Screw-in RTD thermometers ET521 and ET522 with replaceable measuring insert and terminal head are preferred for measuring temperatures in liquids and gases. Applications include HVAC and refrigeration, heating installations, ovens, furnaces and plant engineering, as well as process technology.

- For temperatures from -50..+500 �C
- As single or twin resistance thermometer
- Pt100, Pt500, Pt1000, PTC1000 or NTC sensor
- Selection of DIN B types and miniature terminal heads
- Integrated thermowell with AISI316 s/s thread-connection
- Transmitter options with outputs 4-20 mA and RS485 Modbus RTU.