Performance Data of BOLA Temperature Probes

4-wire-system - PT 100

Pin configuration of the LEMO® socket/plug
Temperature probe / PT 100
Temperature range: -50°C to +250°C
Specification: DIN EN 60751
Type: Platinum temperature sensor
Class: A
Tolerance: 0,15 + (0,002 x (t))
Typical aberrations:
at 0°C: +/-0,15°C
at 100°C: +/- 0,35°C

2-wire-system - PT 1000

Pin configuration of the LEMO® socket plug
Temperature probe / PT 1000
Temperature range: -50°C to +250°C
Specification: DIN EN 60751
Type: Platinum temperature sensor
Class: A
Tolerance: 0,15 + (0,002 x (t))
Typical aberrations:
at 0°C: +/-0,15°C
at 100°C: +/- 0,35°C

Pin configuration of the Temperature Probe K
Temperature Probe K
Temperature range: 0°C to +300°C
Specification: IEC60584.3:2007
Type: Type K Thermocouple
Tolerance: +/- 0,15° C

Difference between PT 100 and PT 1000

Both, PT 100 and PT 1000 probes are resistance thermometers but have a different coefficient of temperature. Depending on the platinum used, PT 1000 probes have a coefficient of temperature of 3,85 Ohm/°C and PT 100 probes of 0,385 Ohm/°C. This means, at 0 °C the platinum of the PT 1000 sensor has a resistance of 1000 Ohm, at 1 °C of 1003,85 Ohm and so on. A PT 1000 probe has a higher gradient and thus offers a higher resolution. The inherent resistance of the connecting cable does not influence the measuring results of PT 1000 probes. For PT 100 probes, the measuring device compensates the inherent resistance of the connecting cable. Therefore not all devices can handle both probe types.