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Availability date: 2011-04-11
PT100 Probe EASY-UP 2000.90.520
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|Sealing||40mm bend proof spring between cable and stem|
|Response time||6,5 seconds (normative BS 1904/1984/CEI60751)|
|Immersion material||Steel AISI 304|
|Internal insulation||MgO Magnesium oxide > 20Mohm at 25°C (500Vdc)|
|Sensor||PT100 class B (+/- 0,3°C at 25°C)|
|TTS cable||Glass fiber, operating temperature -200 ... 500°C|
|GSC cable||Silicon rubber, operating temperature -40 ... 250°C|
Temperature measurement by resistance thermometers relies on a property common to all conductors and semiconductors, which is the variation in their electrical resistance in relation to temperature change. PT100 sensor has a resistance of 100 ohms at 0 °C and the coefficient of variation is 0.00385 ohm per degree centigrade. The technology made to meet modern demands in accuracy is based on thin platinum layers on a ceramic substrate (thin-film resistors).
Since the resistance of the sensor is the total of the resistance of the connecting cables (variable with temperature), a three-wire system is used to cancel out the error.
The PT100 Easy-up probes are assigned a numeric code that once inserted allows the Pixsys controllers to automatically set the main operating parameters.