Differential Pressure Sensors  Manufacturers, Traders, Suppliers

Measuring, controlling, regulating and evaluating - when it comes to pioneering automation and digitalisation technology, the ifm group of companies is a pioneer and partner. Since the company was founded in 1969, ifm has been developing, producing and selling sensors, controllers, software and systems for industrial automation and digitalisation worldwide. Today, the ifm group of companies is one of the global industry leaders with around 9,055 employees.

• Transmitters or sensors with integrated evaluation electronics. * Overload-proof and long-term stable thanks to ceramic measuring cell. * Measuring range up to 600 bar. * Variable process connection technology through optional adapters. * EPS interface for external programming.

* Transmitters or sensors with integrated evaluation electronics. * Overload-proof and long-term stable thanks to ceramic measuring cell. * Measuring range up to 600 bar. * Variable process connection technology through optional adapters. * EPS interface for external programming.

Pressure sensors with ceramic measuring cell The devices with a ceramic measuring cell are designed for the highest demands with nominal pressures from -1 to 600 bar by means of an optimized support in the process sensor. These sensors are extremely robust against mechanical influences and operate completely wear and tear and fatigue-free. The resulting long-term stability ensures safe operation and reliable measurement results over 100 million pressure cycles. Pressure sensors with stainless steel measuring cell The devices with strain gauges in thick-film technology on a stainless steel measuring cell are characterized by a very compact and robust design. The seal-free welded stainless steel measuring cell ensures a high degree of safety. The three to thirty-fold burst pressure, depending on the selected measuring range of the device, and the equally high shock and vibration resistance underline the maximum operational reliability of ifm pressure sensors with stainless steel measuring cell. Pressure sensors with silicon measuring cell The devices with piezoresistive silicon measuring cell are in no way inferior to sensors with the ceramic measuring cell used up to now in terms of accuracy. Thanks to their design, they allow differential pressure measurements without a second connected pressure transducer. System solutions In addition to the large product range of pressure sensors ifm also offers special and reliable system solutions. Special devices, based on our proven pressure sensors, offer even greater application and usage possibilities. The PC-based communication and software solutions make the handling of ifm pressure sensors even more convenient. Level sensors In addition to the conventional pressure sensors for hydrostatic level measurement ifm now also offers level sensors for level measurement. This design opens up numerous new areas of application, for example level measurement in wells, flowing waters, boreholes and sewage plants. The high accuracy and long-term stability ensure long-term operation in these applications. All components of the level probe that come into contact with the medium are made of stainless steel (1.4571).

Pressure sensors (also known as pressure cans, pressure load cells or pressure transmitters) differ, apart from the design and the output signal, mainly in the type of reference pressure for pressure measurement: here there are pressure sensors for relative pressure, absolute pressure and differential pressure transducers.
In a pressure sensor for relative pressure, the back of the sensor element is exposed to the air pressure surrounding us. In a typical setup, a small tube leads from the back of the sensor to the plug or through the connection cable. These pressure sensors have the advantage that fluctuations in air pressure are not reflected in a fluctuation of the output signal.
The pressure sensor for absolute pressure has a small chamber on the back of the sensor membrane which is completely evacuated, i.e. the chamber is 0 bar absolute. These pressure sensors show the current air pressure, which is typically between 950 and 1050 mbar, as long as no measuring pressure is present. Changes in air pressure (e.g. due to a rising high or low) therefore lead to a change in the measuring signal without changing the actual pressure value. A special type of absolute pressure sensors are barometers, which measure the ambient air pressure very precisely. A special form of the pressure sensor is the so called sealed gauge version. Here, the reference chamber is sealed tightly at approx. 1000 mbar. These pressure sensors are mainly used for measuring ranges >10 bar. Closing the reference chamber prevents, for example, aggressive gases from entering the reference chamber and causing corrosion.
Another special form of pressure sensors are so-called differential pressure sensors or pressure transducers. Here the back of the sensor membrane is mechanically constructed in such a way that it can be used as an independent pressure connection for pressure measurement. A pressure sensor (pressure cell or pressure load cell) in this version therefore indicates zero at the same pressure on the input and reference sides. Differential pressure sensors differ substantially in their mechanical construction. Here there are simple designs which, for example, only allow dry gases for the reference side or also high-quality pressure transmitters which allow an overload (even on one side) of more than 200 bar at a small nominal measuring range of 35 mbar.
Pressure transmitters often have a very robust mechanical design and have a 4...20 mA output signal which is common in process measurement technology.

TURCK pressure sensors detect relative or absolute pressures in liquids and gases. The PS series offers pressure sensors with display and different output variants (switching and analog output) and communication via IO-Link. The PT series includes pressure sensors without display with analog output for media temperatures down to -125 °C. The PC series offers communication via IO-Link. The PK series sensors are pressure sensors with display especially for pneumatic and vacuum applications.

Pressure sensors are designed for measuring absolute and gauge pressure of gases, vapors and liquids.

Supply voltage: 18...32V DC
Current consumption: < 30mA
Output current: 4-20mA, two-wire system
load resistance: >500Ohm
Reverse polarity protection: yes
operating temperature: -25...80 °C
Storage temperature: -25...100 °C
Protection class: IP 67, according to EN60529
Time constant: approx. 200ms for rising output signal 10% to 90%
Overpressure: -0.3 bar to +4 bar max.
Overall accuracy: 0.5% f.s.

Measurement of low pressures up to 100mbar:
Oil mist, air, oil, liquids

The range of AMSYS pressure sensors extends from wafer level silicon sensors to simple SMD-mountable sensors and compensated dual-in-line sensors to packaged, ready-to-use pressure transmitters.
In addition to pressure sensors and inclinometers, AMSYS offers miniaturized OEM sensors for humidity and t

Balluff is a medium-sized company. Family-run for four generations, it was founded in Neuhausen on the Filder near Stuttgart and has grown into a world-oriented, leading global player. It is a company with tradition and customer relationships established over years, which acts simultaneously as an important partner in innovations and as a pacesetter for its customers.
Our company opened up to the global market very early on. Today, Balluff is no longer just at home in Neuhausen, but also has a presence in Europe, Asia, North and South America, and in all other important markets. We have a presence in 68 countries worldwide. This is so we can understand and assist our customers better and be able to provide them exactly what they need: high-quality sensor, identification and networking solutions as well as software for holistic system solutions in every area of automation.
When it comes to quality we have our own particular ideas. We call it Balluff Quality – a higher standard which goes beyond applicable official standards, not only in production but also in consulting and services.
Our clients also feel that special commitment when we assist them – fulfill their requirements, accept their challenges and develop forward-thinking technologies for them. Because we know that if our clients are perfectly equipped for the future, then so are we.

A family-owned and highly innovative supplier of customised products
halstrup-walcher GmbH is a medium-sized company, which has been in family-ownership ever since it was founded in 1946. CEO Jürgen Walcher looks back at the impressive rise of his company. "The focus of our products has changed significantly since those early days, but the precision and innovative power of our solutions have remained a constant factor."
halstrup-walcher GmbH successfully manufactures and markets products in three business areas: positioning systems for automated format changeover in mechanical engineering applications, pressure measuring technology for cleanroom, air-conditioning and OEM applications as well as drive solutions based on spur gears and actuators. The approx. 160 employees develop and manufacture both standard and customer-specific solutions. The level of in-house production is remarkable. halstrup-walcher`s strong quality assurance programme and lean processes have made it a highly professional partner offering impressive performance in terms of quality, costs and punctuality.