PT100 RTD Sensor with M12 Connector

Our RTD Pt100 sensors with M12 connections provide for easy and efficient installation or removal of these sensors for periodic calibration, troubleshooting or replacement. Gone are the days of having to pull extension cables from cable trays in order to calibrate or replace the Pt100 sensor, now you simply disconnect the sensor from the extension cable saving cost and downtime. The Omega PR-21 RTD is a flexible and robust Pt100 temperature sensor constructed with 316L Stainless Steel housings and sheaths for strength and corrosion resistance. These Pt100 sensors include a 4-pin, M12 A-Coded plug connector for easy assembly to patch cables or extension cables, as well as a variety of 'NPT' pipe thread and metric mounting thread options for easy installation into a wide variety of threaded ports. A non-threaded housing option is also available for other types of installations.

For use in thermowells, the PR-21SL Spring-Loaded version of this Pt100 sensor is the preferred solution. The PR-21SL design includes a non-threaded PR-21A style Pt100 probe with a self-gripping spring and 1/2NPT threaded fitting to insure that the probe will contact the bottom of the thermowell bore without damaging the Pt100 sensor. This insures that the sensor length will always be a perfect fit for your thermowell. See the PR-21SL page for additional information.

The mounting thread options on the PR-21 Series Pt100 sensors allow them to be used in a wide variety of applications, including:

• Stand alone immersion Pt100 sensors.
• Installed directly into your product or process using an existing NPT or metric threaded port.
• When combined with our M12-Handle, non-threaded 'A' style PR-21 probes can be used in hand-held sensing applications.
• Other applications using a variety of available compression fittings or other accessories.

These RTD Pt100 sensors can be used in any 2, 3 or 4-wire application by selecting one of the two available wiring arrangements (see the wiring diagrams below) and using only those wires needed for your measurement connection. This allows for simplified, trouble free installation with any existing application. This also allows the PR-21 series Pt100 sensor to be used for a wide variety of replacement applications since it can be connected as-is with just about any measurement or control equipment available when combined with a 4-pin female M12 connector extension or patch cable.

When ordering your PR-21 Pt100 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-21 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-21 Pt100 sensor. There are also wireless transmitter options available.

Pt100 wiring options:

Complete informations can be found in the spec sheet (PDF), see the "Download" section.