As the filter clogs or blocks up, the pressure on the high side will rise and once at the activation point, the pressure switch will change state. Differential pressure switches are a particular type of pressure switch that convert a change in the pressure between two systems into an electrical function. … The BAPI Differential Pressure Switch is ideal for air filter monitoring, static pressure proving, airflow proving or auxiliary fan actuation. Often used with ovens, dryers, and HVAC systems, these switches detect small differences in pressure. Connect this control to a P28 Lube Oil Control, with time delay, to monitor lubrication on … This means that the lowest pressure that the switch can be set to close at is 40 PSI, and the highest pressure it can be set to open at is 250 PSI. Rely on Grainger for … Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners, duct heaters, humidifiers, exhaust fans and duct booster fans. When the differential pressure exceeds your setpoint, the switch is activated. The LF31 is a favorite with leading manufacturers of gas-fired warm air furnaces and water heaters. They are suitable for air and other non-flammable and non-aggressive gases. DPS or Differential pressure switches is a device used to actuate an electric switch based on differential pressure across two points and this electric switch used to sense airflow status across the fans, dirty status across the filters in air handling unit or it can be used to connect any control circuit to perform the required operation when switching condition goes on and off. The two systems are constantly monitored, and their relative pressure is measured. It may be used to … The switching knob of PSS air differential pressure switch is mounted under the cover to avoid tampering, the scale is … 1-888-863-7389console.log("phone: 1-888-863-7389"); Our price is lower than the manufacturer's "minimum advertised price." HVAC Differential Pressure Switch which applies to controlling air and fire-protection dampers and monitoring air filters and ventilators. A Differential pressure switch is a device which utilizes a differential air pressure to actuate an electric switch at a pre-set actuation point. The air compressor pressure switch will also help your machinery maintain the proper pressure level as you go about your work. The differential that is actually available to use varies with the pressure range you’re actually working in. The switches include Miniature Switches, Subminiature Switches, Low Differential Switches, and Solid State Switches. Copyright © Dwyer Instruments, Inc. All Rights Reserved. The pressure differential switch is used to determine air rarefaction or air (non-aggressive gases) pressure drop. Designed for use in the HVAC industry. The most common 69H switches can be ordered online with or without the unloader option. LF31 switches offer pressure, vacuum and differential models capable of sensing very low setpoints, and switching current up to 5A resistive, 2.5A inductive. They are suitable for air and other non-flammable and non-aggressive gases. Differential pressure switch for air (DPS) dps-ge51colres.jpg. By accepting cookies you can optimize your browsing experience. The differential pressure switch housing unit contains a diaphragm, a snap-acting SPDT switch, and a range adjustment knob with increments. The differential pressure switch families offered by Kele come in a variety of housings from standard to water tight NEMA 4X. Air Differential Pressure Switch Adjustable Micro- Pressure Air Switch T3J6 This pressure switch is mainly used in ventilation and air conditioning systems to control the air flow in the air ducts, as well as in filters, ailerons and fans. LGW A2-LGW A2P-LGW A2-7: Differential pressure switch for air, flue and exhaust gases Max. This style is available with an unloader valve option to prevent the compressor from starting under load. The rugged 69H series pressure switch is designed for the demanding requirement of larger, heavy duty commercial air compressors (up to 250 psi). The most common 69J switches can be ordered online with various options. Browse our products below to begin the selection process of ordering the pressure switch that best fits your application, or contact us for assistance and bulk pricing! Often used to indicate clogged filters, they are designed to automate controls or activate an alarm in your process. We also offer pressure switches for our fire protection air compressors. The switch is actuated by a difference in pressure between the two sensing elements. It may be used to sense positive, negative, or differential air pressure… As pressure increases, available differential increases as well. Use them to automate controls or activate an alarm in your process. Particulate (Dust or Broken Bag) Transmitters, Position Indicators / Switches / Transmitters, Chemical Resistance Guide for Elastomers III, T: +1 800.872.9141 +1 219.879.8000 F: +1 219.872.9057. A wide variety of switches and circuit styles enables control functions needed for any system. The dual scaled adjustment knob in inches water column and pascals allows changes to the switching pressure to be made without a pressure gage. The air differential pressure switch PSS-series is suitable for use in air conditioning systems to provide an indication of fan status or 'filter dirty'condition. Pressure switch settings, common to many air compressors, are set for a range of 40 to 250 PSI and an adjustable differential of 35 to 60 PSI. P12 Series differential pressure controls can be used with oil and non-corrosive refrigerants. The switch can turn on your compressor when tank air pressure levels drop and more air is needed. This may be the difference between two positive or two negative pressures, one of each, or a positive and atmospheric or a negative and atmospheric pressure. 1-888-863-7389. The air differential pressure switch 930-series is suitable for low differential pressure switching applications in air-conditioning systems for providing indication of fan status or ´filter dirty`. In differential adjustment, the cut-in pressure can be increased or decreased on the pressure switch, changing the pressure differential. This makes your air compressor pressure switch a part that gets used often, and so it may wear down sooner than others. Please click here for information on our company’s current status & how we’re responding to COVID-19. A Differential pressure switch is a device which utilizes a differential air pressure to actuate an electric switchat a pre-set actuation point. Find Differential Pressure Gauges & Switches at MSC Industrial Supply, serving the metalworking, safety, and MRO industries for over 75 years They are selected by operating range and differential. Pilot Operated Valves are also available. Square D by Schneider Electric 9013FYG2J24 Air-Pump Pressure Switch, Nema 1, 40-60 Psi Pressure Setting, 20-65 Psi Cut-Out, 15-30 Psi Adjustable Differential 5.0 out of 5 stars 8 $27.99 $ 27 . Differential, Sensing Probe Kit with 7 inch probeDifferentialAir. pressure switch differential adjustment Pressure Switches Ashcroft®pressure switches are provided in a variety of configurations to meet most installation requirements in nearly every industry. Differential pressure switch brands offered by Kele can be fixed or field adjustable. Pressure switch settings, common to many air compressors, are set for a range of 40 to 250 PSI and an adjustable differential of 35 to 60 PSI. Designed to be the most adaptable switch on the market, the 69J Series offers the user the flexibility to build the pressure switch around the compressor – not the other way around. They can be wired normally open (NO) or normally closed (NC). Please note the following model number designations: Y = unloader included, Click To Contact Us Today Or Call: Greystone AFS Pressure Switches. Switches are single pole, double throw (SPDT), so they switch one circuit on or off. You must have JavaScript enabled in your browser to utilize the functionality of this website. Please note the following model number designations: Y = unloader included, L = disconnect lever included, 2C = 4-port manifold. The contact points in the switch are usually rated for the amount of current they can carry. The AFS series air differential pressure switch is a general purpose airflow proving switch designed for HVAC and Energy Management applications. If your pressure switch needs fall outside of the products shown here contact us for details on our complete pressure switch line. If your pressure switch needs fall outside of the products shown here contact us for details on our complete pressure switch line. Differential pressure switch, air flow, SPDT, 5 amps non-inductive 277 Vac, 0.25 to 1" WC Operating pressure: 500 mbar Operating pressure: 500 mbar Approvals: EN 1854 Differential pressure switches tend to be used for energy saving or preventative maintenance, for example; monitoring air filters for blockages. As a result, we cannot show you the price in catalog or the product page. The sample connections located on the side accept 6.35mm (0.25”) OD tubing. This site use cookies. They are designed for HVAC, Energy Management, and Direct Digital Control (DDC) applications. There are various optional pressure ranges, and 2 … dps-ge51bwhres.tif. The Miniature Switch is designed for low pressure or low-level vacuum applications. Conventional applications include : + Monitoring Filters blocked Alarm Device + Monitoring air blower running status. An air switch senses positive, negative or differential air pressure and actuates an internal switch. These switches sense a change in the pressure and open or close an electrical circuit when the designated set point is reached. Pressure switches monitor the pressure level of a process and open or close electrical contacts at pre-determined set points. A differential pressure switch is designed to sense a difference in pressure between two pressure sources in the plant for control purposes. Because of its UL 353 Limit Control Listing, the switch can be used in safety circuits to protect heating appliances, heating systems, processing systems and HVAC/R systems. Check & Safety Valves for Air Compressors, Q - Quiet Fire Protection Air Compressors, NFPA 13D Single Family Residential Pump & Tank Packages. © Dwyer Instruments, Inc. 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