A pressure switch controls and adjusts a hydraulic or pneumatic system. It reacts to a pressure threshold or setpoint. Activating an on-off output, such as a dry contact, directly governs a mechanism which reestablishes the desired pressure.
These devices are found in process control, for compressor or pump operation, in chemistry, automobiles, agribusiness, the energy industry, hydraulics, construction, refrigeration units and in oil and natural gas installations.
Relative or absolute pressure gas, vapor or liquid switches have a single input. Differential models have two inputs. Such switches can be mechanical or electronic.
Mechanical switches use a diaphragm, a piston or a Bourdon tube. The output contact may be normally open (NO) or normally closed (NC). A calibration screw is used to adjust the setpoint. Hysteresis parameters are set by the manufacturer or are adjustable.
Electronic switches also act as pressure transmitters. They use strain gauge, capacitive, inductive or piezoelectric measurement methods. Setpoints are programmable; readings are transmitted by two-wire, four-20 mA current loop or a three-wire 0-10 V arrangement. They are temperature-compensated and more precise.
Choice will depend on the switch's working pressure and adjustment ranges, hysteresis, ability to withstand excess pressure and degree of protection.
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Pressure switch for centralized lubrication unit DSB series SKF Lubrication Systems Germany AG
The DSB1 pressure switch for monitoring centralized lubrication systems is attached directly to the lubricant line, in contrast to conventional pressure...
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Rugged pressure switch HPS series Honeywell Sensing and Control
The Honeywell Pressure Switches, High Pressure Premium, HPS Series is a portfolio of durable, reliable electromechanical gauge pressure on/off switches that are available with either single pole single throw (SPST) normally open or normally closed circuitry, or single pole double throw (SPDT) circuitry. The HPS Series’ IP67 environmental sealing...
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Electronic Pressure Switch with Display Model PSD-30 Applications * Machine-building * Machine Tools * Hydraulics/Pneumatics * Pumps and Compressors Special Features * Easily-readable, robust display * Intuitive and fast setup...
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Digital pressure / vacuum switch ZSE10 series SMC Europe
Our new ZSE10(F)/ISE10 pressure switches really do fit the bill when lack of available machine space is an issue. Designed specifically with space savings in mind, and measuring only 9.8 mm width, they offer similar performance to our popular ZSE30A/ISE30A models but require around 50% less...
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Electronic pressure / vacuum switch SWCN series CAMOZZI
The advantages > Compact and lightweight > Equipped with a digital indicator > Programmable switching point and hysteresis > Upper and lower limit values can be programmed through...
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Plug-in piston pressure switch SW 27 SUCO
Diaphragm/piston pressure switches hex 27 with integrated connector - Zinc-plated...
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Pressure switch GEMS SENSORS & CONTROLS
GEMS Pressure Switch Instruments Cover A Wide-Range of Applications Field-Adjustable or Factory Set Switches High Proof Pressure Rugged...
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Pressure switch -0.8 - 28 bar, IP66 | RT series Danfoss Industrial Automation
RT, Pressure switches: RT switches are used in general industrial and marine sectors. The RT single pressure switches series consist of a variety of ordinary controls including neutral zone pressure...
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Differential pressure switch AFRISO-EURO-INDEX
Application: Suitable for all practically neutral media such as process water, heating water, neutral gases, oils. Suitable for two-point control by means of a continuously adjustable switching point (between...
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Hydraulic pressure switch max. 700 bar | DG series HAWE Hydraulik
Electro-hydraulic pressure switches are devices, which, when set under pressure close or open electrical contacts. They are widely used in applications where it is intended that, once a pre-set...
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Hydraulic pressure switch max. 7 l/min | PSCK, VFC series ENERPAC
Enerpac workholding flow control valves and pressure switches provide control over your hydraulic system Mounts directly...
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Electronic pressure switch N Series ASHCROFT
Type N Series Nema 4 Electronic Pressure Switches, Watertight Enclosure with Pressure Indication: # Ashcroft® K Series polysilicon...
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Pressure switch for gas 0.4 - 500 mbar, EN 1854 | DG series Elster Kromschröder
Diaphragm pressure switch with micro-switch (silicone-free) for monitoring gas pressures in industry, for gas and air, also for biologically produced methane, with hand wheel for switching point adjustment, can be used...
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Pressure switch with digital display ISE30A SMC
Based on our successful ZSE/ISE 30 Series, our new high precision digital pressure switch, Series ZSE30 A(F) / ISE30A, with dual colour display, offers even more high performance features. Now available with either NPN...
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Ready-wired pressure switch SUCO VSE
READY-WIRED PRESSURE SWITCHES Pressure monitoring with piston pressure switch / diaphragm pressure switch, Applications Our pressure switches mostly have a degree of protection IP65. This may not be adequate for all applications. Especially for commercial vehicles, mobile hydraulics,...
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Pressure switch for pneumatic CROUZET
For more than 40 years now, Crouzet the automation control components manufacturer, has offered a wide range of pneumatic products for simple automation systems using compressed air, without a source...
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Electronic pressure switch with display max. 25 bar | PG series ifm electronic
Now available with conical G1 process connection. Optimum legibility due to the electronic pointer display. Rotatable display with LED bargraph for switch point indication. Optionally trend display or min/max display via the LED bargraph....
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Pressure switch max. 15 bar METAL WORK
This type ot pressure switch features a high degree ot miniaturisation and a modern attractive design. It can be installed...
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Pressure switch IO-Link | PC-200 series TURCK
The PC-200 series is made especially for IO-Link communication. In addition,...
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Pressure switch IP65, -1 000 / 2 000 mbar | PST KIMO
ABS housing - IP 65 Display 5-digit LCD 1 RCR relay...
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Differential pressure switch for HVAC 20 - 5 000 Pa | QBM81 series SIEMENS Building Technologies
QBM81.. – differential pressure switch The QBM81.. differential pressure switch...
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Pressure switch MCS Eaton Moeller
Sensors for any medium Pressure switches MCS Pressure switches are control devices that monitor the pressure of a medium and convert it into an electrical signal. They are used to monitor the pressure of liquid and gaseous media in installations. Pressure switches MCS have two adjustable switching points...
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The OsiSense line of XMLF pressure switches from Schneider Electric are designed to control or regulate pressure in fluid, water, hydraulic, or pneumatic systems from -14.5 psi...
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Electronic Pressure switch, with LCD display for the field of plant construction, fluidics, process technology, and pneumatics, as well as in the monitoring and control of pumps and compressors. Models available with the following output types: • all models: switch output...
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Pressure switch for pneumatic 15 - 150 psig | P04159, P04160 series Parker Pneumatic Division Europe
P04159 (NC) and P04160 (NO) Pressure Switches are intended for use in mobile, general-purpose, compressed air systems. Product is suitable for all trailer air-ride systems, truck...
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Electronic pressure switch with display JUMO DELOS SI JUMO
The high precision electronic pressure switch JUMO DELOS SI meets technical hygienic requirements. The device designed and certified in conformity with EHEDG regulations meets the specific requirements of hygienic process safety with its easy-clean design and its front-flush measuring system without seals....
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Explosion proof differential pressure switch ATEX, IP66 | AT11910 DWYER
is now available in an flame-proof ATEX approved package in the AT11910 Series. This pressure switch combines advanced design and precision construction...
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Pressure switch with digital display PSE300 SMC Corporation of America
Series PSE digital pressure switches allow pressure to be controlled from a remote location. Series PSE510 is compact and lightweight,...
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Digital pressure gauge /switch max. 400 bar | TED Baumer Bourdon-Haenni
OEM applications Excellent price/performance ratio Measurement of vacuum, absolute or gauge pressure Two threshold outputs: PNP transistors Windows programming software Compact and...
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Pressure switch 4 - 20 mA | 836E Allen Bradley
Bulletin 836E Solid-state Pressure Sensors measure the pressure of liquid, gas,...
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Differential pressure switch Deltadyne® PALL
Deltadyne® Differential pressure switches are used to indicate...
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Adjustable pressure switch 0.5 - 10 bar | 349 series ASCO NUMATICS
ADJUSTABLE PRESSURE SWITCH with or without protection and status indicators G 1/4 or subbase mounted body CONSTRUCTION Grivory...
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Electronic pressure switch PARKER Hydraulics
General Description The ED101 series electronic module is used to control DSA/DWE/DWU...
