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PT-100 platinum resistance thermometers (PRTs) serve an important role in both cryogenic research and industrial cryogenics applications.
Many cryogenic research platforms also include high-temperature capabilities, extending hundreds of degrees above room temperature. These platforms need temperature sensors that can both measure and survive these extreme temperatures. With a useful temperature range of 14 to 873 K, platinum sensors are invaluable for this application.
Note: Platinum sensors lose sensitivity below 14 K. For temperatures below this, please see the sensor selection guide, as there are sensor options for lower temperatures, though there are none that can also exceed a 500 K maximum temperature.
The production and transport of many liquid cryogens (liquid nitrogen in particular) often see platinum sensors as the sensor of choice for temperature monitoring. Their bolt-down package option and interchangeability options allow multiple sensors to be used with a single temperature curve, making them simpler to implement and maintain.
This item must be authorized for sale to the end user, therefore, it is a conditional sale of the manufacturer's authorization.
This item is about a calibrated platinum sensor. See also the cheaper uncalibrated platinum sensors fitted to the calibrated sensor.
No sale of uncalibrated platinum sensors will be made without supplying the corresponding calibrated sensor.
Standard curve IEC 751
Recommended excitation 1 mA
Dissipation at recommended excitation 100 µW at 273 K
Thermal response time PT-102 & PT-103: 1.75 s at 77 K, 12.5 s at 273 K; PT-111: 2.5 s at 77 K, 20 s at 273 K
Use in radiation Recommended for use in ionizing radiation environments
Use in magnetic field Because of their relatively low magnetic field dependence above 30 K, platinum sensors are useful as control elements in magnetic field applications when some error can be tolerated
Reproducibility1 ±5 mK at 77 K
Soldering standard J-STD-001 Class 2
1 Short-term reproducibility data is obtained by subjecting sensor to repeated thermal shocks from 305 K to 77 K
