The testo 6351 pressure transmitter for differential pressure enables measurements in the 50 Pa to 2,000 hPa measuring range. A particularly outstanding feature of the transmitter is the automatic zero-point adjustment, which ensures high accuracy and long-term stability. testo 6351 pressure transmitter for differential pressure – the applications Differential pressure monitoring between rooms; optional: simultaneous measurement of ambient temperature and humidity Monitoring of drying processes, control of differential pressure, volume flow and flow velocity in critical air conditioning technology (air conditioning and ventilation systems)