Pressure Sensors & Transmitters for Relative and Absolute Pressure

With ceramic diaphragm, TFT display, analog and switching output Advantages:

• No moving parts, therefore no wear and durable
• High accuracy and overload protected
• Very easy to read by analog and digital measurement display
• Electronic switch output, no mechanical contacts
• Dry measuring cell, no oil fillings or damping fluids
• Easy commissioning due to intuitive user guidance
• Adjustable electronic damping of the measured signal
• Completely closed surface - no dirt holes
• The viewing angle optimized 2 "TFT color display provides an excellent representation of the measured values
• Easy readability through analog and digital measurement display
• The display can be rotated and thus guarantees optimum operation in any mounting position

• The completely fully electronic contact pressure device Precont MAC combines the advantages of a mechanical pressure gauge with the accuracy and longevity of a fully electronic pressure sensor. Therefore, on the large color TFT display of the Precont MAC a pressure gauge in the classical form is modeled to provide a quick and easy reading of the pressure.
• The measuring element itself consists of a high-purity ceramic capacitive cell, which guarantees the highest accuracy , robustness and long-term stability.
• The device has a switching output, in which both the switch and the reset point, and NC or NO contact function can be set. The set switching thresholds also appears in the display. The 4 -20mA analog output can be configured freely at zero and end points and provides the possibility to pass the measured value eg as with classical pressure sensors to the control.
• The Operation is simple using visual keys that work safely even at pollution of the control surface.
• The great advantage of Precont MAC is that in this contact manometer mechanical moving parts such as bourdon tubes or stepper motors has been omitted. Because of that the system is much more durable and less susceptible to vibration and temperature fluctuations.

In agricultural and forestry enterprises of all company sizes of, but also in municipal and horticultural facilities, more and more goods and products are loaded and transshipped, which are moved with front loader tractors and forklifts. The interest is growing for already seeing how much weight is currently in the bucket or on the pallet fork when lifting the goods.

Fields of activity:

• Simple amount detection when handling of goods 
• No overloading of vehicles 
• Exact dosage e.g in feed mixtures
• Amount detection e.g. at substrate introduction in biogas plants 
• Weight detection e.g. for firewood for moisture determination

• With Precont TN ACS-CONTROL-SYSTEM offers a digital pressure gauge, which is predestined for just such applications. The installation is very simple and can be performed by the user themselves at all front loaders and forklifts. The pressure gauge is built in to the pressure line to the lift cylinder. Via the pending hydraulic pressure, the weight of the load is measured. For the calibration of the system, only the attached tool must be set to zero via a TARE function and then a known weight has to be lifted. This weight is entered into the sensor. From this point, the calibration is complete and all raised loads are displayed in kilograms or tonnes. The system can be used both in single and double acting hydraulic systems. The Precont TN is designed for harsh industrial environments and has dirt-insensitive optical keys and a user-friendly, largearea TFT display. Through this display both a plain textbased operation, and a weight indicator in various forms of representation are possible. The display options range from a large digital display with analog bar, to a pressure gauge with superimposed digital value. Even the colors of the display can be changed. The waterproof design of the sensor and the stainless steel housing also allow the use on open platform touts or e.g. i8n front of the cabin window right on the front loader console. The very high overload resistance of the sensor with a burst pressure of 1200bar and a measurement range of 250 bar ensures maximum safety. The digital Precont TN can also be used not only as a front loader or forklift scale. Conceivable applications are also in connection with the front or rear hydraulics of the tractor e.g. to determine the loading amount of the fertilizer spreader or the load capacity of the sprayer that are attached to the three-point linkage.

• Easy self-installation and retrofitting
• Cost-effectiveWhen calibrating only one weighing reference is necessary
• Simple buoyancy of various tools
• Large, backlit display 
• Selection of the display in kg, t, or bar 
• High accuracy 
• Display formats can be selected as a pointer, bar or digital value 
• Dust and waterproof, vibration-proof for use in harsh environments
• Maintenance-free

• 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 S10 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.

Polysilicon or thin-film sensor with metal diaphragm

• High precise pressure measurement -1...1000 bar, relative and absolute
• Front flush metallic membrane up to 600 bar
• Up to 4-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 S20 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.

The polysilicone resp. thin-film measurement sensor guarantees highest pressure ranges, good reproduceability and hysteresis, an up to 4 times overload resistance and a good long term stability.

Advantages:

• 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

Application description:

• 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.

Seal with metal diaphragm for applications up to 370°C.

• High precise pressure measurement -1...400 bar, relative and absolute
• Up to 40-times overload resistance
• Process temperatures from -40°C to +370°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 S70 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.
• The process pressure is applied to the metallic membrane of the diaphragm seal and is transferred by vegetabe oil to the behind placed ceramic or metallic membrane of the respective measurement sensor. By this an essential extension of the permitted process temperature range up to -40...+370°C is achieved.

With capacitive ceramic measuring cell for rugged industrial use.

• Up to 40-times overload resistance
• Rugged design - maintenance free
• Integrated overvoltage protection
• 2-wire 4...20mA technology
• Certification for the use in explosive hazardous areas

• The Precont TM is a very rugged overload resistive pressure transmitter for gases, steams, liquids and dusts in hard industrial applications. By use of a dry capacitive ceramic measurement sensor in combination with high-grade steel 1.4571 (V4A), this pressure transmitter can be also used in very aggressive substances. The ceramic membrane has also an extreme overload resistance, highest measurement precision, long life time and no need for maintenance.

Pressure transmitter for measurement of absolute or relative pressure in gases, vapors, liquids and dust. Integrated evaluation electronic 2-wire with current signal 4…20 mA membrane for hygienic applications.

• Measuring ranges from -1 to 25 bar in liquids and gases
• Process temperature range from –20 °C to +150 °C
• High pressure strength because of metallic membrane
• Short start-up time
• Hygienic optimized design with closed operation surface
• Possible flood protected electronic connection
• Different hygienic connections available

• The device is an electronic pressure transmitter for continuous measuring of relative or gauge pressures in gases, vapors, liquids and dusts within closed container or pipes.
• The use of a piezoresistive measuring sensor with EHEDG conformal metallic membrane and the corresponding excellent characteristics, allows the use especially in hygienic applications.

• 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 variation of the resistance of the strain gage at the back side of the membrane.
• The metallic membrane offers excellent characteristics like high pressure and pressure blow strength, vacuum resistance, high accuracy and reproducibility, good long term stability and a low temperature influence.
• A FDA-listed pressure transmitting liquid is used for the transmission of the pressure from the membrane to the strain gage.
• The pressure signal, that is transmitted by the membrane to the sensor is converted into an electrical signal and converted by the integrated evaluation electronic into a current signal 4...20 mA resp. voltage signal 0...10 V.

• Machinery and plant engineering  
• Air-conditioning and refrigeration plant engineering  
• Hydraulic and pneumatic systems 
• Process industry  
• Environmental technology  
• Facility and building automation

• Wide range of applications 
• Finely graded measuring ranges from 250 mbar up to 600 bar 
• Wide process temperature range –40°C to +135°C 
• Wide variety of process connections
• High protection class IP69K/IP67
• Wide environmental temperature range –40°C to +85°C 
• Certification ATEX II 1 G Ex ia IIB/IIC Tx Ga 
• Ceramic front-flush or internal diaphragm 
• High accuracy – characteristic deviation to ≤ 0,5% of measuring range 
• Integrated evaluation electronic: current output 4…20mA / Voltage output 0…10V / connector plug M12 / connector plug EN 175-301-803-C / -A / connection cable with integrated reference air capillary

Ceramic highly overload resp. pressure blow resistive membrane, integrated battery for minimum 2 million measurements resp. 10 years operation at a measuring interval of 3 minutes, high accuracy and long term stability

• Ceramic highly overload resp. pressure blow resistive membrane
• Front flush capacitive ceramic membrane; no deposition or contamination
• for relative, vacuum and absolute pressure measurement
• high accuracy and long term stability
• Integrated battery for minimum 2 million measurements resp. 10 years operation at a measuring interval of 3 minutes
• completely made from stainless steel
• Data memory for up to 216 000 measurement values
• Data retrieval directly per PC resp. handheld-PC or  wireless remote data transmission per GSM/GPRS

• The pressure transmitter with data logger Prelog PDL is a battery powered system for autonomous measurement and registration of pressure in pipelines and containers.
• The excellent characteristics like highest strength against pressure and pressure blows, high resistance against chemicals and corrosion, very good insensitiveness against temperature shocks and EM interference, highest accuracy and long term stability as well as low influence of temperature makes it possible to use the sensor in various fields with liquids like water, waste water, solvents, oil, sludge, grease, cleaning agents, etc., where levels and temperatures combined with date and time should be surveillanced without having any auxiliary power at the place of installation.
• Because of an intelligent store management the internal data memory with a size of 64kB resp. 128kB allows a  recording of minimum 21 600 up to maximum 216 000 measurement data sets at exclusive storage of the pressure measurement.
• A highly efficient lithium battery that is integrated in the probe ensures the power supply of the device.
• The battery life time is conceived for minimum 2.000.000 measurements. This equals a run time of minimum 10 years at a measurement rate of 1x per 3 minutes.
• Because of many possibilities of adjustment a highest flexibility in the application for control level and especially for pumping test or long term surveillance is given.

• The liquid contacts directly the ceramic membrane and causes there a deflection of the membrane because of the hydrostatic pressure of the liquid.
• At the maximum deflection the membrane contacts a robust ceramic carrier and because of this, the membrane come through over pressure of e.g. 40-times of nominal load at a sensor with a pressure range of 0...1 m water column without damage.
• The hydrostatic pressure signal of the ceramic membrane is measured by the integrated high-resolution digital electronic according to the adjusted measurement rate and is stored loss protected.
• Because of an intelligent store management the internal data memory with a size of 64kB resp. 128kB allows a  recording of minimum 21 600 up to maximum 216 000 measurement data sets at exclusive storage of the pressure measurement signal.
• A highly efficient lithium battery that is integrated in the probe ensures the power supply of the device.
• The battery life time is conceived for minimum 2.000.000 measurements. This equals a run time of minimum 10 years at a measurement rate of 1x per 3 minutes.
• Integrated over voltage protection modules prevents the destruction of the pressure sensor caused by atmospheric influences like e.g. thunder strike.

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.

• Process engineering 
• Process technology 
• Environmental technology

• Two-wire-technology 4...20mA or three-wire-technology 0...10V 
• Good resistance by ceramic membrane with stainless steel process connection 
• Robust device design 
• Low hysteresis

• High accuracy 
• High overpressure safety 
• High vibration resistance

The device is an electronic pressure transmitter for monitoring, control as well as continuous measurement of pressures in gases, vapors, liquids and dusts.

Due to the device construction with measuring ranges from -1 bar to 1000 bar, gauge, measuring ranges from 0 bar to 1000 bar, absolute, measuring spans from 400 mbar to 1000 bar, process temperatures from –40°C to +125°C, environmental temperatures from –40°C to +100°C, process material CrNi-steel as well as the availability of industrial standard process connections like thread ISO 228-1 (EN 837 manometer) and thread ISO 228-1 (front-flush) the device is especially suitable for the use for machinery and plant engineering, air-conditioning and refrigeration plant engineering, hydraulic and pneumatic systems, process industrye, nvironmental technology and facility and building automation.

The device is suitable for demanding measuring requirements. 

The front-flush diaphragm has been specifically designed for the measurement of viscous, paste-like, adhesive, crystallizing, particle-laden and contaminated media, which would clog the pressure channel of conventional process connections.

The certification acc. to ATEX II 1 G Ex ia IIB/IIC Tx Ga allows the use in explosion hazardous areas.

The robust design and the high-quality workmanship turns the device into a very high quality product, which even the most adverse environmental conditions cannot affect, whether the lowest temperatures when used outdoors, extreme shock and vibration stress or aggressive media.

A captive laser marking of the type label ensures the identifiability throughout the entire lifetime of the device. Obviously is the optional marking of a measurement point designation resp. TAG, a customer label or of a neutral type label, of course also per laser marking.

A LABS-free resp. silicone-free version, a factory calibration with calibration certificate and a customer specific configuration resp. preset is also optionally available like factory certifications for drink water resp. food suitability.

• Wide range of applications
• Wide variety of process connections
• Certification ATEX II 1 G Ex ia IIB/IIC Tx Ga
• Metallic front-flush or internal diaphragm
• High accuracy – characteristic deviation to ≤ 0,5% of measuring range
• Integrated evaluation electronic: current output 4…20mA / Voltage output 0…10V / connector plug M12 / connector plug EN 175-301-803-C / -A / connection cable with integrated reference air capillary

• 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.

• Machinery and plant engineering
• Air-conditioning and refrigeration plant engineering
• Hydraulic and pneumatic systems
• Process industry
• Environmental technology
• Facility and building automation

• 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%

• 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). 
• A thin-film strain gauge is used as pressure sensor. The small dimensions of the measurement sensor ensures a good behaviour against pulsating measuring media and vibrating installations as well as a very good reproduceability and hysteresis and an overload resistance of up to 4-times the measurement range. Due to the high natural frequency of the metallic membrane also fast pressure changings could be measured. The versions Precont KS0 + KS1 has a process connection with an inside places separation membrane in high-grade steel in G1/2A or M20 x 1,5 acc. to DIN 16 288. This process connection is available in two version, with and without damping system.
• The damping consists of an screw with a small slot that is placed at the medium side of the process connection. The variants Precont KS2, KS 3, KS 4 + KS 5 has a process connection with an front-flush separation membrane in high-grade steel in G 1/2A or M 20 x 1,5 for an seal in FPM or a metallic seal acc. to DIN 3852. The process connection is available with and without damping system. The damping consists of a choke that is placed at the measurement medium side. Ranges > 40 bar have an additional protection plate in front of the separation membrane. The version with damping should be used if an incompressible measurement medium with possible occuring pressure peaks over the measurement range should be measured. Pressure peaks can be produced e.g. by pumps, fast-closing vents, magnetic vents or controle cylinders. The pressure transmitter is conceived for advanced applications.
• The very small dimensioned housing in high-grade steel is designed in protection class IP65.

• High precise pressure measurement -1...25 bar, relative and absolute
• Front flush metallic membrane with surface roughness Ra < 0,4µm
• EHEDG conform process connection
• Up to 4-times overload resistance
• Process temperatures from -20°C to +150°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 devices of the series Precont S30 with EHEDG conform process connection for hygienic applications are used for supervision, control and also for continuous measurement of pressures from -1 up to +25 bar in gases, steams, liquids and dusts within closed containers or pipelines at process temperatures from -40°C to +150°C.
• The pressure sensor Precont S30 is expecially designed for the requirements in the food and semi-luxory item industy, as well as the pharmaceutical industry and biotechnology. This is especially relavant for the extreme conditions like chemical resistance against cleaning agents as well as insensitiveness against increases temperatures in the case of CIP/SIP cleaning processes.
• Due to the availability of adapters for the common process connections like varivent or connections acc. to DIN11851 with cone flange with nut groove for pipes acc. to DIN 11850, as well as a suitable weld-in sleeve the pressure transmitter can be installed in nearly hygienic application.
• The use of a strain gauge with metallic membrane guarantees excellent characteristics like high pressuren 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 as well as low temperature sensitiveness.

• Ceramic or metallic membrane for various applications
• 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.

Pressure switch for supervision of absolute and relative pressures in gases, vapors, liquids and dust.

• Ceramic or metallic membrane for various applications
• 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 60 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 PSC

• 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.

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.

• Front flush metallic membrane with surface roughness Ra < 0,4µm  
• EHEDG conform process connection  
• 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.