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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.

When ordering your PR-25AP sensor, don’t forget your extension cable. Omega 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 Omega’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. Omega 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.

Specifications:

• 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