Instruction manual PS11/PK11
6
2
Instrument description
The Type PS11/PK11 pressure transducer is a pneumatic, electronic sensor for
measuring overpressures, vacuum pressures and differential pressures. As well as two
output signals proportional to the pressure, it also offers the option of a floating contact
point. Typical applications include, for instance, the monitoring of filters in air-
conditioning and ventilation ducts. At the heart of the transducer is a pressure
measurement capsule with a beryllium bronze 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 PS11/PK11 pressure transducer is highly robust, it is nevertheless a
precision instrument and should be handled with care. Avoid mounting the
PS11/PK11 in the direct vicinity of any sources of heat or radiation. The instrument
should be mounted vertically on a 35 mm DIN top hat rail not subject to vibration.
The smoothed supply voltage 24 VDC (+20% / -15 %) should be connected at the
terminals indicated in the connection diagram (see below).
The pressure (+) and vacuum (-) ports should be connected to the installed pipes
using short lengths of tubing.
When connecting pressure to the transducer, use the following table to ensure that
the sign of the pressure (+ or -) is correct.
Measuring task
Connect pressure to
Example
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
