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Air Temperature RTD Probe with M12 Connector
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
PR-25AP series
  • Pt100 Wire Wound RTD with Class A Accuracy Standard (Tighter Accuracy Options Available)
  • Resistance vs. Temperature and Accuracy per IEC 60751
  • Temperature Range: -100 to 250°C (-148 to 500ºF)
  • Probe Will Withstand 400 psi (27.6 bar) Differential Pressure Between Airstream and Ambient Conditions
  • 316L Stainless Steel Probe and Housing with Vent Holes Around Element
  • M12, 4-Pin, A-Coded Plug Connector for Easy Installation
  • Available With or Without NPT Mounting Threads
  • Non-Threaded Probe Can be Used with Optional Handle for Hand-Held Measurements
  • Wide Selection of M12 Extension Cables Available.
 Manuals (contact with email : [email protected])


Our PR-25AP RTD Air Probe combines the availability of the high accuracy sensor options found in our Ultra-Precise RTD probes with the convenience and reliability of our M12 enabled PR-21 probes. The PR-25AP offers RTD accuracies of Class A, AA (formerly 1/3DIN) and 1/10DIN sensing elements with the ease and reliability of the M12 connection.

The PR-25AP RTD is also designed to provide a barrier to airflow between the air stream and the ambient conditions that has been tested to 400 psi with no leakage. The probe is constructed with a 316L stainless steel housing and sheath for strength and corrosion resistance. For ease of mounting, the PR-25AP is available with the following mounting thread options:
  • 1/2NPT
  • 3/8NPT
  • 1/4NPT
  • Non-Threaded Housing

  • The mounting thread options above allow the probes to be used in a wide variety of applications, including:
  • As stand-alone immersion sensors.
  • Installed directly into your product or process using an NPT threaded port.
  • The non-threaded design can be combined with our M12-Handle accessory to convert it for hand-held sensing applications.
  • Other applications using a variety of available compression fittings or other accessories.

  • The PR-25AP, like all of our M12 enabled probes, comes standard with a 4-wire, 4-pin, M12 A-Coded plug connector for easy assembly to extension cables. This allows it to be used in any 2, 3 or 4-wire measurement system for maximum flexibility. For 1/10DIN accuracy we highly recommend using a 4-wire measurement to take maximum advantage of the tight accuracy option.
    TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers

    When ordering your PR-25AP sensor, don't forget your extension cable. trodeks offers a wide selection of extension cables including over molded PVC, Polyurethane and Silicone cables, as well as customized cables in a variety of materials with optional stainless steel braid or hose for improved mechanical protection, and a wide selection of instrument connections.

    Connect your PR-25AP RTD sensor to one or more of trodeks's wide variety of in-stock controllers, data loggers, transmitters, hand held thermometers, PLCs, or other measurement & control products to complete your measurement or control system. trodeks offers a selection of programmable and fixed range transmitters that can be connected directly to the M12 connection of your PR-25AP sensor. There are also wireless transmitter options available.

  • Metal Parts: 316L Stainless Steel Sheath and Housing.
  • Connector: 4-Pin "A"-Coded M12 Plug Connector
  • Standard Mounting Threads: 1/2NPT, 3/8NPT, 1/4NPT, and Non-Threaded
  • Standard Probe Diameter: 1/4"
  • Standard Probe Lengths: 6", 12” and 18”
  • Sensor: Pt100 (100 Ohms at 0°C, .00385 TCR (alpha)) per IEC 60751
  • Accuracy: Class A, AA (formerly 1/3DIN) per IEC 60751 and 1/10DIN
  • Temperature Range: -50 to 250°C Except for the Connector Which is 85°C Max
  • Insulation Resistance: 100 Megohms Minimum at 100VDC at Room Ambient

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