RTD Temperature Sensors

Changes in resistance as its temperature changes.

When a visual indication alone isn’t suitable for your application, you may want to consider using RTD Temperature Sensors or Resistance Thermometers. RTD stands for resistance temperature detector, and it is by using the principle of resistance that this type of temperature sensor operates.

An RTD often consists of a fine metallic wire that is wrapped round a ceramic or glass core. The fine wire must be a pure metal and have an accurate resistance/temperature relationship, therefore platinum, nickel or copper are often used. The term Pt100 is commonly associated with RTD’s used in the process industry. Pt is the chemical symbol for platinum, which has a resistance of 100 Ω at 0°C.

RTD elements are fragile, and are therefore generally housed in a protective probe. They offer accurate readings and are available with either 2-wire, 3-wire or 4-wire wiring configurations.

For more information about MGA Controls range of RTD Temperature Sensors, please contact our team of experts today on +44 (0)1704 898980 or sales@mgacontrols.co.uk they will be able to offer any information you need.

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