High temperature pressure switch meets the needs of industrial use in special environments with high temperature and high pressure. The current maximum temperature can withstand 300℃.

The high temperature pressure switch pressure set point can reach 30MPa. The product is a fully electronic structure, and the front end adopts an oil-filled piezoresistive pressure sensor with isolation membrane. Through high-precision A/D conversion, processed by a microprocessor. On-site display, and output one analog quantity and four switching quantities plus 485 communication.

Specifications of High Temperature Pressure Switch

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Differential Pressure Transmitter Installation Guide

What can the high temperature pressure switch do?

1. The high temperature resistant pressure switch is to amplify the pressure signal through a high-precision instrument amplifier. The data is collected and processed by a high-speed MCU. The built-in precision sensor is used for compensation. It is a high-precision device that detects pressure and liquid level signals. Realizes pressure and liquid level monitoring and control. .
2. It is widely used in automation systems for measuring gas and liquid pressure in chemical engineering, machinery, hydrology, electric power, environmental protection, etc. Because the adjustment is convenient and flexible, and the installation is simple, it can replace most occasions where liquid level switches are used.
3. The core of the product adopts a new type of intelligent micro-processing chip, with stable functions and practical performance.
4. LED displays the current pressure or level value.
5. The pressure or liquid level can be set to start or stop according to your needs.
6. Three units of four LED products can be selected according to customer needs: Mpa KG.F/CM2, PSI.
7. High and low pressure or liquid level alarm points can be set. And output to the control equipment through a relay or optocoupler; output dual-circuit relay (single pole double throw) switch value.
8. Two relays/two optocouplers/with 4-20mA/0-10V output can be selected.
9. It adopts high-precision pressure sensor, which has higher accuracy than mechanical high temperature pressure switch. It has small hysteresis, fast response, stable and reliable. There is no dead zone adjustment, and the relay action pressure point can be set arbitrarily within the entire range.
10. Use the buttons to adjust the action pressure, which is easy to use and more flexible. Protection grade: IP65, which can be used in harsh environments.

Extended reading: High Temperature Flow Meter

What is the difference between a pressure switch and a pressure sensor?

Pressure sensor is the most commonly used sensor in industrial practice. A sensor that can sense pressure and convert it into a usable output signal. The pressure switch is to open or close the system under a certain pressure to realize the detection, display, alarm and control signal output of the medium pressure signal. Ensure that the system is operating normally. Then the pressure sensor and the pressure switch are used as pressure-related instruments at the same time. What is the difference in the use of the two?

The pressure switch is a kind of switch as its name implies, but this kind of switch is a pressure set in advance. When the measured medium reaches this pressure, the switch can be turned on or off automatically. The pressure switch must be given a pressure value in advance, and then turn the switch on or off. Used for simple control, they are all on-off outputs.

The pressure sensor can output not only analog signal, but also digital signal output. Digital signal processing is more convenient, and remote transmission is also possible. The pressure sensor is composed of a pressure-sensitive element and a conversion circuit, which uses the pressure of the measured medium to act on the pressure-sensitive element to produce a small change in current or voltage output.

Sensors often need to be used in conjunction with external amplifier circuits to complete the process from pressure detection to control and display. Since the pressure sensor is a primary element, the signal feedback from the pressure sensor needs to be processed, analyzed, stored, and controlled by the measurement and control system. Make industrial automation equipment and engineering operation control more intelligent.

In terms of price, pressure sensors are naturally more expensive than pressure switches, because pressure sensors have internal signal conditioning circuits. But considering the service life and safety, the cost performance of the pressure sensor is much higher than that of the pressure switch. The after-sales service, product reputation, and market differences of pressure sensors are better than pressure switches. Obviously, the pressure sensor should be preferred.

The above is the difference between a pressure sensor and a pressure switch. I hope that the introduction of the editor can provide some help to everyone’s use.

Extended reading: Miniature Pressure Switch

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Sino-Inst offers over 10 Electronic Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

It is widely used in hydropower, tap water, petroleum, chemical, machinery, hydraulic and other industries to measure, display and control the pressure of fluid media on site.

A wide variety of High Temperature Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of High Temperature Pressure Switch instrumentation, located in China.

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

High pressure switch is a multifunctional high pressure switch suitable for a variety of hydraulic and pneumatic applications. The setting value is adjustable, and its adjustment range is 0.3-40MPa.

High pressure switch can be used for compressed air containing oil mist and other gas containing oil mist that has no corrosive effect on pressure sensor materials, hydraulic oil, water-oil emulsion and neutral liquid medium with good lubricating performance. The setting value of the controller is adjustable, and its adjustment range is 0.3-40MPa.

Features High Pressure Switch

1. Mechanical switch, no power supply, easy to use
2. Has normally open normally closed contacts
3. Adjustable pressure alarm point
4. Suitable for occasions with explosion-proof requirements
5. Easy to use, stable work, long mechanical life
6. For neutral gas containing oil mist

Specifications High Pressure Switch

Set value refer to table unit: MPa

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How does a high pressure switch work?

Working principle:
When the pressure in the system is higher or lower than the rated safety pressure, the disc in the sensor moves instantly. Push the switch connector on or off by connecting the guide rod.

When the pressure drops or rises to the rated recovery value, the disc is reset instantly. The switch resets automatically. Or simply speaking, when the measured pressure exceeds the rated value, the free end of the elastic element produces displacement, pushes the switch element directly or after comparison, changes the on-off state of the switch element, and achieves the purpose of controlling the measured pressure.

The elastic elements used in the pressure switch include a single-turn spring tube, diaphragm, bellows and bellows.

Extended reading: Miniature Pressure Switch

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Sino-Inst offers over 10 Electronic Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

It is widely used in hydropower, tap water, petroleum, chemical, machinery, hydraulic and other industries to measure, display and control the pressure of fluid media on site.

A wide variety of High Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of High Pressure Switch instrumentation, located in China.

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Vacuum Pressure Switch features a variety of diaphragm materials and adjustable pressure switch and connection options. The existing vacuum is measured via a sensor and issues an analog or digital switching signal.

YL-802 Vacuum Pressure Switch, also known as negative pressure switch, vacuum switch. The controller has delay control, reverse control, and three pressure unit switching. It can replace mechanical vacuum switches and vacuum controllers. It can be used for various vacuum levels Measurement.

Vacuum Pressure Switch features:

• It can realize the function of upper limit stop and lower limit start; (also can be reversed control)
• The start-up delay can be set to prevent the frequent start of the motor from causing damage;
• KPA, BAR, PSI pressure unit switching;
• One key reset function
• With the function of pipeline leakage protection
• Low power consumption, no more than 0.5W
• Vibration resistance, strong anti-interference, fast response and stable performance.

Specfications of Vacuum Pressure Switch YL-802

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What is a vacuum pressure switch?

Vacuum switch is a switch that detects the range of vacuum degree, also known as vacuum relay.

Its function is to automatically open and close the control circuit when the vacuum degree produced in actual work reaches the specified requirements. Send an electrical signal. Command the normal operation of the vacuum suction mechanism. It belongs to reliability and safety components.

Vacuum switches are divided into three types: mechanical, semiconductor and air bridge.

Mechanical vacuum switch uses mechanical displacement to determine the change of vacuum pressure, such as diaphragm vacuum switch.

The semiconductor vacuum switch uses a semiconductor pressure sensor to detect the change of vacuum pressure, and can directly convert the detected pressure signal into an electrical signal.

The setting of the vacuum pressure switch can only be carried out under the pressure value.

For example, if you need to operate at -0.02MPa, you must vacuum the pressure gauge to -0.02MPa. Then adjust the knob of the pressure switch. Close it, and then pump to -0.03MPa and slowly release the pressure. This is repeated many times to find the -0.02MPa point.

How does a vacuum pressure switch work?

The working principle of vacuum pressure switch:

When the vacuum pressure in the system is higher or lower than the set pressure, the pressure sensor in the controller will act immediately. Make the switch contacts in the controller open or close, and the equipment stops working at this time.

When the vacuum pressure in the system returns to the pressure range set by the equipment, the pressure of the controller is reset immediately. Make the switch contacts in the controller turn on or off, and the device works normally.

1. In fact, the vacuum switch is purely mechanical deformation that causes the micro switch to act. When the pressure increases, the vacuum switch acts on different pressure sensing components (diaphragm, bellows, piston) to produce deformation. Will move upward through mechanical structures such as railing springs. Finally, the top micro switch is activated to output the electrical signal.
2. The setting method of mechanical pressure switch is continuous displacement type from the functional principle. The set point can be set at a single point and can reach up to 3 different set points.
3. The vacuum switch has a variety of options for different ranges of absolute negative pressure and positive and negative pressure. While measuring the negative pressure, the vacuum switch can withstand a certain strength of positive pressure. It is widely used in the power industry.

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Sino-Inst offers over 10 Electronic Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

It is widely used in hydropower, tap water, petroleum, chemical, machinery, hydraulic and other industries to measure, display and control the pressure of fluid media on site.

A wide variety of Vacuum Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Vacuum Pressure Switch instrumentation, located in China.

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Low pressure switch adopts diaphragm sensor. The setting value of the controller is adjustable, and the adjustment range is -16KPa—2.5Mpa.

The Low pressure switch can be used for neutral gases such as air and liquid media such as water, hydraulic oil, lubricating oil, and light fuel oil. Low-pressure pressure switches are widely used in automobiles, water purifiers, power development and other fields. These fields are mainly used in low-voltage protection switches for automobiles, low-voltage switch appliances for power equipment, and low-voltage control switches used in pressure systems.

Features of low pressure switch

1. Mechanical switch, no need for power supply, easy to use
2. There are normally open and normally closed contacts
3. Adjustable pressure alarm point
4. Suitable for occasions with explosion-proof requirements
5. Easy to use, stable work and long mechanical life

Specifications of low pressure switch

Set value reference table

Remarks: ① The meaning of the pressure resistance value: even a short pressure peak cannot exceed this value.
② The corresponding external dimensions of the W-type controller are unified as ordinary: 01, explosion-proof: 04.

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Working principle of low pressure switch

When the system pressure and the rated pressure are too high or too low, the disc in the sensor will move instantaneously. Thereby, the switch joint is pushed on or off by the connected guide rod.

In short, it is compared with the rated value through the test situation of the measured pressure. When there is a change, a working effect will be produced, and the free end of the elastic element will be displaced. Push the switching element directly or after comparison. Change the on-off state of the switching element to achieve the purpose of controlling the measured pressure.

The commonly used components of pressure switches mainly include four categories: diaphragm, diaphragm, single coil spring tube and bellows.

Extended reading: Miniature Pressure Switch

The role of low pressure switch

Because pressure switches have relatively high accuracy and stable performance, low-pressure pressure switches are widely used in automobiles, water purifiers, power development and other fields. These fields are mainly applied to low-voltage protection switches of automobiles, low-voltage switch appliances of power equipment, and low-voltage control switches used in pressure systems.

Among them, in the automotive field, it means that when the voltage provided by the car to the on-board power supply is lower than how much, the power supply will automatically shut down to achieve a protection function. As a commonly used electrical component, low-voltage car switches can prevent damage to the power supply equipment of the car and ensure the normal ignition of the car.

The low-pressure switch in the pressure system achieves the working effect according to the water supply pressure of the entire system. It is mainly to cut off the entire circuit when there is no water or the pressure is too small to achieve the purpose of protecting the water pump.

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KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Explosion Proof Pressure Switches are designed for pressure control within harsh applications. The wiring contacts are sealed in a solid space through a solid sealed shell to achieve explosion-proof effect.

The explosion-proof construction provides superior protection, while its compact design allows for easy integration into custom equipment or systems. This model is ideal for pressure alarm, shutdown or control within hazardous areas when limited size and process compatibility are needed.

Features of Explosion Proof Pressure Switch

1. The operating point is stable and will not be affected by shock, vibration, temperature changes or other environmental conditions.
2. The contact will not shake due to pressure fluctuations, and the open or closed state is clear.
3. It is not affected by the impact of the pump and the vibration fatigue of the contact.
4. Long life, high stability and action repeatability.

Read more about: What Is the Difference Between Class 1 Div 1 and Class 1 Div 2 ?

Specifications of Explosion Proof Pressure Switch

Extended reading: Pressure indicator transmitters

Principle of Explosion Proof Pressure Switch

The working principle of the explosion-proof pressure switch is that the micro switch action caused by pure mechanical deformation.

When the pressure increases, the different sensing pressure components (diaphragm, bellows, piston) will be deformed. They will move upward through the railing spring and other mechanical structures. The top micro switch is activated. The electrical signal is output.

The setting method is divided into continuous displacement type and force balance type from the functional principle.

According to the principle, explosion-proof pressure switches can be divided into mechanical explosion-proof pressure switches and electronic explosion-proof pressure switches. The mechanical type is divided into ordinary and sealed types.

Extended reading: Miniature Pressure Switch

Explosion Proof Pressure Switch explosion-proof grade

• The explosion-proof mark of the domestic explosion-proof pressure switch is Ex. It can be used for llA, llB, and flammable dust environment in areas 20, 21, and 22 of gas, liquid or steam that have no corrosive effect on pressure-sensitive components;Applicable to hazardous locations in zone 1 and zone 2 of explosive gas environment;
• It is suitable for the environment where the temperature group is T1-T6.
• Automatic pressure control is realized in llC category T1~T6 hazardous gas mixture places.
• The current domestic explosion-proof pressure switch grade is ExedllCT6.

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Electronic Pressure Switch

Electronic Pressure Switch is a fully electronic structure. The front end adopts an oil-filled piezoresistive pressure sensor with isolation membrane. Through high-precision A/D conversion, microprocessor processing, on-site display. And output one analog quantity and four switch quantity plus 485 communication.
Extended reading: ​Solid flow meter | For bulk solids-powder-soybean-cement 

More Featured mechanical pressure switches

Sino-Inst offers over 10 Explosion Proof Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

It is widely used in hydropower, tap water, petroleum, chemical, machinery, hydraulic and other industries to measure, display and control the pressure of fluid media on site.

A wide variety of Explosion Proof Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Explosion Proof Pressure Switch instrumentation, located in China.

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Electronic Pressure Switches are pressure switches with digital display.

Electronic pressure switches have electronic pressure sensors instead of mechanical pressure sensors. Electronic pressure switch integrates pressure measurement, display, output and control. The non-electricity is directly converted into voltage or current through the pressure sensor. The sensor signal is processed. Finally, it is input to the microcontroller to drive the rear circuit or control the electrical switch. The user can determine the pressure value for the action of the pressure switch.

• Features
• Specifications
• Applications

Features of Electronic Pressure Switch YX-18

• Multi-channel switch (with load capacity 1.2A), analog signal 4～20mA optional;
• The pressure control switch point adjustment has no dead zone and can be set arbitrarily within the range;
• Delay switching output time can be set by yourself;
• Key-press adjustment and on-site setting of various parameters, easy to operate and more flexible.

Specifications of Electronic Pressure Switch YX-18

Working parameters	Model
	YX18-X	YX18-B	YX18-F
Connection method	G1/4(Can be customized)	M20*1.5(Can be customized)	M20*1.5(Can be customized)
Output function	Two switches + one analog	Two switches + one analog	Four switching  + one analog
voltage	External power supply: 24VDC±15%	External power supply: 24VDC±15%, ripple ≤±5%; 220VAC±15% (optional)
Contact rating	DC 24V—1.2A (resistive)	DC 24V—1A (resistive); AC 250V—3A (resistive)
control precision	≤±0.5%FS
Control range	-0.1～0～0.003～60MPa
Overload capacity	150%
Switch times	1×107
Protection level	IP65
Conditions of Use	Medium temperature: -30℃～85℃; Ambient temperature: -20℃～70℃; Relative humidity: 5～85%; storage temperature: -40℃～85℃

Electronic Pressure Switch Applications

From gas mechanics to hydraulic field, precision control field, pressure automatic control field. Electronic pressure switches can replace most of mechanical pressure switches, liquid level switches, pressure relays, electric contact pressure gauges and are used in some places.

Electronic Pressure Switch for Air Compressor

Pressure switches are often used in paper machines, air compressors or pump sets. In this type of equipment, we rely on pressure switches as safety devices, alarms or control elements in the system.

Take an air compressor (referred to as “air compressor”) as an example:
An ordinary air compressor consists of three main parts: a motor, a V-type air pump and an air storage tank. The air compressor is equipped with a pressure switch, which can adjust the start and stop of the motor. By adjusting the pressure in the oil tank, the air compressor can rest .

The air compressor factory can set a certain start and stop pressure according to the requirements of different customers during the debugging process. For example, when the compressor starts, air is pumped inside.

When the pressure reaches the set value, the pressure switch will contact the contacts to stop the motor. When the pressure is lower than the set value, the air compressor starts again. Keep the pressure in the oil tank within the pressure range.

Advantages of Electronic Pressure Switch

1. Display accuracy
   Intelligent pressure switch: 0.3%FS, 0.5%FS, 1%FS, 1.5%FS
   Mechanical pressure switch: panel display
2. Repeatability error
   Intelligent pressure switch: less than or equal to 0.5%FS
   Mechanical pressure switch: less than or equal to 1%FS, less than or equal to 1.5%FS
3. Shock resistance
   Intelligent pressure switch: good shock resistance
   Mechanical pressure switch: relatively poor shock resistance because it is filled with oil
4. Setting operation
   Intelligent pressure switch: power on, the zero pressure state can be operated by pressing the button, the setting range is the full range
   Mechanical pressure switch: need to be pressurized to the specified pressure, set with a screwdriver, setting range: 20%-80%FS
5. Contact type
   Intelligent pressure switch: PNP, NPN/solid state relay; this type of contact will not produce arcing, contact carbon deposits, etc.
   Mechanical pressure switch: micro switch, will oxidize

Extended reading: Miniature Pressure Switch

Disadvantages of Electronic Pressure Switch

The advantages of the intelligent pressure switch are mentioned above, and the disadvantages of the smart pressure switch are mainly complicated in wiring. 4 or more, need power supply to use. There may be interference when encountering strong electricity.

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• Low Cost Differential Pressure Sensor – Solve Big Problems!
• Oxygen Cleaning Pressure Sensor – No Oil, No Corrosion, No Impurities
• Voltage Pressure Transducer Comparison

Sino-Inst offers over 10 Electronic Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

It is widely used in hydropower, tap water, petroleum, chemical, machinery, hydraulic and other industries to measure, display and control the pressure of fluid media on site.

A wide variety of Electronic Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Electronic Pressure Switch instrumentation, located in China.

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Waterproof pressure switch is also called waterproof pressure switch. It can be weatherproof for external use.

Waterproof micro pressure switch can meet the pressure control in harsh environment and the place with limited installation space. It is used for pressure alarm, parking or control system, etc. Stainless steel pressure diaphragm, waterproof and moisture-proof.

Features of Waterproof Pressure Switch PC-500

• All stainless steel structure, increased pressure range, anti-corrosion and moisture-proof.
• The working pressure can be manufactured according to user requirements (-14.5~3600PSI).
• Using laser welding process equipment, superior sealing performance.
• The contacts are all silver-plated, and the special products are silver contacts (industrial grade). Work is stable and reliable.
• The electrical contacts of the switch have a long working life (more than 100,000 times) and excellent shock resistance.
• It is made of internationally advanced stainless steel pressure sensor (stainless steel bellows, stainless steel diaphragm).
• It has excellent qualities such as small size, convenient installation, accurate pressure control, and stable performance.
• 316SS shell protection.
• Factory set or adjustable set point on site.

Specifications of Waterproof Pressure Switch PC-500

PC500 series waterproof stainless steel pressure switch model list

What does a pressure switch do on a water pump?

The pressure switch installed in the inlet pipe is designed to prevent the pump from cavitation and evacuation. When the inlet pressure is lower than the set value, it will give a control signal and automatically take measures or give an alarm.

How to tell if well pump pressure switch is bad?

Check whether the pressure switch has the above functions → the pressure in the water pipe decreases to the set value → the switch turns on the pump; the pressure in the water pipe increases to the set value → the switch disconnects and stops the pump (the water pipe must be equipped with a check valve).

The so-called setting value is the required upper and lower pressure value.

If the switch cannot achieve the above functions, 1. Wiring error; 2. Switch failure.

Adjustable Deadband Pressure Switch

In the use of pressure switches, differential pressure switches, flow switches or temperature switches, there will be a ‘Deadband’ term.

The so-called Deadband is the difference between the values ​​corresponding to the switch-off and switch-on values.

Taking the pressure switch as an example, the Deadband is 0.1MPa. The switch setting value is 1MPa, and the switch is closed when it rises. When the pressure is 0, the switch is off. When the pressure rises to 1MPa. The switch will close.

After closing, when will the switch open again?

Normally, when the switch is closed, the pressure will decrease. When the pressure drops to 1MPa-switch dead zone=1-0.1MPa=0.9MPa. The switch will open again.

If the switch action point is set at 0.7MPa, it will be 0.6MPa when the switch returns to action.

The so-called fixed Deadband means no matter how much pressure you set the action point of the pressure switch to. The value it returns will be smaller (or higher) than the set pressure value by a dead zone value.

The so-called adjustable Deadband is that you can set the size of the value when the switch returns. For example, the adjustable dead zone is 0.05-0.1MPa, and the set value is 1MPa. Then I can make the switch return to action at any value between 0.9MPa-0.95MPa.

differential pressure switch

Differential pressure switches are also called differential pressure controllers. It is to use the pressure difference between the two pressure guiding pipes to issue an electrical signal (switch contact signal). When the pressure difference between the two ends of the series pressure guiding liquid pipe increases (or decreases) and exceeds the set value of the differential pressure controller, the micro switch inside the differential pressure switch sends a signal to control the reversing valve reversing or monitor the lubrication system. The valve then opens up (or closes down). Therefore, the pressure difference between the two ends of the system liquid pipe is reduced. achieve the normal operation of the system.

atex pressure switch

Explosion Proof Pressure Switches are designed for pressure control within harsh applications. The wiring contacts are sealed in a solid space through a solid sealed shell to achieve explosion-proof effect.

The explosion-proof construction provides superior protection, while its compact design allows for easy integration into custom equipment or systems. This model is ideal for pressure alarm, shutdown or control within hazardous areas when limited size and process compatibility are needed.

sealed pressure switch

Encapsulated and sealed fast micro switch, which can be divided into single pole double throw or double pole double throw output. In general dangerous occasions and corrosive environments, it is most practical to choose this series of switches. With an internal scale adjustment mechanism, it is convenient for customers to calibrate the set point on site. It has a compact structure and can be widely used in water supply and sewage treatment, papermaking, food and petrochemical, pharmaceutical and other industries.

Extended reading: Miniature Pressure Switch

More Featured Pressure Switches

Sino-Inst offers over 10 Waterproof Pressure Switches for pressure measurement.

It is widely used in hydropower, tap water, petroleum, chemical, machinery, hydraulic and other industries to measure, display and control the pressure of fluid media on site.

A wide variety of Waterproof Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Pressure Switch instrumentation, located in China.

You may like:

• Pressure Transducers for Air Conditioning & Refrigeration
• Analog Pressure Transducers vs Digital Pressure Transducers | How to Choose?
• Vacuum Pressure Transducers | Product List and FAQs
• What Is Psi in Pressure Sensor?
• What Is a Hydraulic Pressure Transducer? and Product List
• Pressure Transmitter Installation Guide
• What Is Pressure Transducer Output Signal? and Types
• Optimize Filtration Monitoring with Differential Pressure Sensors
• Low Cost Differential Pressure Sensor – Solve Big Problems!
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KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Adjustable Pressure Switch is a mechanical diaphragm pressure switch. Use stainless steel pressure diaphragm.

Adjustable Pressure Switch is mainly suitable for neutral gases such as air, gas, water vapor and liquid media such as water, refrigerant, oil, etc., and can be used in vacuum. Can be used for air compressors, water pumps, etc.

Specifications of Adjustable Pressure Switch PC-400

If users have special requirements, they can be customized according to the provided samples, drawings, technical parameters, etc.

PC400 series adjustable stainless steel pressure switch model table

Adjustable pressure switch for air compressor

The air compressor pressure switch can adjust the start and stop of the air compressor. Through the pressure adjustment in the air tank, let the air compressor rest and maintain it.

When the air compressor factory is debugging, it can be adjusted to a certain pressure according to the needs of different customers, and then set a good difference.

For example, when the compressor starts, pump air into it, and when the pressure reaches 20 kg, the air compressor is unloaded or stopped.

When the pressure is 14 kg, the air compressor starts again, but it will have a pressure difference, so you can let it rest at this time.

Extended reading: Miniature Pressure Switch

How to adjust the air compressor pressure switch?

Pressure level adjustment. Use pressure to adjust the screw clockwise to increase its pressure. On the contrary, the acting pressure is low, indicating that its pressure difference remains unchanged.

Use pressure to adjust the screw in 1 clockwise, so that it will rise under its action. On the contrary, the acting pressure decreases, indicating that its pressure will not change.

When the air compressor is set to pressure or running, it means that the vent valve is saturated, and the valve will discharge the gas in the steel pipe. Of course, this is a normal phenomenon and you don’t need to worry.

When adjusting the pressure, do not exceed the pressure range of the compressor, but proper exhaust is necessary.

Besides pressure sensors, we also supply torque sensors. What Is a Torque Transducer? How to Choose?

Adjustable pressure switch for water pump

The working principle of the water pump pressure controller:
The working medium (oil, gas, and water) directly acts on the metal diaphragm. The deformation of the metal diaphragm reflects the pressure of the working medium. Simultaneously output detection signals or control signals.

Extension of knowledge points:
The water pump pressure controller is generally a metal 316L diaphragm sensor, which can be used for neutral oil, gaseous media and water.
The setting value of the controller is adjustable, and the range of adjustment range -0.1~40MPa is optional.

Adjustment method of water pump pressure controller:

1. Adjust the pressure limit to 1.5MPa (upper switching value) and send out a contact signal. The operation steps:
   • Open the cover and loosen the locker.　　
   • Turn the setting value adjustment screw clockwise to make the setting value change from large to small until the switch contacts switch at 1.5MPa.　　
   • Tighten the locker.　
     　
2. Adjust the lower limit of pressure to 0.5MPa (lower switching value) to send out a contact signal, the operation steps:
   • Open the cover and loosen the locker.　　
   • Rotate the setting value adjustment screw counterclockwise to make the setting value change from small to large until the switch contacts switch at 0.5MPa.　　
   • Tighten the locker.

More Featured Pressure Switches

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• Low Cost Differential Pressure Sensor – Solve Big Problems!
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• Voltage Pressure Transducer Comparison

Sino-Inst offers over 50 Adjustable Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

A wide variety of Adjustable Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Adjustable Pressure Switch instrumentation, located in China.

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com

Manual Reset Pressure Switch is suitable for semi-automatic operation. Control high pressure end and the low pressure end of the system at the same time.

Manual Reset Pressure Switch uses international advanced stainless steel pressure diaphragm with high accuracy. Small size, easy installation and use, high and low pressure integrated design. It can simultaneously control the pressure of the high pressure end and the low pressure end of the system. Manual reset, suitable for semi-automatic operation occasions.

Features of Manual Reset Pressure Switch

1. Manually push the reset switch to meet special working conditions
2. Working pressure can be manufactured according to user requirements (30-800PSI)
3. Using laser welding process equipment, excellent sealing performance
4. The contacts are all silver-plated, and the special products are silver contacts (industrial grade), which are stable and reliable.
5. Long working life of switch electrical contacts (more than 100,000 times), excellent shock resistance

Specifications of Manual Reset Pressure Switch

PC200 series manual reset pressure switch model list:

Manual Reset High Pressure Switch

The controller adopts a piston type sensor, which is divided into three types: with a drain port, a non-leak piston and a combination of a piston type and a diaphragm type.

It can be used for compressed air containing oil mist and other gas containing oil mist that has no corrosive effect on the pressure sensor material, hydraulic oil, water-oil emulsion and neutral liquid medium with good lubricating performance.

The setting value of the controller is adjustable, and its adjustment range is 0.3-40MPa.

Extended reading: Miniature Pressure Switch

How does a pressure switch work?

The force switch is a simple pressure control device. When the measured pressure reaches the rated value, the pressure switch can send out an alarm or control signal.  

The working principle of the pressure switch is: when the measured pressure exceeds the rated value, the free end of the elastic element is displaced, and the switch element is pushed directly or after comparison to change the on-off state of the switch element to achieve the purpose of controlling the measured pressure.  

The elastic elements used in the pressure switch include a single-turn spring tube, diaphragm, bellows and bellows.    

Switching elements include magnetic switches, mercury switches, micro switches, etc.    

There are two types of pressure switches: normally open and normally closed.

Extended Reading: Electronic Pressure Switch for Air Compressor

How do you test a pressure switch?

Calibration method of pressure switch:

1. Find out the action setting value of the tested instrument according to the specification.
2. Select an appropriate pressure signal source to pressurize the test meter. A standard pressure gauge with an appropriate range detects the signal pressure. Use a multimeter to measure the on and off states of the contacts.
3. For the high report switch, slowly increase the pressure from low to high, and observe the multimeter. When the multimeter indicates a sudden change, the evaluation of the standard pressure gauge is the high reported value.
   Then slowly lower the pressure. When the multimeter indicates a sudden change again, the evaluation of the standard pressure gauge is the reset value.
4. For the under-report switch, the test pressure should be increased above the set value first, and then slowly decreased.
   When the multimeter indicates a sudden change, the evaluation of the standard pressure gauge is a low value.
   Press again slowly, and when the multimeter indicates a sudden change again, the indication value of the standard pressure gauge is the reset value.

Miniature Pressure Switch PC-100

Miniature pressure switch is also called compact pressure switch, or micro pressure controller. Designed specifically for OEM applications. A variety of threads are available.

You may like:

• Pressure Transducers for Air Conditioning & Refrigeration
• Analog Pressure Transducers vs Digital Pressure Transducers | How to Choose?
• Vacuum Pressure Transducers | Product List and FAQs
• What Is Psi in Pressure Sensor?
• What Is a Hydraulic Pressure Transducer? and Product List
• Pressure Transmitter Installation Guide
• What Is Pressure Transducer Output Signal? and Types
• Optimize Filtration Monitoring with Differential Pressure Sensors
• Low Cost Differential Pressure Sensor – Solve Big Problems!
• Oxygen Cleaning Pressure Sensor – No Oil, No Corrosion, No Impurities

Sino-Inst offers over 50 Manual Reset Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

A wide variety of Manual Reset Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Manual Reset Pressure Switch instrumentation, located in China.

KimGuo11

Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.

Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.

drurylandetheatre.com