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Resistance Thermometers

Resistance Thermometers (RTD)

Resistance thermometers (RTDs - Resistance Temperature Detectors) are industrial temperature sensors that accurately determine temperature by measuring the change in electrical resistance in response to temperature variations. They provide reliable measurements in process control systems, particularly thanks to sensor elements such as PT100 , PT1000 , and Ni100 . Platinum-based RTD sensors are among the most preferred temperature measurement solutions for industrial automation due to their wide operating temperature range, long lifespan, and low measurement error.

At Aktif Inst, we offer various types of resistance thermometer solutions suitable for chemical plants, power plants, food production, pharmaceutical industry, machinery manufacturing, HVAC systems, plastic injection molding machines, boiler systems, process tanks, and automation applications.

Areas of Application

Resistance thermometers are widely used in the following sectors:

  • Food and beverage facilities
  • Chemical and petrochemical industry
  • Water and wastewater treatment plants
  • Steam boilers
  • Heating and cooling systems
  • power plants
  • Iron and steel plants
  • Paper and textile factories
  • Plastic and rubber production
  • Machine manufacturing
  • Industrial process automation

With different casing diameters, probe lengths, connection heads, and protection classes, you can easily select the RTD temperature sensor best suited to your application.

Socket-mounted resistance thermometer
Aktif Instruments
Socket-mounted resistance thermometer
Connection: R1/2” - Length: 10mm...500mm - Sensor: 1xPT100 - Material: SS316 - Diameter: 6mm/8mm/10mm
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PT100 and PT1000 Resistance Thermometer Selection

When selecting a resistance thermometer, the temperature range to be measured, process pressure, ambient conditions, connection type, and desired measurement accuracy should be considered. The most commonly used sensor type, the PT100 , is a platinum RTD element with a resistance of 100 Ω at 0°C. The PT1000 offers a resistance of 1000 Ω at 0°C, allowing for lower errors, especially over long cable distances. Both sensors provide high accuracy and stable measurement performance.

Within Aktif Inst;

  • PT100 Resistance Thermometer
  • PT1000 Resistance Thermometer
  • Head-Type Resistance Thermometer
  • Wired Resistance Thermometer
  • Screw-type RTD Sensors
  • Flanged Resistance Thermometers
  • Mineral-isolated RTD Sensors
  • High Temperature Resistance Thermometers
  • Custom-made process temperature sensors.

There are many different product options available, such as these.

Our technical team provides application-specific engineering support to help you select the right resistance thermometer for your needs. Our products are manufactured to high quality standards and ensure long lifespan, accurate measurement, and reliable process control.

Advantages of Resistance Thermometers

  • High measurement accuracy.
  • Long-term stable operation
  • Wide temperature measurement range.
  • PT100 and PT1000 options
  • 2-wire, 3-wire, and 4-wire connection options.
  • Stainless steel protective case
  • Threaded, flanged or straight type process connections.
  • Full compatibility with PLC, SCADA, DCS and temperature transmitters.
  • High durability in industrial environments.

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