Honeywell’s STT 3000 family of microprocessor-based smart temperature transmitters includes the STT250 and the STT350 offering high performance and advanced functionality.
 
The STT250 units offer competitive performance in a more compact module and with a wider range of smart communications protocols.

STT250 can be supplied complete with thermocouple or RTD sensors and with any of a wide range of thermowells. The sensors are of Mineral Insulated (MI) construction with lengths of up to two meters available. For the direct head mount installation the sensor is supplied with a mounting plate for STT250 module attachment and fixing screws to provide the spring loaded attachment to the housing. For EEx d IIC T6 applications a flame trap is included between the sensor and sensor entry of the housing.