P82R Instruction Manual
6
2 Instrument
description
Its root-extracted characteristic curve makes this differential pressure transducer
especially suitable for measuring volume flow in equipment such as air-conditioning
units, fans and ventilation ducts. An optional display allows the operator to read out the
volume flow / flow rate directly on site.
3
Start-up
3.1
Features
Although the P82R 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.
Type of pressure
Connect pressure to
Example
overpressure
+ input port
0...1 kPa
vacuum
- input port
0...- 500 Pa
differential pressure
higher pressure at + port
lower pressure at - port
0…125 Pa, e.g. via a differential
pressure transducer (e.g., a
measuring orifice)
