The WIKA HP-2 Pressure Transmitter for Ultra High Pressure Measurement Applications

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The WIKA HP-2 pressure transmitter is designed for superior maximum pressure applications up to 217,000 psi (15,000 bar).  The HP-2 pressure transmitter provides high long-term stability and excellent accuracy. The HP-2 pressure transmitter provides precise results even at the highest pressures, but also gets a simultaneous reduction in running costs. Because of the superior long-term stability, the usually short calibration cycles for high pressure ranges are stretched, and the downtime of the plant is reduced accordingly. The high load cycle stability ensures a very long service life of the unit.

WIKA has developed a special cavitation protection that leads to the long operating life of the HP-2 pressure transmitter even in demanding applications. This is especially important for highly dynamic pressure profiles. The new HP-2 pressure transmitter is more compact than its predecessor (the Type HP-1) and is more economical thanks to its reliability, longer calibration cycles, and long service life.

Typical Pressure Application Profiles


This is the metal fabrication in which a pressure valve is subjected to enormous pressure.  This causes internal portions of the part to yield, resulting in internal compressive residual stresses. The goal of autofrettage is to increase the durability of the final product. It is commonly used in manufacturing fuel injection systems for diesel engines, battle and tank cannon barrels, and high-pressure pump cylinders.

The amount of pressure that is applied must guarantee maximum strength and expansion of the subject. If the amount of pressure is not applied to every part of the strengthening process in an equal manner, then the product will not reach its maximum strength capability.  Once again, the WIKA HP-2 pressure transmitter is the answer to your application needs.  It ensures quality and accuracy, in determining proper application methods.

Test Benches

Test benches are used for pressure or flow testing of system components. They can be used in many different industries. Test benches in the automotive industry are used for gasoline and diesel engines, solenoid valves, and truck transmissions. Fuel cell, turbo-generator, and wind turbine test benches are used to test power-generation equipment. Test benches can also be used for gas turbines, screw compressors, fluid flow dynamics, industrial valves, and medical devices.

Applications in the ultra-high pressure range are growing with the manufacturing of diesel injection components, such as nozzles and rails or even just pipes, of particular interest. Functional testing can be carried out at working pressure or under increased test pressure.

These test benches work on increasing the lifetime of diesel engines. Two of the main features of these test benches their high measurement of precision and a controlled constant temperature.

Functions of Diesel Engine Test Bench:

  • Check and adjust the distributor pump    
  • Measurement of each cylinder’s delivery art various rotation speeds    
  • Check and adjust the mechanical speed governor    
  • Measurement of the reflux delivery of the distributor pump    
  • Measurement of the distributor pump’s internal pressure

Water Jet Cutting

The extremely high water pressures required for water jet cutting have to be accurately regulated and measured. The cutter is commonly connected to a high-pressure water pump where the water is then ejected from the nozzle, cutting through the material by spraying it with the jet of high-speed water. Additives may also assist in this process. Because the cutting stream can be easily modified, water jets can be used to cut diverse materials. These include anything from prepared foods to metals.

Proper water jet velocity and distribution is crucial in water jet and abrasive water jet cutting applications. Knowledge of the water jet velocity is fundamental to determine the system cutting efficiency. It allows the user to experimentally determine the specific performance of the components utilized in the cutting process.

High Pressure Processing (HPP)

HPP is a process that uses intense cold water pressure to protect against harmful bacteria without affecting a food product’s taste, texture, appearance, or nutritional value. Products are packaged, sealed, and then placed in a cylinder-shaped pressure vessel where it is surrounded by water. Pressure is intensified with a hydraulically driven piston. Process pressures, hold times, and temperatures are controlled electronically. Up to 87,000 pounds of water pressure are exerted per square inch, protecting against harmful bacteria and sealing in freshness and flavor naturally, with no preservatives needed.

Benefits of HPP:

  • Enhances Flavor: With no preservatives added to change the taste, food possesses its most natural flavors
  • Maintains Freshness: HPP protects against spoilage-causing bacteria, producing food that stays fresher longer
  • Protects Naturally: Food is preserved using water pressure, not preservatives


Hydroforming is a well-defined process. It is a lucrative way of shaping flexible metals into lightweight, structurally solid and sturdy pieces. It uses fluid pressure in the place of the mechanical striking pressure in a conventional tool set to form the part into the desired shape of the die. Hydroforming is extremely valuable in producing whole components instead of components made up of multiple parts.

The distribution of pressure must be constantly monitored.  If the hydraulic fluid is not distributed correctly, then error with the finished product will occur. Applying WIKA’s HP-2 pressure transmitter to monitor the pressure distribution of the hydraulic fluid is the best approach. It makes certain that proper monitoring of pressure is in place, ensuring product excellence.

High Pressure Cleaning

High pressure cleaning uses water propelled at high speeds to clean surfaces and materials. The water stream is focused and pressurized, allowing the removal of the following:

  • Rubber from airport runways
  • Sealants and membranes from concrete
  • Paint from walls, highways, and metal

High pressure and ultra high pressure water has been used to prepare various surfaces for the purpose of repair and reapplication of the required coatings. The surface must be prepared any time a hard surface needs a coating applied. These coatings protect concrete from the elements rain, salt, etc. create. High pressure cleaning is used when asphalt and concrete are painted to communicate, such as travel patterns and potential hazards.

High pressure can be used to remove:

  • Highways
  • Runways
  • Parking Structures
  • Metal Surfaces

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