RTDs, resistance temperature detectors, are usually made of highly pure platinum metal. Their resistance varies in direct and repeatable relationship to temperature. RTD platinum temperature sensors have long-term stability and tight tolerance over a wide temperature range. They are used for applications in variety of electronic instruments, white goods, HVAC, energy generation industries and machinery controls. The operating temperature of an RTD is greater than a ceramic thermistor and the changes from one degree to the next are small compared to a thermistor.

Platinum (thin-film) RTD sensors

Wide operating temperature range, high-temperature capability, and a repeatable temperature vs. resistance response makes platinum metal an ideal choice for high-reliability temperature sensing applications. Platinum temperature sensors utilize a basic property of platinum metal--the electrical resistance increases with increasing temperature (Positive Temperature Coefficient). This property is consistent and measurable, allowing for the manufacture of precision temperature sensors.  

To exploit these properties, the platinum metal is fabricated into a practical form that is rugged, miniaturized, and easily interfaced with instrumentation. The most popular type of sensor, the platinum thin-film element, consists of a very thin layer of platinum applied on a ceramic substrate, and protected with a thin layer of glass. The addition of protective housings allows the platinum sensor to be used in conditions considered extreme for other types of temperature sensors.

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RTD Temperature Sensor, PT100 to PT 1000: Platinum Thin Film RTD Element

Sensor Scientific, Inc. Platinum Thin Film RTD Elements are fabricated using state-of-the-art thin film processing techniques, resulting in an element of exceptional quality and stability. The wide choice of resistance, tolerance, and size options allows for complete design flexibility.

RTD elements are available with extension leads, and incorporated in complete temperature probe assemblies. Please contact Sensor Scientific for additional information.

  • Available in 100, 500, 1000, and 2000 ohm resistance values
  • Standard DIN EN 60751, ASTME1137 & non-standard tolerances available
  • Custom 2, 3, and 4 wire extension leads available
  • Custom-Engineered Temperature Probe Assemblies

RTD Temperature Sensor Assemblies: Generally, thin film RTD elements are incorporated into some type of assembly for protection. Extension leads may be attached via soldering, crimping, brazing or welding. The attachment method must be capable of withstanding the intended maximum operating temperature.

RTD Part Numbers

Resistance at 0 Deg C. L W H Part Number Temperature Range Tolerance CLASS
100 3.9 1.5 1 P010BLH FROM -50 TO 400 B
100 2.3 1.9 1 P010BLJ FROM -50 TO 400 B
100 1.7 1.25 0.8 P010BMA FROM -70 TO 500 B
100 2.3 2.1 0.9 P010BMB FROM -70 TO 500 B
100 3.9 1.5 1 P010ALH FROM -50 TO 300 A
100 2.3 2.1 0.9 P010AMB FROM -50 TO 300 A
100 1.7 1.25 0.8 P0103MA FROM 0 TO 150 1/3 din
1000 2.3 2.1 09 P100BMB FROM -70 TO 500 B
1000 1.7 1.25 0.8 P100BMA FROM -70 TO 500 B
1000 3.9 2 1 P100BLL FROM -50 TO 400 B
1000 9.5 1.9 1 P100BLF FROM -50 TO 400 B
1000 3.9 2.1 0.9 P100ALL FROM -50 TO 300 A
1000 2.3 2.1 0.9 P100AMB FROM -50 TO 300 A

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