Pressure Measurement

Pressure and differential-pressure process instruments

From gauge and absolute to differential pressure, SEMAC Automation offers a complete portfolio of process pressure instruments: transmitters, primary elements, diaphragm seals and accessories, with ceramic and metallic measuring cells selected for your media — liquids, gases or steam.

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What we offer

Pressure & differential-pressure transmitters
Primary elements
Diaphragm (chemical) seals
Ceramic & metallic measuring cells
Pressure accessories
Solutions for liquids, gases & steam

Key benefits

Pressure & DP

Gauge, absolute and differential pressure across the full range.

Media-matched cells

Ceramic and metallic measuring cells for corrosive or clean media.

Diaphragm seals

Protect instruments from aggressive, hot or viscous process media.

Liquids, gases & steam

Dependable measurement whatever the phase or process condition.

Pressure measurement technologies

Pressure transmitters, differential pressure transmitters, pressure switches and pressure gauges solve different problems. See how each one works, where it fits and how they compare.

All technologies

Pressure transmittersA sensing element behind a diaphragm turns the process pressure into a 4–20 mA, HART or fieldbus signal for the control system. Read the article Differential pressure transmittersThey measure the difference between two pressures — for level in closed tanks, filter condition and flow through a primary element. Read the article Pressure switchesMechanical or electronic, they open or close a contact at a set pressure — for alarms, interlocks and emergency shutdown. Read the article Pressure gaugesA pointer on a dial shows the pressure on the spot, with no power and no wiring — the simplest pressure instrument. Read the article

Products in this category

32 products

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DELTA MOBREY387 Analogue Pressure TransmitterCompact stainless steel pressure transmitter engineered for harsh offshore and corrosive environments. View product

DELTA MOBREYCP Pressure GaugeEU-manufactured stainless steel pressure gauge for low-pressure industrial applications with superior corrosion resistance. View product

DELTA MOBREYD22 Pressure TransmitterRobust piezoresistive pressure transmitter for gases, vapours and liquids across demanding industrial environments. View product

DELTA MOBREYD23 SMART HART Pressure Transmitter - D-SeriesRugged HART-enabled pressure transmitter engineered for corrosive and hazardous process environments up to 1000 bar. View product

DELTA MOBREYD34 Differential Pressure Transmitter - D SeriesPrecision differential pressure transmitter for gas measurement in industrial combustion and airflow applications. View product

DELTA MOBREYD35 Differential Pressure Transmitter - D-SeriesRobust differential pressure transmitter with dual diaphragm seals, measuring -100mbar to 70bar reliably. View product

DELTA MOBREYDifferential Pressure Switch - Performance SeriesHigh-reliability differential pressure switch delivering better than 1% set-point repeatability for demanding control and alarm duties. View product

DELTA MOBREYNeedle Valves, 2, 3 and 5 WaysPrecision stainless steel needle valves for 2, 3 and 5-way configurations in critical pressure applications. View product

DELTA MOBREYPressure Gauge - GS SeriesSolid front safety pressure gauge with blowout protection for demanding process control applications. View product

DELTA MOBREYPressure Instrument AccessoriesStainless steel accessories that protect and extend Delta Mobrey pressure instruments in demanding process environments. View product

DELTA MOBREYSingle or double contact for pressure and temperature gaugesSingle or double electric contact accessory that adds switching capability to pressure and temperature gauges in demanding process environments. View product

KLAY INSTRUMENTS2000Klay Series 2000: robust flush-diaphragm pressure transmitter, 0.1–100 bar, ATEX/IECEx certified, 4–20 mA output with optional HART. View product

KLAY INSTRUMENTS2000-SANPrecision microprocessor-based pressure transmitter with hygienic connections for demanding process environments. View product

KLAY INSTRUMENTS2000-VALVEIntegrated pressure transmitter with microprocessor control, 0.1…10 bar range, adjustable zero/span, IP66 rated for harsh environments. View product

KLAY INSTRUMENTS3000Intelligent ceramic pressure transmitter with 0.2% accuracy, HART-ready, and robust IP66 protection for demanding industrial environments. View product

KLAY INSTRUMENTS3000-SANIntelligent ceramic pressure transmitter for hygienic applications with 0.1-50 bar range and HART capability. View product

KLAY INSTRUMENTS4000Precision pressure transmitter for liquids and gases with 0.075% accuracy, ATEX/IECEx certified, and integrated display. View product

KLAY INSTRUMENTS4000-SANHygienic pressure transmitter with flush diaphragm, 0.03–100 bar range, ATEX/IECEx certified for sanitary applications. View product

KLAY INSTRUMENTS8000Klay 8000 pressure transmitter: 0.1–100 bar range, 0.2% accuracy, ATEX/IECEx certified, marine-approved. View product

KLAY INSTRUMENTS8000-VALVEIntegrated pressure transmitter in valve body; live-removable design with 0.1–10 bar range and 0.2% accuracy. View product

KLAY INSTRUMENTSCER-2000Industrial pressure transmitter (40–350 bar) with ceramic sensor, 4–20 mA output, ATEX/IECEx certified. View product

KLAY INSTRUMENTSCER-8000Industrial pressure transmitter with ceramic sensor, 40–350 bar range, ATEX/IECEx certified, 4–20 mA output. View product

KLAY INSTRUMENTSDP-4000 Differential Pressure TransmitterKlay DP-4000: Precise differential pressure measurement up to 20 bar with HART and Profibus PA integration. View product

KROHNENewREconnectQuick coupling system enabling leak-free separation and reconnection of diaphragm seal systems without process interruption. View product

UNITED ELECTRIC CONTROLS10 Series Pressure SwitchCompact pressure switch engineered for reliable alarm and control functions in industrial and OEM applications. View product

UNITED ELECTRIC CONTROLS24 Series Delta-Pro Differential Pressure Switch - United ElectricCompact differential pressure switch for industrial alarm and shutdown control with proven reliability. View product

UNITED ELECTRIC CONTROLSINTREPID WirelessHART® Field Gateway - United ElectricWirelessHART field gateway enabling secure mesh network connectivity for distributed pressure instruments across process facilities. View product

UNITED ELECTRIC CONTROLSJ21K Series Differential Pressure Switch - United ElectricPrecise differential pressure monitoring for critical alarm and safety shutdown applications. View product

UNITED ELECTRIC CONTROLSJ40 Series Pressure Switch - United ElectricRobust sealed bellows pressure switch for critical alarm and shutdown control in industrial automation systems. View product

UNITED ELECTRIC CONTROLSJ6 Series Pressure Switch - United ElectricReliable pressure monitoring with enhanced sensitivity for critical alarm and safety applications. View product

UNITED ELECTRIC CONTROLSOne Series Electronic Switch and Transmitter - United ElectricUnified pressure monitoring solution combining switch, gauge, and transmitter in one compact unit. View product

UNITED ELECTRIC CONTROLSTX300™ Explosion-Proof Pressure TransmitterRugged, compact explosion-proof pressure transmitter built for demanding oil & gas and industrial hazardous-area applications. View product

Related industries

Water & Wastewater

Mining, Minerals & Metals

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