An RTD (Resistance Temperature Detector), also known as a Resistance Thermometer, is a temperature sensor that is best suited for processes with temperatures between -200ºC to 600ºC and require a high degree of accuracy. The RTD is composed of metallic elements whose change in resistance is a function of temperature. In operation, a small electrical current is passed across the element, and the voltage, which is proportional to resistance, is then measured and converted to units of temperature calibration.
The most common RTDs are made of platinum, called a PRT (platinum resistance thermometers), because of its linear resistance-temperature relationship and its chemical inertness. RTD’s are slowly replacing the use of thermocouples in many industrial applications due to higher accuracy and repeatability of the resistance thermometer.
Features of an RTD Sensor:
- High accuracy
- Low drift
- Wide operating range
- Suitable for precision applications
- Excellent long-term stability
- -60ºC to 250ºC operation for Nickel
- -200ºC to 600ºC operation for Platinum
- Available in standard DIN class accuracies
Integrity Calibration Services sells RTDs for many industry applications. From thin film and wire-wound to three wire RTDs, PT100 RTDs, PT1000 RTDs, and Ni120 RTDs, we have the right sensor for your process. We can facilitate an RTD at all element curves using Platinum, Nickel, or Copper.
All you need is to answer a few simple questions from us about your particular process and we will help find a solution or help build a custom RTD sensor assembly that fits your process perfectly. It might include connection heads, thermowells and/or transmitters or other temperature sensor accessories depending on your needs.
One other point to note is that Integrity Calibration Services is a calibration lab. This means that we are able to test and calibrate your RTDs completely before they even enter your facility. Our technical staff has over 70 years of experience calibrating temperature devices with uncertainties as low as +-(0.05C).