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Pressure measurement technology
Description
Differential pressure transmitters are used to control ventilation and air conditioning systems and to monitor filters. The devices are also used in clean rooms or mini-environments to monitor negative and positive pressures. The renowned measurement technology manufacturer halstrup-walcher offers solutions for numerous areas of application for industrial or standard applications with its differential pressure meters.
Differential pressure transmitters for industrial applications: P 26, P34, P29
The differential pressure transmitters for high requirements work according to the inductive measuring principle. The core piece is a diaphragm made of beryllium bronze. Its deflection is measured without contact using inductive displacement transducers. It sits between two measuring chambers and can thus measure positive and negative differential pressure. The measuring cell does not wear out due to friction or mechanical influences. The material beryllium bronze is very springy. It has excellent long-term stability, good temperature behaviour and very low hysteresis. This makes the high-quality pressure transmitters suitable even for the smallest measurement ranges of a few pascals.
- High precision, fine minimum measurement ranges
- Margin of error: 0.2 % or 0.5 % of max. value (depending on selected option)
- Integrated cyclic zero correction keeps measured values stable even when the environment changes
- High overload protection due to built-in valve.
- Many adjustment and setting options: Measurement ranges freely scalable, square root output signal, relay settings (optional), time constant and zero point correction switch-off.
- In combination with primary elements, these pressure transmitters can also be used for volume flow measurement.
Differential pressure transmitters for standard applications: PU/PI, PS 27, PS 17
The differential pressure transmitters for standard applications work with different measuring cells. Their functions and accuracies are matched to basic requirements. They are the economical alternative for numerous applications.
- Compact pressure transmitters with linear curve
- Minimum measurement range: ± 50 Pa
- Also ± and asymmetric measurement ranges
- Optional LC displays for all 3 pressure transmitters



