DIFFERENTIAL PRESSURE GAUGES FOR LOW PRESSURE

Precise pressure gauges from Rixen Messtechnik in use worldwide

The experience gained from more than 50 years of manufacturing measuring instruments allows us to offer you precise pressure measuring instruments. The physical unit of pressure is one of the most important parameters required for monitoring and controlling processes in process plants, laboratories and air-conditioning technology. The precise measurement of the pressure is essential for the success and safety of these processes. When utilizing our pressure gauges, you will benefit from the established measuring principle of the ring balance.

The ringbalance for long-time accurate measurement of low pressures

Our pressure gauges are equipped with a rotating ring, which is filled up to just under half with a sealing liquid. The barrier liquid and a partition wall at the top of the ring limit two chambers which can be pressurized with different pressures via valves.

A calibration weight is attached to the bottom of the ring. The higher pressure shifts the liquid in the direction of the lower pressure. The ring rotates until the weight of the displaced liquid and the calibration weight hold each other in balance. The angle of rotation corresponds exactly to the pressure difference between the two chambers.

Transmitters convert the angle value into an electrical signal that can be used for pressure control or as a limit transmitter.

This measuring principle allows the precise measurement of very small pressure differences.

Since no springs or diaphragms are involved in the process that tend to fatigue or change shape over time, the accuracy of our pressure gauges is maintained over long periods of time.

Pressure gauges according to customer requirements

We manufacture pressure measuring instruments for you, according to your individual requirements. Tell us the device type, the required measuring range and the desired form of auxiliary power.

Our offer includes measuring instruments with analogue or digital display as measuring transducer, pure indicators and devices with limit value contacts as well 
as pressure measuring instruments with built-in three-point stepping controller.

All devices can be used to measure differential-pressure, over-pressure or under-pressure, depending on the connection of thepressure inputs.
For use in areas with a potentially explosive atmosphere, we can offer pressure gauges that are certified according to the ATEX manufacturer guidelines 2014/34 / EU.

In order to maintain and improve the high quality of the pressure gauges, we work according to the current criteria of the ISO9001: 2015 standard so that the German Quality Management Academy GmbH has certified our company according to this standard.