Pt100 vs Pt1000 RTD Sensors
Two platinum RTD names buyers use when matching a controller input
Pt100 and Pt1000 sensors are both platinum resistance temperature detectors. A Pt100 RTD measures 100 ohms at 0°C. A Pt1000 RTD measures 1000 ohms at 0°C.
Engineers often specify Pt100 or Pt1000 when the sensor must match a PLC input card, transmitter, controller, data logger, or existing machine configuration. Purchasing teams may call the same part an RTD probe, platinum temperature sensor, resistance thermometer, or replacement temperature probe.
Fast selection checks
Pt100 and Pt1000 comparison
| Term | Resistance at 0°C | Why it is specified | Common buyer language |
|---|---|---|---|
| Pt100 | 100 ohms | Widely used industrial RTD format for process probes, thermowell assemblies, bearing sensors, and plant instrumentation. | Pt100 probe, 100 ohm RTD, RTD sensor, platinum RTD |
| Pt1000 | 1000 ohms | Useful where higher resistance improves signal handling for certain control boards, compact systems, or OEM electronics. | Pt1000 sensor, 1000 ohm RTD, Pt1000 temperature probe |
When Pt100 is common
Pt100 RTDs are common in industrial plants, chemical processing, oil and gas, power generation, aerospace test programs, bearing temperature monitoring, and thermowell-mounted assemblies.
When Pt1000 is common
Pt1000 RTDs are often reviewed for OEM equipment, compact electronics, machine builders, and applications where the instrumentation is designed around a 1000 ohm platinum element.
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