Integral Cable RTD Probes with Class A Accuracy Sanitary

1/4" Diameter Pt100 Probe Design for Standard Duty, or 3/8" to 3/16" Stepped Probe Design For Heavy Duty Applications. Probe Lengths of 3", 4", 5" and 6" Available From Stock, Other Lengths Also Available. Process Connection is a 1½"-16 AMP Tri-Grip™ (Tri-Clamp® Compatible) Standard, Other Sizes and Styles Available. Flanges Conform to ASME BPE-2007 Standard to Assure Trouble Free Interchangeability. Pt100 Sensor Can be Used in Sanitary, Hygienic and Clean-In-Place Food, Dairy, Beverage and BioPharmaceutical Processes. 316L SS Wetted Surfaces with 32 µinch or Better Surface Finish. 4-Conductor, 120" Long PFA Cable with Molded Nylon Strain Relief Standard. -50 to 200°C Temperature Range. 4-Wire Pt100 Class A Platinum RTD Sensor (100.00±0.06Ω at 0°C) Standard. Compatible with 3-Wire and 2-Wire Pt100 RTD Instruments and Transmitters. More

Item# (PN): PRS-3-100-CB Shipping and Payment

This OMEGA Sanitary Temperature Sensor containes a PT100 Platinum RTD element and is designed for use in Food, Dairy, Beverage and BioPharmaceutical Clean-In-Place (CIP) type applications. The Pt100 sensor includes a 1½" 16AMP process connection that conforms to ASME BPE-2007 for easy installation using industry standard gaskets and clamps. Standard Duty sensors are available with ¼" diameter probes, and Heavy Duty sensors are available with a stepped ³⁄8" to ³⁄16" diameter probe. This Pt100 sensor is provided with a 120" long, 4-conductor, #26AWG stranded nickel plated copper, PFA insulated and jacketed cable with a strain relief for convenient connection to control or monitoring equipment.

Food process hygienic Pt100 temperature sensors can be used to aid food safety inspection compliance and verification of time temperature control. Combined with a chart recorder model CTXL you can temperature monitor a CCP ( Critical Control Point) or sanitation time and move toward a HACCP (Hazard Analysis Critical Control Point) compliance plan.

In addition to the standard 1½-16AMP process connection, these Pt100 can be provided in the following sizes and styles:

Process Connection	Model Number Code
3/4"-16AMP	-B1-
1" and 1½"-16AMP	-D1-
2"-16AMP	-E1-
2½"-16AMP	-F1-
3"-16AMP	-G1-
4"-16AMP	-H1-

If you need a process connection that is not listed above, please contact our sales department for availability.

These OMEGA Pt100 sanitary sensors are supplied standard as 4-wire assemblies with two red wires and two white wires. When used in 3-wire applications, cut off one white wire making sure that it will not contact any terminals or metal surfaces (note: twisting the two white wires together will reduce the lead wire resistance on one side of the sensing element by half adversely affecting the accuracy of the reading). When used in 2-wire applications, cut off one white wire and one red wire (note: in 2-wire applications, twisting the two same-colored wires together at the terminals will not adversely affect your Pt100 sensor accuracy since both wires will be affected by the reduction in resistance).

These sensors are also available in Thermistor and Thermocouple styles to accommodate any process input requirement.

The online configurator may not contain all available options. If you do not find what you are looking for, please contact us.

Download

PRS-3-100-CB_en_manual.pdf (pdf, 253.5 kB)

RTD Pt100 vs Thermocouple

It is not practical to compare RTDs (Pt100 and others) and thermocouples generally. However, if we compare their performance in terms of specific criteria, we can see which is best suited for specific applications. Thermocouples are best for working at high temperatures. New manufacturing techniques have improved the measurement range of RTD probes, but more than 90% of RTDs are designed for temperatures below 400°C.

In contrast, some thermocouples can be used at up to 2500°C. Thermocouples are generally cheaper than RTDs...

Origin Story of the RTD / Pt100

The same year (1821) that Thomas Seebeck made his discovery about thermoelectricity (Seebeck effect, see thermocouples), Sir Humphrey Davy announced that the resistivity of metals showed a marked temperature dependence. Fifty years later, Sir William Siemens proffered the use of platinum as the element in a resistance thermometer. His choice proved most propitious, as platinum is used to this day as the primary element in all high-accuracy resistance thermometers, Pt100, Pt1000 etc.

In fact, the Platinum Resistance Temperature Detector, or RTD Pt100, is used today as an interpolation standard from the oxygen point (-182.96°C) to the antimony point (630.74°C)...

What are RTD temperature sensors?

RTDs or Resistance Temperature Detectors, are temperature sensors that contain a resistor that changes resistance value as its temperature changes. The most popular RTD is the Pt100. They have been used for many years to measure temperature in laboratory and industrial processes, and have developed a reputation for accuracy, repeatability, and stability.

Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core. The element is usually quite fragile, so it is often placed inside a sheathed probe to protect it...

* Fields marked with an asterisk are required