMET P4161 is the professional Pt1000 high‑temperature transmitter:

• Pt1000 input 0 to +250 °C – ideal for process and high‑temperature applications
• Galvanically isolated 4–20 mA output – interference‑proof and PLC compatible
• High accuracy – ±0.4 °C across the entire range
• Free scaling – configurable via PC (measuring range and output)
• IP65 enclosure – weatherproof for industrial and outdoor environments
• Wide supply voltage – 9–30 V DC (typically 24 V)
• Long‑term stable and maintenance‑free – with calibration certificate

Technical data P4161:

• Temperature measuring range (Pt1000): 0 to +250 °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:

• Process and industrial installations
• Dryers, ovens & heat exchangers
• Heating, ventilation & air conditioning (HVAC)
• Retrofitting existing Pt1000 probes
• High‑temperature monitoring
• 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 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:

• P4161
• User manual
• Traceable calibration certificate
• External probes are not included