Proximity technology can measure vacuum or pressure in containers by
measuring the lid deflection.
How It Works
Proximity technology measures vacuum or pressure in containers with metal closures by
measuring the lid deflection. Proximity technology uses non-contact online inspection method,
when the container passes the sensor, the sensor produces a continuous magnetic field that
monitors the distance between the sensor and the metal lid. The continuous signal is digitally
sampled to produce a merit value of the lid profile. The profile value is then compared to
user-set limits. Containers with lid deflection outside the limits will be rejected.
Proximity Sensor
