Pressure Sensors & Transmitters for Relative and Absolute Pressure

Flush capacitive ceramic membrane for food applications

• High precise pressure measurement -1...60 bar, relative and absolute
• Up to 40-times overload resistance
• Process temperatures from -40°C to +125°C
• Rugged design - maintenance free
• Electronic rotateable by 330 degree
• 2-wire 4...20mA or 3-wire 0...10V technology
• 2 PNP switching outputs
• 4-digit LED display
• Fast adjustment by key combination or menue guided adjustment by LED display
• Password protection
• Certification for the use in explosive hazardous areas

The Precont S40 is used in all fields of proceeding and process technique.
The excellent characteristics like pressure strength, high chemical resistance, corrosion protection and insensitivity against temperature shocks allows the use in the hardest applications for the measurement of gases, steams and liquids.

Pressure Switch for hygienic applications

• Pressure ranges 0...0,1 bar to 0...25 bar / -1...0 bar / -1...+1 bar  
• Front flush metallic membrane with surface roughness Ra < 0,4µm  
• EHEDG conform process connection  
• Suitable for wide process temperature range from -20°C to +150 °C  
• Comfortable operation in each mounting position by beveled display  
• Rotateability of housing and display value  
• Integrated evaluation electronic with
  - two pnp switching outputs and
  - one current output 4...20mA  
• Shortest reaction time and excellent accuracy  
• Hygienic optimized design with closed operation surface  
• Password function for protection of the settings against alternation

The devices of the series Precont PL with integrated digital evaluation electronic are compact pressure switches with an EHEDG conform process connection for hygienic applications for monitoring, regulation and continuous measuring of pressures form -1 up to 25 bar in gases, steams, liquids and dusts inside closed containers or pipes at process temperatures from - 20°C up to +150°C.  

The pressure switch Precont PL is especially designed for the requirements of the food and semi-luxury items industry and also für the pharmaceutical industry and biotechnology. This is especially valid for the conditions that occurs in CIP/SIP cleaning processes, like chemical resistance against cleaning solvents and insensitiveness against increased temperatures.  

Because of the availability of adapters for the common process connections like varivent or connections according to DIN11851 with cone flange with groove nut for tubes according to DIN 11850, and also a fitting weld-in sleeve, the pressure switch can be used in nearly every hygienic application.  

The use of a strain gauge with a metallic membrane and the corresponding excellent  characteristics like high pressure and pressure blow strength, high resistance against chemicals and corrosion, very good insensitiveness against temperature shocks and EM interferences, high accuracy and long term stability and also low temperature sensitiveness allows the use in nearly all ranges of industrial environment.

The pressure switch Precont PL is mounted in the wall of the pressure container or of the pipe.

Characteristics
The system pressure is applied to the metallic membrane and causes there a deflection of the polysilicon strain gauge at the back side of the membrane.
The pressure is transmitted to the polysilicon strain gauge by using a FDA permitted pressure transmitting liquid.

The metallic membrane offers excellent characteristics like high pressure and pressure blow strength up to ten times the nominal pressure, good reproducibility and hysteresis and also good long term stability and a low temperature dependence.

Signal processing
The pressure signal that is transmitted from the membrane to the strain gauge is transformed into an electrical signal that is recorded and processed in high resolution by a processor.

The pnp switching output resp. outputs are driven according to the respective settings.

When using the analogue signal current output the recorded pressure signal is adjusted according to the settings and transformed into a high resolution output signal of 4...20mA.

By 3 sensor keys and the four digit LED display all settings for the pnp output resp. outputs, the display and also the analogue output can be set resp. adjusted.

Analog pressure transmitter with metal strain gauge diaphragm

• Pressure ranges -1...1000 bar
• Metallic membrane for various applications
• Suitable for a wide process temperature range from -40 °C to +100 °C
• ATEX II 1 G EEx ia IIC T6 - Certification for the use in explosive hazardous areas
• Shortest response time and good accuracy up to 0,5%
• Integrated evaluation electronic
  • in 2-wire-technology with current signal 4...20 mA
  • in 3-wire-technology with voltage signal 0...10 V

The device Precont MT with integrated analogue evaluation electronic is a compact pressure transmitter for continuous measuring of pressures from –1 up to 1000 bar in gases, vapors, liquids and dusts within closed container or pipes, also in explosive hazardous areas, at process temperatures from – 40°C to +100°C.

The use of a strain gauge with metallic membrane and the corresponding excellent characteristics, allows the use in nearly all fields of industry.

The device is mounted in the wall of the pressure container or of the pipe.

The system pressure is applied to the metallic membrane and causes there a deflection of the polysilicone resp. thin film strain gauge at the back side of the membrane. At measuring ranges of 0...25 bar and smaller, the pressure is transmitted by a pressure transmitting liquid to the polysilicone strain gauge.

The metallic membrane offers excellent characteristics like high pressure and pressure blow strength up to five times the nominal pressure, vacuum resistance, good reproducibility and hysteresis and also good long term stability and a low temperature influence.

The pressure dependent variation of the strain gauge output voltage is converted by the integrated evaluation electronic into a current signal 4...20 mA resp. voltage signal 0...10 V.

Analog pressure transmitter with ceramic diaphragm strain gauge

• Pressure ranges to 600bar
• Ceramic membrane for various applications
• Suitable for a wide process temperature range from -40 °C to +100 °C
• ATEX II 1 G EEx ia IIC T6 - Certification for the use in explosive hazardous areas
• Shortest response time and good accuracy up to 0,5%
• Integrated evaluation electronic
  • in 2-wire-technology with current signal 4...20 mA
  • in 3-wire-technology with voltage signal 0...10 V

The device Precont KT with integrated analogue evaluation electronic is a compact pressure transmitter for continuous measuring of pressures from 0 up to 600 bar in gases, vapors, liquids and dusts within closed container or pipes, also in explosive hazardous areas, at process temperatures from – 40°C to +100°C.

The use of a strain gauge with ceramic membrane and the corresponding excellent characteristics, allows the use in nearly all fields of industry.

The device is mounted in the wall of the pressure container or of the pipe.

The system pressure is applied to the ceramic membrane and causes there a deflection of the thick film strain gauge at the back side of the membrane.

The ceramic membrane offers excellent characteristics like high pressure and pressure blow strength up to four times the nominal pressure, vacuum resistance, very high resistance against chemicals, corrosion and abrasion, very good insensitiveness against temperature shocks, high accuracy and reproducibility, good long term stability and a low temperature influence.

The pressure dependent variation of the strain gauge output voltage is converted by the integrated evaluation electronic into a current signal 4...20 mA resp. voltage signal 0...10 V.

Pressure transmitter with metallic membrane from 0 to 400 bar

• 2-wire-technology 4...20mA
• 3-wire-technoloty 0...10V
• Pressure switch with pnp output - switching point adjustable from 5-95%
• Hysteresis adjustable from 1,5% - 20%
• Metallic membrane with thin-film strain gauge, with:

•  
  • no mechanically moved parts
  • good long term stability
  • high reproduceability

• Pressure ranges fine leveled acc. to DIN 16 128
• Overload limit up to 4-times of the measurement range
• Version with damping system
• Separation membrane and Processconnection in high-grade steel
• Housing in high-grade steel in protection class IP 65

The pressure transmitter Precont KS measures pressures from 0...1 bar up to 0...400 bar and converts it into a signal 4...20 mA resp. 0...10V or into a PNP switching signal (pnp - closer). 

With flush, capacitive ceramic membrane for food applications

• In sensitiveness at high air humidity and at condensed water formation
• High precise pressure measurement -1...16 bar, relative
• Up to 40-times overload resistance
• Process temperatures from -40°C to +125°C
• Rugged design - maintenance free
• Electronic rotateable by 330 degree
• 2-wire 4...20mA or 3-wire 0...10V technology
• 2 PNP switching outputs
• 4-digit LED display
• Integrated signal linearization with up to 25 linarization points
• Fast adjustment by key combination or menue guided adjustment by LED display
• Password protection
• Certification for the use in explosive hazardous areas

The Precont D40 is used in all fields of proceeding and process technique.
The excellent characteristics like pressure strength, high chemical resistance, corrosion protection and insensitivity against temperature shocks allows the use in the hardest applications for the measurement of gases, steams and liquids.

By the special construction the device is especially suitable for the use in areas with height air humidity and at condensed water formation where conventional devices can not or can only be used with an expensive placed air compensation capillary.

Pressure transmitter with ceramic membrane, Precision 1,5% , low-cost-version

Supply: 24V DC ± 10%
Output signal: 0-20mA / 4-20mA; 0-10V DC
Short circuit and reverse polarity protection
Nonlinearity: <= 1% of full scale
Hysteresis: <= 0,5% of full scale
Process connection: G1/2" A acc. to DIN 16288
Electrical connection: plug acc. to DIN 43650
Protection class: IP65

Digital pressure switch with ceramic membrane

• Pressure measurement from -1 to 1000 bar
• Ceramic or metallic membrane for various applications
• Suitable for wide process temperature range from -40°C to +125 °C
• Comfortable operation in each mounting position by beveled display
• Housing rotateable by 340°, display rotateable by 180°
• Integrated evaluation electronic with two pnp switching outputs and one current output 4...20mA
• Shortest reaction time and excellent accuracy
• Hygienic optimized design with closed operation surface
• Password function for protection of the settings against alternation

The devices of the series Precont PS with integrated digital evaluation electronic are compact pressure switches for supervision, control and continuous measurement of pressures up to 1000 bar. By this the replacement of mechanical contact manometer is possible. Besides a bright luminous 4-digit LED display there are up to 2 free configurable PNP switching outputs incl. 4...20mA output available. The use is possible in gases, steams, liquids, oils and dusts inside closed containers or pipelines at process temperatures from - 40°C up to +125°C. The extremely short reaction time of 3ms allows also the use in hydraulic units and in pneumatic applications.

The pressure switch Precont PS is mounted in the wall of the pressure container or of the pipe.

Characteristics of the dry ceramic measuring membrane - Precont PSK
The system pressure is applied to the ceramic membrane and causes there a deflection of the thick film strain gauge at the back side of the membrane.

The ceramic membrane offers excellent characteristics like high pressure and pressure blow strength up to four times the nominal pressure, very high resistance against chemicals and corrosion and also very good insensitiveness against temperature shocks, high accuracy and reproducibility, good long term stability and at least a very low temperature influence.

Signal processing
The pressure signal that is transmitted from the membrane to the strain gauge is transformed into an electrical signal that is recorded and processed in high resolution by a processor.
The pnp switching output resp. outputs are driven according to the respective settings.

When using the analogue signal current output the recorded pressure signal is adjusted according to the settings and transformed into a high resolution output signal of 4...20mA.

By 3 sensor keys and the four digit LED display all settings for the pnp output resp. outputs, the display and also the analogue output can be set resp. adjusted.