PRESSURE SWITCHES
Industrial pressure switches
I industrial pressure switches They are essential devices for controlling and regulating pressure in numerous applications, from HVAC to filtration, from the chemical and petrochemical industries to food, pharmaceutical, and marine plants. Their task is simple and fundamental: to monitor the pressure of air, gas, or liquids and ensure process safety, reliability, and efficiency.
READ MORE
Comhas, as official distributor, offers a complete selection of pressure switches from leading international manufacturers such as Dwyer Instruments, Beck Druckkontrolltechnik, Danfoss, Calectro, Bailey & Mackay, in addition to branded solutions Comhas, the result of many years of experience in the measurement instrumentation sector.
The available pressure switches include versions differential, relative, absolute and electronic, suitable for both standard applications and particularly harsh environments. Thanks to rugged housings with high degrees of protection (IP65, IP66, IP67) and corrosion-resistant materials, they can also be used in harsh environments, subject to shock, vibration, seawater, or explosive atmospheres. International certifications such as ATEX, IECEx, UL and CSA ensure compliance with the most stringent safety regulations.
The range covers a wide range of needs: from low-pressure monitoring in ventilation and air handling systems to high-pressure control in complex industrial processes. For precision applications, electronic and digital pressure switches are also available, combining advanced functionality and easy integration with automation systems.
Advantages of Comhas pressure switches
- Wide selection of world-renowned leading brands
- Reliability and durability even under extreme operating conditions
- Solutions for low, medium and high pressures
- International safety certifications
- Technical support and advice for choosing the most suitable product
I would choose Comhas pressure switches means relying on a complete and certified range, capable of guaranteeing safety, efficiency and business continuity in every industrial sector.
- Factory configuration
- Ambient Temperature Range -20° C to 85° C
- Monitoring of overpressure, vacuum or differential pressure of liquid and gaseous media, even aggressive ones.
- Factory configuration
- Range from -900 mbar to 12 bar
- Customizable. Different materials available depending on the specific application
- Factory configuration
- Range from -900 mbar to 12 bar
- Customizable. Different materials available depending on the specific application
- Easy adjustment via knob
- Range from -700 mbar to 12 bar
- Customizable. Different materials available depending on the specific application
- Easy adjustment via knob
- Range from -700 mbar to 12 bar
- Customizable. Different materials available depending on the specific application
• Specialized in pressure, vacuum and differential pressure controls.
• Adjustable via front knob
• IP54 execution
• Available in 6 different ranges starting from 20 Pa up to 4000 Pa
Differential pressure switch 0-3500 Pa with illuminated display, 24V. Supplied with 2 m of hose e 2 nipples.
• Compact and economical in 9 standard ranges.
• Adjustment points from 18 Pa to 21.6 KPa.
• Accuracy ±2%.
• In optional waterproof case.
• Economical differential pressure switch for low pressures.
• Compact.
• Intervention ranges from 17 Pa to 5 KPa.
SIL2 Certifications
Special execution on request
Relative, absolute or differential pressure
Low sensitivity to vibrations
SIL2 Certifications
Special execution on request
Relative pressure (range -1.5…+1 mbar)
Differential pressure (range 0…2,5 mbar)
• Industrial pressure switches, robust and reliable.
• Used in all types of industry, chemical, petrochemical, pharmaceutical, research, food, aerospace.
• Robust. Few moving parts.
• Diaphragm drive.
• Available with wetted parts resistant to aggressive fluids.
• Easily customizable.
• IP 65 execution.
• CE marked with reference to the EN 60730-1 standard.
• Weight 0.9 kg.
• Industrial pressure switches, robust and reliable.
• Used in all types of industry, chemical, petrochemical, pharmaceutical, research, food, aerospace.
• All CE marked in compliance with European regulations for low voltage equipment.
• Robust, few moving parts.
• Diaphragm drive.
• Wetted parts resistant to aggressive fluids available.
• Easily customizable.
• IP 65 execution.
• CE marked with reference to the EN 60730-1 standard.
• Weight 0.9 kg.
• Body in brass, aluminum, stainless steel.
• Stainless steel diaphragm.
• Ranges: from 0,14 to 31 bar.
• Setpoint visible.
• Adjustable dead band.
• Sealed contact.
• Watertight and explosion-proof case.
• Ranges from 0,48 Bar 96,5.
• Fixed deadband.
• 1000W NEMA 4X execution (IP66).
• Model 1000E explosion-proof version compliant with UL standards.
Fields:
• 0,14 – 0,69 bar
• 0,69-1,72 bar
• 1,72 -3,45 bar
• 3,46 -5,17 bar
• ATEX explosion-proof differential pressure switch.
• Versions with aluminium body and nitrile rubber diaphragm or with AISI 316 body and fluoroelastomer diaphragm.
• Various fields available.
• Minimum range from 25 to 447 mBar.
• Max range from 0,7 to 13 Bar.
• Executions: standard, ATEX or UL & CSA.
• Pressure ranges: 0 to 60 bar
• Gold plated contacts
• Adjustable or fixed differential
• Robust and compact construction
• Shock and vibration resistance
• Membrane version for applications with: pulsations/pressure peaks, compatible with sea water
• IP67 protection. Robust and seawater resistant.
• Available with all land and naval certifications
• Pressure ranges: -0,2 to 28 bar
• High contact load
• Ultra-short bounce time
• Also available with gold plated contacts
• Adjustable differential
• IP44 protection when mounted with top cover and back plate
• Pressure ranges: -1 to 30 bar
• Replaceable contact system
• Also available with gold plated contacts
• Fail-safe
• Adjustable differential
• IP66 protection level
• Available with min. and max. reset function (IP54)
• Also available as a differential switch
• Available with TÜV approvals and with neutral zone
• Available with all relevant naval certifications
• Pressure ranges: -0,2 to 21 bar
• High contact load – ultra-short bounce time
• Also available with gold plated contacts
• Media: Gaseous media and air
• IP44 protection when mounted with top cover and back plate
• Also available with IP55 protection for OEM customers
• Small size – space saving – easy to install
• Shock and impact resistant
• Available as minimum and maximum pressure blocking pressure switches or as automatic pressure switches.
• Wide pressure range: from the low pressure BCP1 with a narrow differential to the high pressure BCP7
• Intrinsically safe double bellows allow immediate intervention in the event of a fault
• The DIN plug inserted on the top simplifies electrical wiring
• Single pole switch (SPDT), switching + alarm
• Direct mounting on the pressure connection or on the wall using a bracket
• Manual or automatic reset versions are available
• Adjustment screws on the top of the box
• Manual reset for the blocking pressure switches is only possible using a screwdriver
• Gold-plated contact version for electronic devices
• ADPS and EDPS differential pressure switches now available from Comhas as a single Atex / IECEx approved instrument
• Fields from 20 to 4000 Pa
• Fluids: air / gas
• The Dwyer® 1800 Series pressure switch is now available from Comhas in Atex/IECEX Exd execution as a single instrument
• 9 models for intervention fields from 18 Pa to 21.6 KPa
• Repeatability ±2%
• The popular Dwyer® 1900 Series pressure switch is now available from Comhas in Atex/IECEx Exd execution as a single instrument
• 6 models for intervention fields from approximately 18 to 5000 Pa
• Repeatability ±3%
• Hermetically sealed micro contact.
• Visual setpoint.
• Fixed deadband.
• New electronic pressure switch/regulator.
• Analog output 4-20 mA and 2 SPDT relays.
• Fully programmable from keyboard.
The QDP series, made by Comhas, is born from the union of the ADPS pressure switch with the Magnehelic® and Minihelic® analog pressure gauges and the LECMK series liquid column. The QDP series is supplied on an aluminum plate and is ready to be connected to the colored pressure ports on the lower side, without having to make connections with T or other. The PVC pipes and the rear fittings are made of plastic material.
Dwyer Magnehelic® Series Differential Pressure Gauges now assembled in IP65 waterproof wall case also with ADPS Series pressure switch.
