Smart PSxHub

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

The growth of individualisation in the packaging industry is leading to ever smaller batch sizes. Moreover, customer wishes and specifications are creating challenges that require flexible machine solutions. Positioning systems automate format changes in machines with minimal changeover times and high repeatability. This dramatically reduces production downtime. With more than 25 years of experience in integrated drives, halstrup-walcher is a specialist in positioning systems for format changeover in machines.

To provide optimum support for machine builders, halstrup-walcher has developed a flexible modular system with a wide range of variants. This allows each application to be equipped with the correct drive. In its intelligent drives, the motor, motor control unit, bus communication and an absolute measuring system without battery are already integrated. These are complemented by a variety of monitoring, control and feedback functions. The PSx 3-series, which has been established on the market for many years, is based on durable and robust EC motors. The electric drives can also be provided with an NRTL certificate, which means they are certified compliant with UL, CSA and ANSI testing standards in the United States and Canada. The PSD product range uses stepper motors, which can also be used without gears and achieve higher speeds.

The hollow shaft allows the drives from both these product ranges to be mounted on the spindle without a coupling. This makes it extremely simple to upgrade machines by automating systems that previously relied on handwheels for format changeover. A range of modules are available to allow the customer to select the appropriate IP protection class for their application. With torques of 1.. 25 Nm, the compact drives can even adjust larger masses, supported by gearboxes integrated into the drive and the appropriate spindle pitch. The positioning systems have interfaces with all common buses, including IO-Link, to ensure easy integration into machine control systems. The manufacturer offers various description files and function modules for this purpose. halstrup-walcher’s extensive product portfolio offers machine builders the tools they need to meet the challenges of flexible machine design – both today and in the future.