PIZ Instruction Manual
6
2
Instrument description
The PIZ pressure transducer is a pneumatic, electrical sensor for measuring
overpressures, vacuum pressures and differential pressures. Typical applications
include, for instance, pressure measurements in air-conditioning and ventilation ducts.
At the heart of the transducer is a pressure measurement capsule with a beryllium
bronz membrane spring, which is displaced by the pressure difference between the two
chambers of the measurement capsule. Inductive displacement transducers measure
membrane deflection without contacting the membrane. The instrument has no
frictional parts or parts subject to mechanical wear.
3
Start-up
3.1
Features
Although the PIZ pressure transducer is highly robust, it is nevertheless a precision
instrument and should be handled with care. Avoid mounting the instrument in the
direct vicinity of any sources of radiation or heat, such as heaters, as this could result
in measurement errors. Ideally, the instrument should be mounted vertically on a wall
not subject to vibration. Pressure (+) and vacuum (-) ports should be pointing down in
order to prevent any condensation from entering the measurement cell.
When connecting pressure to the transducer, use the following table to ensure that
the sign of the pressure (+ or -) is correct.
overpressure / pos. differential
pressure
+ input port
0...1 kPa
vacuum / neg. differential pressure - input port
0...- 500 Pa
symmetrical overpressure /
vacuum
+ input port
200 Pa
