Our PR-25CU Copper Tipped RTD Probe combines the ease of use and robustness of our PR-21 RTD and adds a copper tip for improved response time. When trying to measure the temperature of objects like bearings and motors where contact is limited, the copper tip provides improved sensitivity. In thermowells where the contact between the sensor and thermowell bore is limited, copper tipped sensors can provide improved response and accuracy over standard immersion probes.
The ¼” diameter PR-25CU RTD has a response time of approximately 3.25 seconds for 50% response, 4 seconds for 63.2% response and 7.5 seconds for 90% response in water flowing at 3 feet per second. The 63.2% response time is approximately 33% faster than our standard PR-21 M12 Style Immersion RTD, and less than ½ the response time of our High Temperature PR-26 M12 Immersion RTD.
For ease of mounting, the PR-25CU is available with the following mounting thread options:
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-25CU, 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.
When ordering your PR-25CU 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-25CU 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-25CU sensor. There are also wireless transmitter options available.
Metal Parts: 316L Stainless Steel Sheath and Housing, Copper Plug at Tip.
Connector: 4-Pin "A"-Coded M12 Plug Connector
Standard Mounting Threads: 1/2NPT, 3/8NPT, 1/4NPT, M8x1, M10x1, G1/2 BSPP , G1/4 BSPP and Non-Threaded
Standard Probe Diameter: 1/4" and 6mm
Standard Probe Lengths: 6" and 150mm
Sensor: Pt100 (100 Ohms at 0°C, .00385 TCR (alpha)) per IEC 60751
Accuracy: Class A per IEC 60751
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
† All amounts shown in EUR, GBP, or USD Note:Standard; For lengths other than 6", change “-0600” in model number to required length and add $1 per inch greater than 6", (example: 18" = 1800). For 1000 Ω RTD elements change “-100” to “-1000” in model number. For Class B Element, change the “-A” to “-B”. For 3/16" probe diameters, change “-1/4” in model number to “-3/16”, no additional cost. Metric; For lengths other than 150 mm, change “-M150” in model number to required length and add $1 per inch per 25mm greater than 150 mm. For 4.5 mm diameters, change “-M6” in model number to “-M4.5”, no additional cost. Ordering Example: (1) PR-25CUA-3-100-A-1/4-0600-M12 Straight sheath, Class A, 100 Ohm, 1/4, £44.00
Part Number Builder
Build Your Part Number Below
Mounting select from: A for Straight sheath B for Straight sheath with 1/2 NPT mounting C for Straight sheath with 3/8 NPT mounting D for Straight sheath with 1/4 NPT mounting E for Straight sheath with M8x1 mounting thread F for Straight sheath with M10x1 mounting thread G for Straight sheath with G1/2 mounting thread H for Straight sheath with G1/4 mounting thread
RTD select from: 100 for 100 OHM 1000 for 1000 OHM
Class Element select from: A for Class A Element B for Class B Element
Diameter select from: 1/4 for 1/4 in 3/16 for 3/16 in M6 for 6 mm M4.5 for 4.5 mm
Length select from: 0600 for 6 inch Length M150 for 150 mm Length
Note: All combinations may not be valid, check spec sheet for valid part numbers.