ULTAS REFERENCE PROBES
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The ULTAS range of temperature sensors are a premium range of PT100, Thermistor, thermocouple and specialist sensors. All sensors are 100% tested by checking their temperature reading at 0°C and then temperature cycling them before being checked again at 0°C for drift. The sensors are then issued a UKAS traceable certificate of conformity. 
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Semi-Standard  and Reference Sensors

ULTAS PT 450 & 250 - Semi Standard PT100

High Humidity and Immersible Sensors

ULTAS i200