Hayashi Denko is a Japanese company and one of the biggest manufacturer of thin film RTD temperature sensors and thermocouple from 1961.
The range of Hayashi products include thin film RTD PT100, PT500 and PT1000 in classes A – B- 2B – 1/3B in dimension 1.6x3.2x1.1mm and 2.0x5.0x1.1mm used for production of thermoresistance probes for HVAC industrial field, for heat metering and temperature compensation.
Among Hayashi Denko products there are also ceramic wire wound RTD temperature sensor and in glass, able to resist at temperature up to +600°C.