RS PRO 2 wire PT100 Sensor, -50°C min +250°C max, 35mm Probe Length x 6mm Probe Diameter

  • RS 제품 번호 237-1613
  • 제조업체 RS PRO
참조 문서
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COO (Country of Origin): GB
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Platinum Thin Film Sensing Resistors

RS Pro Thin Film Platinum Detector Elements are constructed of a deposited sensing layer of platinum on a ceramic substrate. Thin Film elements offer the advantages of small size and wide choice of resistance values. RS Pro thin film detectors are available as PT100 or PT1000 resistance elements.

Features & Benefits

Quick thermal response while element is protected
Sheathed element in thin stainless steel
2-wire PTFE insulated leads
Ideal for surface measurement
Suitable for immersion applications
Small size

What is an RTD

An RTD is a type of temperature sensor based on the correlation between metals and temperature. As the temperature of a metal increases so does its resistance to the flow of electricity. This resistance can be measured and converted to a temperature reading. In a Pt100 RTD, the ’Pt’ stands for platinum (platinum wire or film) and ’100’ means that the temperature sensor has a resistance of 100 Ohms at 0°C. Platinum is the most reliable metal due to its linear resistance to temperature relationship over a large temperature range.

What is a Pt100 Stainless Steel Sheathed Sensor?

A Pt100 stainless steel sheathed sensor is designed to measure the temperature on surfaces. The temperature sensor element is embedded inside a stainless steel sheath with a flat sensing surface which is attached to the application surface. The other end of the sensor is terminated by 2 wire tails which are connected to the temperature measuring equipment.

Features and Benefits

• High stability sensing element with a precision output
• IEC 60751 Class B accuracy/tolerance
• Flat stainless steel sheath for sensor element protection and measuring surface temperatures
• Temperature measurement range of -50 to +250°C
• Teflon insulated leads for thermal and electrical insulation, impact strength and protection against moisture, corrosion and abrasive chemicals even in extreme temperatures


These stainless steel sheathed PRT surface sensors with their compact and versatile design are suitable for use in a wide range of applications including:

• Air conditioning and refrigeration
• Chemical industry
• Plastics processing
• Stoves and grills
• Air, gas and liquid temperature measurement
• Exhaust gas temperature measurement
• Food processing
• Laboratories

Frequently Asked Questions

How Does a PRT Temperature Sensor Work

The PRT temperature sensor works by placing the sensor element (or process end) into the equipment or process that requires temperature measurement. As the temperature of the platinum resistance thermometer increases it’s resistance to the flow of electricity increases. For every increase per degree of temperature the electrical resistance also changes by a set ratio, this is called the temperature coefficient. For platinum, this ratio is .00385 ohm/ohm/°C which means for a Pt100 with a 100 ohm resistance the increase in resistance per degree of temperature would be 0.385 ohms. The total resistance reading can, therefore, be measured and converted into temperature.

How is the Resistance Measured?

The resistance generated by the temperature sensor is measured by passing current through one of the wires to produce a voltage. This voltage is then measured using a suitable bridge or voltmeter and the resistance calculated in ohms using Ohm’s Law (R=V/I). Once the resistance is known you can convert it to a temperature reading using a calibration equation or a Pt100 table. A temperature measurement device or calibrator can also be connected to the leads of the probe that will automatically convert the measured resistance into a temperature reading.

Sensor Type PT100
Probe Length 35mm
Probe Diameter 6mm
Minimum Temperature Sensed -50°C
Maximum Temperature Sensed +250°C
Termination Type Lead Wire
Cable Length 1m
Probe Material Stainless Steel
Number Of Wires 2
Accuracy Class B
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