What is a Pt100 probe?
A Pt100 probe is an assembly composed of an RTD element, a sheath, a lead wire, and a termination or connection. The Pt100 is a temperature sensorthat contain a resistor that changes resistance value as its temperature changes.
The Termination
Pt100 probes may be terminated in a connection head, quick disconnect, terminal block, or extension wire. PreciseHeater’s standard terminations are pictured on product pages. Other termination styles are available upon special request. For something other than standard products, please contact our sales team to submit a full description and/or sketch of your desired version.
The Lead Wire
Lead styles and RTD extension cables are offered in one of four configurations. Style 2 is PreciseHeater’s standard. Be sure to select the configuration that is compatible with your instrumentation.
The Sheath
The sheath, a closed end tube, immobilizes the element, protecting it against moisture and the environment to be measured. The sheath also provides protection and stability to the transition lead wires from the fragile element wires. OMEGA’s standard sheaths are 3 mm (1/8") and 6 mm (1/4") O. D. 304 stainless steel tubes. Other O.D.’s and materials are available upon request.
The Element
The standard PreciseHeater® RTD probe is made with a 100 ohm platinum European curve element (á = 0.00385).
Temperature Rating
PreciseHeater’s "PR" style RTD probe assemblies are rated for use in temperatures up to 600°C (1110°F). The "PRTF" style probes are rated up to 260 or 500ºC depending on construction Temperature limitations may be placed on termination styles due to the wire insulation used. The maximum temperature rating available on special order is 750°C (1380°F). If probe is intended for high temperature use, please request a quotation.
OMEGA stocks a broad line of Pt100 probes for immediate delivery. Many special assembly probes are available for shipment within two weeks of receipt of your order. Please consult Sales Department for further details on your special needs.
