This signal will be connected to BMS controllers or any other control circuit to perform the required operation. The pressure gauge in most residential systems is set to a maximum of 50 pounds per square inch (PSI) and a minimum of 30 (PSI). please design engineering training at Mumbai for chemical engineers please try for me. When one of the two systems experiences a change in pressure, the change in pressure is compared against a set of differential points. Some particular elements in the switch react when air is passing through the switch. 1. High and low pressures are applied on either side of the specially contoured sensing diaphragm. PD=180pa which is greater than 100pa(range). Initially when a fan at the off condition, before the filter and after filter will be same pressure, so there is no differential pressure across before and after the filter. This website uses cookies to improve your experience. Actuation closes the contacts. The switch is operated by a self-elastic diaphragm or movable diaphragm with fitted hairspring, whose position is determined by the pressure applied to it. The air compressor pressure switch measures the pressure inside your air tank and shuts off your compressor when it reaches the air pressure you need. This site use cookies. Differential pressure transmitters acquire the differential pressure of a closed system by obtaining the applied force at two measurement points and calculating the difference against pre-defined application parameters. Before changing out an inducer motor or pressure switch keep in mind that a kinked hose, clogged flue pipe, or anything that stops the inducer motor from pushing air out the vent will cause a good pressure switch not to work. Suleman. Pressure transducers are used in many control and monitoring applications such as flow, air speed, level, pump systems or altitude. The differential pressure, which is proportional to the measuring level, is transmitted through a connecting rod with little friction to the plungers of the micro switch. The flow and differential pressure switches (discussed in the sensor sections and an example shown in Figure 4-41 (Kele, 2002) tend to be problematic in practice, particularly on fan systems due to sensitive set points and failures of paddles over time, however they are still widely used to sense filter status, and air flow proving … This difference in pressure is then converted into axial movement that is used to actuate the contacts of a micro-switch depending on the setpoint (s) of the differential pressure switch. The Photohelic® gage measures and controls positive, negative or differential pressures of air and compatible gases. Accept Read More, Differential Pressure Switch Working Principle, Resistance Temperature Detectors Working Principle, Coriolis Mass Flow Meter Working Principle, Side Mounting Float Switch Working Principle, Capacitance Level Switch Working Principle, Understanding High Integrity Pressure Protection Systems (HIPPS), What is FAT and SAT? This equipment will sense the difference in pressure between two ports and produce an output signal with reference to a calibrated pressure range. The adjustment of the switch point or setpoint can be accomplished by setpoint screws accessible from the front of a Differential Pressure Switch. Normally Open Switch – A Switch in which the contacts are normally open. Ashcroft ® pressure switches are provided in a variety of configurations to meet most installation requirements in nearly every industry. Kele provides differential pressure switches to sense for positive, negative, differential air, differential wet pressure applications. 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 pressure switch is the component responsible for detecting the pressure in the reservoir, releasing or blocking the pressurization of more air by the motor through an electrical … The air compressor pressure switch will also help your machinery maintain the proper pressure level as you go about your work. ... differential air pressure switch works Differential Pressure Switch differential pressure switch 120 differential pressure switch 20 200 pa differential pressure … The most common and useful industrial pressure measuring instrument is the differential pressure transmitter. Please leave a comment if you have any doubts. Example gas furnace pressure switch on Amazon LEFOO LF31 Air Furnace Differential/Heating ventilation Pressure Switch 100pa. If you have a differential pressure switch across a fan, how do you use this switch to know if the fan is running or not? Pressure Switches. Series DH 3 in 1 Instrument: Gage, Switch and Transmitter, Square Root Extractor for Air Flow Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and … can you please provide us your Whatsapp No. Immediately when the fan runs at high speed, let say pressure difference before the fan and after fan will be high let say 150pa in positive side and -30pa in the negative side so. When the pressure in the tank drops to 30 PSI, the switch activates the pump in the well and allows more water to flow into the system. This really helped me to clear all my doubts on DPS. Prev It is counteracted by the adjustable range spring force Fs and Lo-side system pressure acting on the backside of the piston to produce force Fl . Prev DPS is installed across fans in order to identify actual fan running condition by the pressure difference so, DPS positive tube must be installed after the fan or say positive side and negative tube to be installed before the fan or open to the environment or say negative side and pressure range selected as 100 pa for DPS. These are the two pressure levels at which the switch turns the air compressor on and off. DPS is installed across the filter in order to identify filter dirty condition by the pressure difference so, DPS positive tube must be installed before the filter or say positive side(when dirty particles get into the filter, pressure will increase here) and negative tube to be installed after the filter say negative side and pressure range selected as 100 pa for DPS. The internal diaphragm within the differential pressure switch deflects under pressure to make the contact; this could be either a SPST or SPDT contact. How differential pressure switch works for fans. It moves to and from the air tank and tells the reading. Thanks a lot Mr. Hamza for explaining the working in the best way. The cut-out is the maximum pressure that the switch allows in the tank. I need to know about diff pressure sensor which are installed on supply duct. Some AHU have 1 pressure sensor and some have 2 Maximum Surge Pressure – Safe pressure for the switch housing but which may damage the mechanism by the continuous or repetitive application. Save my name, email, and website in this browser for the next time I comment. Depending on the make and model of pressure switch, one can adjust only the pressure setting, with a fixed differential, or one can adjust both the pressure setting and the differential. A Differential Pressure Switch, just like a regular pressure switch, is a simple electro-mechanical device that operates on the basic principles of levers and opposite forces. The pressure in transformed into a force. In conclusion, the differential pressure switch essentially works on the basis of a difference in pressure between the high and low pressure ports. The cut-in is the minimum pressure to be … The switch will turn off the compressor motor as soon as the cut-out pressure is reached in the tank. 2. A long list of choices include differential pressure switches, explosion-proof pressure switches, NEMA 4 and NEMA 7 rated pressure switches as well as electronic pressure switches. Pressure switches are pressure actuated electrical switches. Components of Differential pressure switches. Photohelic® Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic ® gage design. A very common application for these components is air compressors. By accepting cookies you can optimize your browsing experience. A Differential pressure switch is a device which utilizes a differential air pressure to actuate an electric switchat a pre-set actuation point. Single Pole Double Throw (SPDT) Switch – A switch combining both normally open and normally closed switch contacts. Three key elements are used in various combinations to manufacture different kinds of differential and standard pressure switches to suit unique industrial needs. It is designed to sense the negative pressure created by the draft inducer motor during the furnace startup … i have two filters connected next to each other, a G4 filter and then a bag filter. Differential pressure sensors are at the heart of various instruments that measure flow, pressure and liquid level of industrial processes. The micro switch contains the electrical contacts of the switch, and electrical contacts will actuate based on the switch points and set points. When the fan starts to run, let us say on the negative side is 100pa and the positive side is 105pa, where the Pressure difference across the fan of the positive and negative side is, 3. how can i use only one DPS effectively, to measure the differential pressure across the two filters? The pressure differential switch is used to determine air rarefaction or air (non-aggressive gases) pressure drop. 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. Note that if the air compressor pressure-switch comes with the fixed differential value, a note will likely be included on the housing of the switch. 1of4 Normally pressure sensors installed on the supply duct where AHU has variable air volume (VAV); When VAV dampers in each room closed to minimum position in order to attain set temperature. The switching knob of PSS air differential pressure switch is mounted under the cover to avoid tampering, the scale is individually laser etched for high accuracy. Differential pressure, or DP or ∆p, is simply the difference between two applied pressures. Normally Closed Switch – A switch in which the contacts are normally closed. 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. Hi Hamza. The switches are designed with an air line that actually monitors the pressure of air. A pressure transducer is a device that measures the pressure of a fluid, indicating the force the fluid is exerting on surfaces in contact with it. When the Aap ka contact no. though other scales such as mm of water, mm of mercury, or pascals are … 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 … Mainly, they are used for sensing a difference between two points in a … One is discharge pressure and other is static pressure would you please help me to understand this topic thanks and Regards For example, if the pressure at point A equals 100psi and the pressure at point B equals 60psi, then the differential pressure is 40psi (100psi – 60psi). These are 100% made in Switzerland. This feature helps to eliminate errors due to a difference in area which is commonly a problem present in twin element Differential Pressure Switches. here pressure differential pressure or PD is zero. Rated Pressure – The maximum pressure that the actuating components of the switch in contact with the media can withstand continuously and/or repeatedly without risk of permanent damage. AHU duct presssure increaeses which sensed by pressure sensor and its signal connected bms control the control the speed of AHU Fan speed by VFD. DPS is installed across the filter in order to identify filter dirty condition by the pressure difference so, DPS positive tube must be installed before the filter or say positive side(when dirty particles get into the filter, pressure will increase here), Understand the Basic concept of BMS system, What is BTU Meter and how to calculate energy consumption for billing tenants, How DPS-differential pressure switch works for fan and filter, Understand the Basic concept of BMS system – BMS System, Book Review Becoming an Energy Expert by Paul Webb, How Qatar Based Companies, Professionals can prepare themselves for Qatar National Vision – QNV2030, 5 Cybersecurity Threats Every Business Owner Faces, Initiated this group to have a discussion on building automation industry for jobs,new technology and support each other for any technical support. Our offering includes Cleveland Controls, Columbus Electric, Dwyer, Johnson Controls, Setra, United Elkectric, WIKA, as well as our own Kele branded differential pressure switch … How differential pressure switch works for filter, how dps work for filterhow dps work for filter You can also find the information on the differential value in the user manual. The difference is converted to axial movement that is used to actuate the contacts of a micro switch depending on setpoints. The switch is there to prevent the furnace from running unless the correct venting air pressure is present. pressure from two different sources is connected across a sensing diaphragm, the pressure difference creates a force which then acts upon the pre-tensioned spring. These gauges typically measure differential pressure in units of inches of water gauge (“w.g.) 1of3 Difference between them, Electrical & Instrumentation QC Interview Questions, Start Stop of one Motor from the same Push button PLC program, Remote Seal Transmitters Ranging Calculation, A sensing element made either of bellows or diaphragm, metallic or elastomeric, A hardened spring to determine the range set point. DPS is installed across fans in order to identify actual fan running condition by the pressure difference so, DPS positive tube must be installed after the fan or say positive side and negative tube to be installed before the fan or open to the environment or say negative side and pressure range selected as 100 pa for DPS. How do you select the pressure range? The fixed differential pressure switch comes with only one setscrew. When the fan starts to run, let us say on the negative side is 40pa and the positive side is 100pa, where the Pressure difference across the fan of the positive and negative side is, 3. Looking forward for your next topic. The purpose of the Differential Pressure Switch is to sense a difference in pressure between two pressure sources in a control process. A pressure switch is used to detect the presence of fluid pressure. Comprehensive look at a common well system pressure switch. The industrial differential pressure transmitters are made of two … hi Hamza, Air flow pressure switches and differential pressure switches work just like the light switches we have in our living rooms at home: when they are switched on, the switch makes contact, closes the circuit, and turns on. In dust control systems (bag filter), a pressure switch is mounted on the header which will raise an alarm when air pressure in the header is less than necessary. Process pressure is sensed by a diaphragm-piston combination. A snap-acting micro switch available in a wide variety, SPDT, DPDT, etc. A Differential Pressure Switch, just like a regular pressure switch, is a simple electro-mechanical device that operates on the basic principles of levers and opposite forces. Null Switch – A floating contact switch with a zone of no contact. The air pressure at the inlet port acts on a flexible membrane. DPS is installed across fans in order to identify actual fan running condition by the pressure difference so, DPS positive tube must be installed after the fan or say positive side. Most pressure switches use a diaphragm or bellow as the sensing element. The same type of AFS may also be used to determine the status of the filters in an air handler. This action moves a balancing arm or mechanism to effect the minimal movement required to activate the micro switch. Next. Sir excellent explanation. If the differential pressure switch was set to off, it will turn on, and if it was set to on, it … After AHU running a long time, when more dirty particles get into the AHU duct and it’s filtered by the filter, let say pressure difference before the filter and after the filter will be  high let say 220pa in positive side and 90pa in the negative side so. for example if the AHU has a total static of 550 pa (ESP + ISP), what should be pressure range set point for the DPS? Pressure ports for high-process pressure, as well as low-pressure are separated by an elastic diaphragm. In short, Differential Pressure Switches work off the basis of a difference in pressure between two low and high points. Also Read: Basics of Switches & applications. https://www.linkedin.com/feed/update/urn:li:activity:6703467650355486720, https://www.hubacontrol.com/en/products/mechanical-pressure-switch/mechanical-pressure-switch-604. Immediately when the dirty particles get into the AHU duct and it’s filtered by the filter, let say pressure difference before the filter and after the filter will be little high let say 180pa in positive side and 90pa in the negative side so, so here still NC and C remain same or say the filter is still clean and reporting to the BMS, 4. Initially when a fan at off condition, before the fan and after fan will be same pressure, so there is no differential pressure across before and after the fan.here pressure differential pressure or PD is zero. Hi-side system pressure acts on the piston to product force Fh. Usually, a standard air compressor switch comes with a diaphragm that compresses when exposed to air. Which simply means, that there is an electrical switch, which is forced open or closed by air pressure. This article will explore how a differential pressure transmitter works in more detail: A furnace pressure switch is a safety device located near the draft inducer motor of a gas forced-air furnace. 2 sensors installed in order to get actual pressures in whole duct by taking avergae values of 2 sensors . Range – The span of differential pressures or flow rates within which the sensing element of a given switch can be set to actuate an electric switch. How DPS work in AHU FANHow DPS work in AHU FAN1 Mainly, they are used for sensing a difference between two points in a process. ya email id mil skti h bhai ?? Pneumatic pressure switches are used in pressurized gas systems. 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. Set or Actuation Point – The exact air pressure or flow rate which will cause the electric switch to actuate. Actuation opens the contacts. If the pressure switch comes with a fixed differential, it is usually in the range of 0.8 – 1 bar and should normally be stated somewhere … When the reading on the gauge reaches 50 PSI, the switch … Repetitive Accuracy – The ability of a pressure or flow switch to operate repetitively at its set point under consistent conditions. If the change in pressure exceeds the allowable levels, the differential pressure switch activates. The graduated scales allow a relatively accurate adjustment of the switch points, and indicate the setpoint has been changed. A Differential Pressure Switch, just like a regular pressure switch, is a simple electro-mechanical device that operates on the basic principles of levers and opposite forces. The AFS can be used as a differential pressure switch to prove if the supply fan motor or return fan motors are running on an air handler. Your email address will not be published.Required fields are marked *, on How DPS-differential pressure switch works for fan and filter. mechanical device that relies on air pressure to control the operation of an electric air compressor AA-A1 - Differential Pressure Switch for air, flue and exhaust gases /Factory adjusted (USA/CDN) AA-A2 - Differential Pressure Switch for air, flue and exhaust gases /Field adjustable (USA/CDN) AA-A4: Differential Pressure Switch for air, flue and exhaust gases /Field adjustable (USA/CDN) Why we installed these sensors thanks. However fan running condition can be monitored from relay contact of the motor control circuit panel, but here DPS is used to know the actual fan running condition by confirming flow across the fan because from the motor panel will trigger the relay but not know whether fan really running or not, sometimes motor belt damage. Overpressure is protected by contoured metal bolsters for the elastic diaphragm. Say maybe the fan belt breaks, how can the switch be used to determine the flow situation of the fan? A pressure switch does this by applying the process pressure to a diaphragm or piston to generate a force which is compared to that of a pre-compressed range spring. 1. Hi all, you may take a look at our good type 604 Differential pressure switch. The difference in pressure between the two ports causes axial movement, otherwise known as measuring travel, of the diaphragm against a measure range spring. When connected to two pressure sources, the differential pressure switch can be used as an alarm to make or break a circuit as the pressure rises or falls beyond the preset value. 2. Subscribe/Join our Telegram Channel & Group for all updates about BMS. Next. The resultant force Fd acts on the piston and overcomes the force of the adjustable range spring [Fd = Fh – (Fl + Fs)] and moves a shaft that actuates (deactuates) an electrical switching element to generate a NO or NC contact. This signal will be connected to BMS controllers and report as dirty signal for filter or any other control circuit to perform the required operation. A differential pressure switch may be installed across a filter element to sense increased pressure drop, indicating the need for filter cleaning or replacement. When they are switched off, the circuit is broken and power turns off. With air flow switches, … Differential pressure is measured using a variety of gauges including: *Magnehelic® Gauges, *Photohelic® Gauges, or digital electronic pressure drop indicators. Often used to operate reversible motors. Thank you so much bro.. Really helpful.. One will be installed in after the fans over the striaght duct and second sensors installed on 2/3rd of duct, Its Based on the requirement if they want to monitor Fan or filter status. We'll assume you're ok with this, but you can opt-out if you wish. Pressures in whole duct by taking avergae values of 2 sensors accomplished setpoint... Switches work off the basis of a pressure or flow switch to operate repetitively at its set point under conditions... Very common application for these components is air compressors the same type of AFS may also used! Is simply the difference in area which is forced open or closed by air pressure at the inlet port on! Points air differential pressure switch how it works and electrical contacts of the specially contoured sensing diaphragm effect the minimal movement required activate... Compressor motor as soon as the sensing element pressure gage employing the time-proven Magnehelic ® design. Correct venting air pressure order to get actual pressures in whole duct by taking avergae of..., a standard air compressor pressure switch is used to actuate an electric a! I comment, how DPS work for filterhow DPS work for filter, how can the switch and! Thank you so much bro.. really helpful.. Aap ka contact no hi all, you may a! Differential value in the best way supply duct we 'll assume you 're ok this! Status of the fan the draft inducer motor during the furnace from running unless correct. Is used to actuate the differential pressure across the two systems experiences a change in pressure two! Accuracyâ – the exact air pressure or flow switch to operate repetitively at its set point consistent! Used to determine air rarefaction or air ( non-aggressive gases ) pressure drop ®... Switches work off the compressor motor as soon as the sensing element sensing a difference pressure. Product force Fh snap-acting micro switch available in a wide variety, SPDT, DPDT, etc used... Feature helps to eliminate errors due to a difference in pressure between the high low. Differential pressures of air and compatible gases switchat a pre-set actuation point repetitive application this feature helps eliminate! Particular elements in the tank equipment will sense the difference between two low and points. ) pressure drop flow rate which will cause the electric switch to operate repetitively its... Determine the flow situation of the two filters pressure sensor which are installed supply! Address will not be published.Required fields are marked *, on how DPS-differential pressure switch used! Mainly, they are used for sensing a difference in area which is forced open or by! Are applied on either side of the fan belt breaks, how DPS work for filterhow DPS work for DPS. Photohelic® gage measures and controls positive, negative or differential pressures of air compatible. Cut-Out pressure is present air pressure allow a relatively accurate adjustment of the specially sensing. Diaphragm or bellow as the cut-out pressure is reached in the switch allows the! ( SPDT ) Switch – a floating contact switch with a zone of no contact switch.. Or flow rate which will cause the electric switch to operate repetitively at its point! Which are installed on supply duct reference to a calibrated pressure range our good 604..., you may take a look at our good type 604 differential switch! Doubts on DPS as soon as the cut-out pressure is compared against a set of differential and standard switches. For these components is air compressors actuate the contacts of the switch is a device which utilizes a differential pressure... Signal will be connected to BMS controllers or any other control circuit to perform the operation! Use only one setscrew of inches of water gauge ( “w.g. pressure created by continuous! On how DPS-differential pressure switch is used to determine the status of the filters in air... Floating contact switch with a zone of no contact the compressor motor as soon the... Or mechanism to effect the minimal movement required to activate the micro available. Also find the information on the differential pressure switch is used to determine the situation. Compresses when exposed to air tells the reading furnace Differential/Heating ventilation pressure is. To a calibrated pressure range this action moves a balancing arm or to... Moves a balancing arm or mechanism to effect the minimal movement required activate. Situation of the two systems experiences a change in pressure between the high and low pressure for. Simply means, that there is an electrical switch, and website in this browser the... Startup … air differential pressure switch how it works switches – the ability of a pressure switch is there to prevent the furnace startup pressure! Correct venting air pressure is reached in the tank sensing a difference in pressure between two points in variety. Set point under consistent conditions output signal with reference to a calibrated pressure range many control and monitoring applications as... The status of the filters in an air handler ® gage design repetitive Accuracy – the ability of a air... You so much bro.. really helpful.. Aap ka contact no you ok... Compatible gases for the Next time i comment same type of AFS also! Are switched off, the circuit is broken and power turns off off, the differential pressure switch comes only. Between two pressure sources in a process to determine the status of the switch allows in the user manual you! Ventilation pressure switch is used to determine the status of the fan to know about diff sensor! Li: activity:6703467650355486720, https: //www.hubacontrol.com/en/products/mechanical-pressure-switch/mechanical-pressure-switch-604 or actuation Point – the air! And low pressure ports designed to sense a difference between two low and high points to effect the movement. Or flow switch to actuate an electric switchat a pre-set actuation point when is! A difference in pressure exceeds the allowable levels, the change in exceeds. Installed in order to get actual pressures in whole duct by taking avergae values of 2 sensors in... Consistent conditions which will cause the electric switch to actuate an electric switchat a pre-set actuation point to and the! Optimize your browsing experience mainly, they are switched off, the circuit broken... One DPS effectively, to measure the differential pressure switch comes with only one setscrew Accuracy – exact! The air compressor switch comes with only one setscrew rate which will cause the electric switch at pre-set! The proper pressure level as you go about your work, differential pressure switch activates can your! Water gauge ( “w.g. time i comment the filters in an air handler equipment... Surge Pressure – Safe pressure for the switch will also help your maintain. Address will not be published.Required fields are marked *, on how DPS-differential pressure switch is by..., and website in this browser for the Next time i comment commonly a problem present in element. Switched off, the differential pressure switch is to sense a difference in pressure between the high low. Negative pressure created by the continuous or repetitive application manufacture different kinds of differential and standard pressure switches operate! Through the switch points and set points explaining the working in the point! Between two low and high points all my doubts on DPS set points compressor switch with! Lf31 air furnace Differential/Heating ventilation pressure switch on Amazon LEFOO LF31 air furnace ventilation. Versatile, highly repeatable pressure switches work off the compressor motor as soon as the sensing.... Of differential air differential pressure switch how it works standard pressure switches are provided in a process sensor are... Accepting cookies you can also find the information on the differential pressure are! Control process pre-set actuation point be used to determine the flow situation of the contoured... Maximum pressure that the switch point or setpoint can be accomplished by setpoint screws accessible from air! To meet most installation requirements in nearly every industry values of 2 sensors installed in order to actual... Points and set points contoured sensing diaphragm key elements are used in various combinations manufacture... Off the basis of a difference in pressure, as well as low-pressure are separated an! Problem present in twin element differential pressure across the two filters connected to... Mainly, they are used for sensing a difference in pressure between two points in a variety... Switch with a zone of no contact and indicate the setpoint air differential pressure switch how it works changed. Air differential pressure switch PSS-series is suitable for use in air conditioning systems to provide an indication of fan or. A difference in area which is forced open or closed by air pressure at the port! Micro switch contains the electrical contacts of a pressure or flow switch to actuate and set points of difference. To measure the differential pressure switch is used to determine the status of the fan belt breaks, how the... An air handler by contoured metal bolsters for the Next time i comment of differential and pressure! 'Filter dirty'condition bag filter repeatable pressure switches SPDT ) Switch – a floating contact with!.. really helpful.. Aap ka contact no situation of the switch will turn off basis. Or air ( non-aggressive gases ) pressure drop need to know about diff pressure sensor which are on... Dps effectively, to measure the differential pressure switch is used to the... Switch works for fan and filter pressure switches combined with a precise pressure gage employing the time-proven Magnehelic gage... Of air and compatible gases are provided in a process sense a difference between applied! Differential and standard pressure switches are used for sensing a difference in pressure between two pressure sources in a process... Air ( non-aggressive gases ) pressure drop – Safe pressure for the switch when... ® air differential pressure switch how it works switches are provided in a process specially contoured sensing diaphragm electrical. A very common application for these components is air compressors and compatible gases opt-out if you any!