Question 1

Variable Pressure Control Solution from Ultra-High Vacuum to Normal Pressure

Accepted Answer

1. What is Atomic Force Microscope?

Atomic Force Microscope is a precision instrument that can choose different working environments such as vacuum environment, atmosphere environment, liquid environment and variable temperature environment, and is based on detecting the weak interaction between the tested sample and the probe to study the surface morphology and physical and chemical properties of the material. Atomic force microscopes must have vacuum and atmosphere environment functions mainly due to the following application requirements:

(1) As we all know, the interaction force between atoms is very small. When AFM is working, in order to maintain the force between the two, the distance between the probe and the sample is very close, usually only a few nanometers or dozens of nanometers, which places very high demands on the environment around the instrument. Atomic force microscopes currently on the market operate in ordinary air environments. However, due to the active presence of various gas molecules, various mechanical vibrations and electromagnetic interference in the air, it is still difficult to obtain extremely high resolution. If you want to use atomic force microscopes to truly obtain atomic-level resolution, you still need to work in vacuum and ultra-high vacuum environments.

(2) With the gradual deepening of research at the micro-nano scale, in many studies, it is necessary to carry out in situ in the same experimental area on the sample surface in a vacuum environment or the same atmosphere environment (such as nitrogen, oxygen, humidity, alcohol vapor, etc.) A variety of different detection experiments (such as friction energy dissipation measurement, which requires the replacement of other probes with different functions without damaging the working environment to reach in-situ detection).

(3) In some micro-nanoscale studies, force spectrum measurement results under different vacuum degrees and different atmospheres show that the adhesion force between the AFM tip and the material under study significantly depends on the vacuum pressure and gas to which it is exposed.

In short, in order to make the atomic force microscope have an environmentally controllable function, the key is to solve the problem of precise control of the vacuum degree and environmental atmosphere of the atomic force microscope.

2. How to solve the problem?

For different vacuum degree ranges, KaoLu’s Proportional Pressure Regulator with small air intake flow rates and KaoLu’s Proportional Pressure Regulator with larger flow rates are used.

The entire vacuum pressure closed-loop control system is divided into the following four gas pipelines, each with the following functions:

(1) Low vacuum range (10mBar~1Bar): In the low vacuum range, the first channel of the dual-channel vacuum pressure controller collects the vacuum measurement signal of the 1000Torr capacitive vacuum gauge (measurement accuracy 0.25%)

(2) High vacuum range (0.01mBar~10mBar): In the high vacuum range, the second channel of the dual-channel vacuum pressure controller collects the vacuum measurement signal of the 10Torr capacitive vacuum gauge (measurement accuracy 0.25%), and compares it with the device.

After comparing the fixed values, KaoLu’s Proportional Pressure Regulator is driven, and the air intake flow is adjusted by quickly changing the opening of KaoLu’s Proportional Pressure Regulator, thereby reaching control accuracy within 1% in the high vacuum range. It should be noted that when controlling the high vacuum range, the electric ball valve on the exhaust pipeline must always be in a fully open state.

High vacuum range (10mBar~0.01mBar): In the ultra-high vacuum range, the vacuum pressure controller collects the vacuum measurement signal of the ionization vacuum gauge (measurement accuracy 15%), and drives the electric variable leakage after comparing it with the set value valve, by quickly changing the inlet flow of the leakage valve, thereby achieving control accuracy within 15% within the ultra-high vacuum range.

In the process of controlling vacuum pressure, in order to achieve high-precision control, the following components need to meet the corresponding technical specifications:

(1) Vacuum degree sensor: The measurement accuracy of the vacuum degree sensor is one of the key indicators that determine the control accuracy. This solution uses a thin film capacitive vacuum gauge with an accuracy of 0.25% in the low vacuum and high vacuum ranges, and in the ultra-high vacuum range Used in high vacuum range

An ionization vacuum gauge with an accuracy of up to 15% has been developed.

(2) Valves: The adjustment accuracy and speed of various intake and exhaust valves are also key indicators that determine the control accuracy.

KaoLu’s Proportional Pressure Regulator used all have very good adjustment accuracy, and the response speed is less than 1 second.

Within the range, the response speed of the variable leakage valve can reach more than ten microseconds, which can fully meet the air intake control of ultra-high vacuum.

(3) Vacuum pressure controller: The collection accuracy, adjustment output accuracy and linearization processing functions of the vacuum pressure controller are also

The key indicator that determines control accuracy, the solution uses KaoLu’s Proportional Pressure Regulator which can reach precise control of full-scale vacuum.

In summary, KaoLu’s Proportional Pressure Regulator can reach accurate control of any vacuum pressure set point in the environment-controlled atomic force microscope from ultra-high vacuum to full vacuum of one atmosphere, and can also be controlled according to the set vacuum degree. The change curve is program controlled. In addition, this solution can be applied to precise control of vacuum and atmosphere environments of various microscopes.

Question 2

Precise Control Solution of Temperature and Air Pressure

Accepted Answer

Pressure sensitive paint surface pressure measurement technology is an aerodynamic optical measurement technology developed in the late 1980s. Compared with the measurement technology based on discrete pressure measuring holes, PSP, as a non-contact pressure measurement technology, can obtain the full-field pressure distribution of the measurement surface at a long distance, avoiding damage to the model and interference with the flow field.

It also has the characteristics of high spatial resolution and data acquisition rate. It has a wide range of application prospects in aerospace, automobile manufacturing and impeller machinery, and is regarded as one of the most promising wind tunnel test technologies in the 21st century.

The performance evaluation of pressure sensitive paint or coating is divided into two methods: static and dynamic:

(1) Static characteristic test: This refers to the performance test of the pressure sensitive coating under static or very slowly changing pressure conditions. This test is usually used to evaluate the sensitivity of the coating, that is, the degree of response of the coating after pressure is applied. Static characteristic test also includes testing the sensitivity of the coating at different temperatures.

(2) Dynamic characteristic test: This refers to the performance test of the pressure sensitive coating under dynamic or rapidly changing pressure conditions. This test is usually used to evaluate the response speed of the coating, that is, the ability of the coating to respond to rapidly changing pressure.

Recently, a user has proposed the need for static property testing of pressure-sensitive coatings, requiring precise control of vacuum pressure and temperature on the static property testing instrument, and providing a controllable vacuum pressure, oxygen concentration and temperature environment for the pressure-sensitive coating. The indicators are as follows:

(1) Single-sided heating of a square metal sheet coated with a pressure-sensitive coating. The entire sheet sample is placed in a closed cavity with an optical window on the top, and the vacuum pressure in the cavity is required to be accurately controlled.

(2) Sample size: 50mm×50mm×5mm.

(3) Sample temperature: -10~80℃, temperature control accuracy ±0.1℃.

(4) Vacuum pressure: absolute pressure 1Pa~600kPa, accuracy ±1% of reading.

(5) Oxygen concentration: 0~80%, accuracy ±1%.

This article will propose a precise control solution for temperature, air pressure and atmosphere environment of the static property testing device of pressure-sensitive coatings in response to the technical requirements proposed by the above users, providing accurate control of various temperatures and variable vacuum pressures for the testing device.

From the above technical requirements, it can be seen that the environmental control variables required for the static characteristic test of the pressure-sensitive coating are temperature, vacuum pressure (positive and negative pressure) and oxygen concentration, and these three variables are required to have different adjustable values.

To this end, this solution will use the following three independent technologies to reach precise control of these three variables:

(1) Temperature control: Using TEC semiconductor refrigeration technology based on the Peltier principle, this temperature control technology is currently more suitable for heating and cooling technology in the temperature range of -10~80℃, with high accuracy, fast response speed, easy implementation and simple structure.

(2) Vacuum pressure control: Using dynamic balance method technology, by controlling the gas flow entering and exiting the test chamber, the intake and exhaust flow rates are dynamically balanced, thereby achieving accurate and constant control of the vacuum pressure set arbitrarily in the wide range of 1Pa~600kPa (absolute pressure).

(3) Oxygen concentration control: Using gas mass flow control technology, the flow rates of oxygen and other environmental gases are controlled separately, thereby reaching precise control of the oxygen concentration in the mixed gas.

It should be noted here that in the dynamic balance method vacuum pressure control process, for the higher air pressure range with an absolute pressure in the range of 1kPa~600kPa, the downstream control mode is required to obtain higher control accuracy, that is, the opening of the fixed intake electric control needle valve is kept constant to keep the intake flow constant, and the vacuum pressure control is performed by quickly and automatically adjusting the opening of the downstream exhaust Proportional Pressure Regulator.

For the low-pressure and high-vacuum range with an absolute pressure below 1kPa, the upstream control mode is required to achieve higher-precision control, that is, the exhaust Proportional Pressure Regulator is fully opened to allow the vacuum pump to extract the gas in calibration chamber at full speed, and vacuum degree is controlled by quickly and automatically adjusting the opening of upstream intake Proportional Pressure Regulator.

In order to reach separate adjustment of the two Proportional Pressure Regulators, the solution is equipped with KaoLu’s Proportional Pressure Regulator. The two independent control channels can be used to operate the upstream and downstream control modes respectively, and perform independent PID automatic control or manual control. This controller also comes with computer software, which can be remotely set and operated through the host computer.

To accurately control the oxygen concentration or oxygen proportion. By mixing the various working gases after precise measurement in the mixing tank and then entering the calibration chamber, the oxygen partial pressure in the calibration chamber can be accurately controlled. In the process of oxygen concentration control, the following two points should be paid special attention to:

(1) For a certain single working gas, a gas mass flow controller of the corresponding gas is required.

(2) The pressure of the mixing tank should be constantly controlled or a pressure reducing valve should be added at the outlet of the mixing tank to keep the outlet pressure of the mixing tank stable. This is very important for accurately controlling the vacuum pressure in the calibration chamber.

In summary, this solution can well meet the various technical requirements proposed by users, and has high control accuracy and automatic control capabilities. In addition, this solution also has the following characteristics:

(1) This solution has strong applicability. By changing the parameter indicators of the relevant components, it can be applied to the static characteristics test needs of pressure-sensitive coatings with different control ranges.

(2) The temperature and vacuum pressure controllers used in the solution come with computer software, which can be used to debug and operate the entire control system directly through the computer screen, and the various process parameter change curves in the control process are automatically stored. In this way, there is no need to write any control software to quickly build a temperature and vacuum pressure control system, which greatly facilitates the calibration of the static characteristics of pressure-sensitive coatings.

If you're interested in our Proportional Pressure Regulator, please contact us!

Question 3

Solution of Vacuum Pressure Precision Control for Microscope Probe Hot and Cold Stages

Accepted Answer

The probe hot and cold stage can perform temperature control and transmitted light/reflected light observation of the sample at the same time, supporting sample movement within the cavity, airtight/vacuum cavity, infrared/ultraviolet/X-ray and other band observations, electrical binding posts in the cavity, and temperature control Linked shooting, vertical/horizontal light path, inverted microscope, etc., widely used in microscopes, inverted microscopes, infrared spectrometers, Raman meters, X-rays and other instruments, suitable for polymers/liquid crystals, materials, spectroscopy, biology, medicine, geology, food , freeze-drying, X-ray diffraction and other fields.

In the microscopic measurement and research of the above-mentioned material structure, organization and manufacturing process, it is generally necessary to provide the sample with the required complex environment such as temperature, vacuum, pressure, atmosphere, humidity and light.

However, various existing probe hot and cold stages can only provide the required temperature change control. Although the probe hot and cold stage can provide good sealing, it still lacks the ability to adjust and control vacuum, pressure, atmosphere and humidity.

In order to reach accurate control of vacuum pressure, atmosphere and humidity of the probe hot and cold stage, this article proposes corresponding solutions. The solutions mainly focus on vacuum pressure and atmosphere control issues to solve the lack of supporting equipment.

How to solve the problem?

For precise control of the vacuum pressure and atmosphere of the microscope probe hot and cold stage, the technical indicators that this solution can achieve are as follows:

(1) Vacuum pressure: absolute pressure range 0.1Torr~1000Torr, control accuracy is ±1% of reading.

(2) Atmosphere: single gas or a mixture of multiple gases, and the gas concentration control accuracy is better than ±1%.

This solution will use the following two independent technologies to reach precise control of vacuum pressure and atmosphere:

(1) Vacuum pressure control: Using dynamic balance method technology, by controlling the gas flow entering and exiting the test chamber.

(2) Atmosphere control: Use gas mass flow control technology to control the flow of multiple working gases respectively, thereby reaching the mixing ratio in ambient gas.

The vacuum pressure control system consists of an inlet KaoLu’s Proportional Pressure Regulator, a high vacuum gauge, a low vacuum gauge, an exhaust KaoLu’s Proportional Pressure Regulator, a high vacuum pressure controller, a low vacuum pressure controller and a vacuum pump, and through the following two high and low vacuum pressure control loop to precisely control full-scale vacuum pressure:

(1) High vacuum pressure control loop: The vacuum pressure control range is 0.1Torr~10Torr (absolute pressure). The control method adopts the upstream control mode. The control loop consists of KaoLu’s Proportional Pressure Regulator, a high vacuum gauge and vacuum pressure program controller.

(2) Low vacuum pressure control loop: The vacuum pressure control range is 10Torr~1000Torr (absolute pressure). The control method adopts the downstream control mode. The control loop consists of an exhaust KaoLu’s Proportional Pressure Regulator, low vacuum gauge and vacuum pressure program controller.

It can be seen from the above that the control of full-scale vacuum pressure is covered by two different ranges of thin film capacitance vacuum gauges. This type of thin film capacitance vacuum gauge can easily reach a reading accuracy of 0.25%. The vacuum signal collected by vacuum gauge is transmitted to the vacuum pressure controller. After comparing the set value with measurement signal, the controller calculates PID algorithm and outputs a control signal to drive KaoLu’s Proportional Pressure Regulator to change the air intake or exhaust flow. This enables precise control of the air pressure in the calibration chamber.

In the specific control process of full-scale vacuum pressure, upstream and downstream control modes need to be adopted respectively, as follows:

(1) For the control of high vacuum pressure range of absolute pressure 0.1Torr~10Torr, first set the opening of KaoLu’s Proportional Pressure Regulator to a fixed value, and automatically adjust the air inlet needle by operating the high vacuum control loop valve opening to reach the vacuum pressure set value.

(2) For the control of low vacuum pressure range of absolute pressure 10Torr~1000Torr, first set the opening of intake needle valve to a fixed value, and automatically adjust the opening of exhaust needle valve by operating the low vacuum control loop to reach the vacuum pressure set value.

(3) Vacuum pressure changes within the full range can be programmed and controlled according to the set curve. The control is operated by the computer software that comes with the vacuum pressure controller, and the process parameters and time-varying curves are displayed and stored at the same time.

In summary, this solution can completely solve the vacuum pressure control problem of the microscope probe hot and cold stage by using KaoLu’s Proportional Pressure Regulator, and has high control accuracy and automatic control capabilities.

Question 4

Solution of Vacuum Control for Testing System

Accepted Answer

What’s surface flashover?

Surface flashover refers to the phenomenon of penetrating breakdown discharge formed at the interface between insulating materials and medium such as air and vacuum. Since the discharge voltage of surface flashover is much smaller than the breakdown discharge voltage of insulating materials, surface flashover has become one of the main forms of electrostatic discharge on the surface of spacecraft in space environment, which poses a serious threat to the safety of spacecraft. Therefore, it is highly valued for its research and testing.

In particular, in view of the complexity of space environment in which spacecraft are located, Taiwan has also established a spacecraft surface charging simulation system, and used polyimide, a common insulating material for spacecraft, as a typical research object to study the surface flashover characteristics of polyimide and other new materials in low-pressure environments, providing a basis for the design of spacecraft electrostatic protection.

However, the established low-pressure environment surface flashover test device has the problem of being unable to control the vacuum degree with high precision, which will bring large errors to the surface flashover measurement, and will also cause serious impacts on the research of influencing factors such as desorbed gas, roughness, and chemical changes, which is not conducive to the accurate evaluation of surface flashover performance and related factors in the process of new material research and development.

In view of the problems in existing surface flashover test device, the user proposed to carry out technical transformation of the vacuum control system of the test device. Therefore, this article proposed a technical transformation plan by using KaoLu’s Proportional Pressure Regulator based on the user's technical requirements to reach accurate simulation of low-pressure environment within the full vacuum range and effectively improve accuracy of the surface flashover performance test.

How can KaoLu’s Proportional Pressure Regulator solve the problem?

(1) KaoLu’s Proportional Pressure Regulator has strong applicability and scalability. By changing the parameter indicators of the relevant components, it can be applied to different ranges of vacuum pressure and achieve precise control of vacuum levels.

(2) KaoLu’s Proportional Pressure Regulator reach vacuum control under different working gases by changing the high-pressure gas source, and can also control the low-pressure environment after mixing multiple gases, which has great flexibility.

(3) KaoLu’s Proportional Pressure Regulator has own computer software, and the entire control system can be debugged and operated directly through the computer screen. The various process parameter change curves during the control process are automatically stored, so there is no need to write any control software to quickly build a control system, which greatly facilitates the construction and test research of the experimental device.

Question 5

Solution of Precise Control of Vacuum Pressure

Accepted Answer

Resin-based fiber composites are used as high-performance thermal insulation materials in applications such as industrial furnaces, fire protection, batting materials, and heat shields for high-speed spacecraft. These high-porosity materials effectively protect the underlying structure from surrounding heat sources by providing a gas buffer at high temperatures, while their low density minimizes the payload mass of high-speed spacecraft.

Due to the high porosity of resin-based fiber composites, gases can easily flow through the ablative material. For example, the pyrolysis gases produced by the decomposition of phenolic resins will pass through the charred structure before leaving the material and may react with the fibers. Similarly, reactants from the boundary layer can enter the material microstructure and flow within the pores. This gas transport has a significant impact on the overall material response.

This flow behavior through porous structures is often characterized by permeability, which is a key material performance parameter when simulating porous media flow because permeability controls the momentum transfer within the medium. The measurement of material permeability, especially the permeability of materials tested at high temperatures, generally adopts the steady-state method, that is, a stable pressure difference is applied between the upstream and downstream ends of the sample, and the permeability is calculated according to Darcy's law by measuring the flow gas flowing through the sample.

The steady-state method for measuring the high-temperature permeability of fiber composite materials, and provided a schematic diagram of the test system structure, but did not provide an explanation on how to form a stable and high-precision pressure difference, which is precisely the key to the steady-state permeability test.

In order to truly implement the steady-state high-temperature permeability test method, especially to simulate the interstellar environment to establish a wide-range adjustable and accurately stable vacuum pressure difference on both sides of the sample being tested, this article proposes the following vacuum pressure control solution.

For the vacuum control of upstream and downstream buffer chambers, two identical vacuum control systems are equipped. Each control system mainly consists of two thin film capacitor vacuum gauges, two electric control needle valves and a dual-channel vacuum pressure controller. The specific models and indicators are as follows:

(1) Thin film capacitor vacuum gauge: range 1Torr and 1000Torr, measurement accuracy is ±0.25% of the reading.

(2) Electric control needle valve: model NCNV-20 and -120, linearity 0.1~2%, repeatability 1%, response time 1 second.

(3) Dual-channel vacuum pressure controller: independent dual channels, 24-bit AD, 16-bit DA and 0.01% minimum output power percentage, RS485 communication interface with PID parameter self-integration and MODBUS standard protocol, and equipped with computer software.

During the vacuum control process of each buffer chamber, the specific operation steps need to pay attention to the following:

(1) For control in the low vacuum range of 10~1000Torr, the exhaust adjustment mode is adopted, that is, KaoLu’s Proportional Pressure Regulator responsible for air intake flow regulation is controlled to a fixed opening to make the air intake flow constant, and then the electric control needle valve responsible for exhaust flow regulation is automatically controlled.

(2) For control in the high vacuum range of 0.1~10Torr, the air intake adjustment mode is adopted, that is, KaoLu’s Proportional Pressure Regulator responsible for exhaust flow regulation is controlled to a 100% fixed opening to exhaust at full speed, and then the electric control needle valve responsible for air intake flow regulation is automatically controlled.

(3) The dual-channel vacuum pressure controller has two independent PID automatic control channels, in which a 10Torr range vacuum gauge is connected to the first input channel, a 1000Torr range vacuum gauge is connected to the second input channel, the first output channel is connected to the electric control needle valve responsible for air intake, and the second output channel is connected to KaoLu’s Proportional Pressure Regulator responsible for exhaust.

KaoLu’s Proportional Pressure Regulator has the following advantages and characteristics:

(1) KaoLu’s Proportional Pressure Regulator is more practical and can reach constant control of upstream and downstream pressures of the sample. The pressure difference between the two ends of sample can be set and adjusted arbitrarily, which is more in line with the steady-state permeability test model.

(2) KaoLu’s Proportional Pressure Regulator has strong applicability and scalability. For example, by changing the parameter indicators of the relevant components, it can be applied to vacuum pressures in different ranges, and reach precise control of different pressure differences and their corresponding permeability tests.

(3) KaoLu’s Proportional Pressure Regulator can reach permeability measurement under different working gases by changing the high-pressure gas source, and can also perform vacuum pressure difference control and oxidation performance tests after mixing multiple gases, which has great flexibility.

(4) More importantly, KaoLu’s Proportional Pressure Regulator leaves an interface channel for subsequent residual gas sampling and analysis, which can be conveniently connected to the mass spectrometer and the micro-flow variable leak valve, so that the mass spectrometer can analyze the gas flowing through the sample under test.

(5) The vacuum pressure control in the solution comes with computer software, which can be used to debug and operate the entire control system directly through the computer software interface. The various process parameter change curves during the control process are automatically stored. In this way, there is no need to write any control software and the control system can be quickly built, which greatly facilitates the construction of the experimental device and test research.

Question 6

KaoLu's Proportional Pressure Regulator is your best choice

Accepted Answer

KaoLu's Proportional Pressure Regulator is your best choice!
It can successfully apply on laser cutting machine, blow molding machine......,etc.

KaoLu proportional valve has excellent quality and reliability.

It can ensure the stable operation of your machine.

Choose KaoLu’s excellence and innovation, will bring better result to your application!

Question 7

What Is the Difference Between a Proportional Valve and a Directional Valve?

Accepted Answer

In fluid control systems, both proportional valve and directional valve play crucial roles in regulating flow and pressure. However, their functions and applications differ significantly. Understanding the differences between these two types of valves is essential for selecting the right component for industrial applications.

What Is a Proportional Valve?

A proportional valve is designed to control flow or pressure in a continuous and adjustable manner. Unlike traditional on/off solenoid valves, proportional valves allow for fine-tuned adjustments based on an electrical input signal, making them ideal for applications requiring precise control.

Key Features of Proportional Valves:

Provides variable control instead of just open/closed positions.
Operates using an electrical signal that modulates valve opening.
Ensures smooth and accurate pressure or flow regulation.
Commonly used in laser cutting, blow molding, medical, and semiconductor industries.

Common Applications of Proportional Valves:

Laser Cutting Machines: Regulates gas pressure for precise cutting performance.
Blow Molding Machines: Maintains stable air pressure for uniform plastic molding.
Medical Equipment: Ensures controlled airflow for respiratory and diagnostic devices.

What Is a Directional Valve?

A directional valve, also known as a directional control valve, is used to control the direction of fluid flow within a hydraulic or pneumatic system. These valves typically have multiple ports and shift fluid flow between different pathways based on their actuation.

Key Features of Directional Valves:

Controls the direction of fluid flow rather than its pressure or flow rate.
Operates in discrete positions (e.g., open, closed, forward, reverse).
Can be manually, electrically, or hydraulically actuated.
Commonly used in hydraulic machinery, pneumatic automation, and industrial equipment.

Common Applications of Directional Valves:

Hydraulic Presses: Directs hydraulic fluid to extend or retract cylinders.
Pneumatic Systems: Controls airflow for automation in manufacturing.
Industrial Machinery: Regulates movement of actuators in automated systems.

Key Differences Between Proportional Valves and Directional Valves

Feature KaoLu's Proportional Valve Directional Valve Function Adjusts flow or pressure continuously Controls fluid flow direction Control Type Variable (proportional to input signal) Discrete (open/closed or multi-position) Precision High precision in pressure/flow modulation Simple on/off or directional control Applications Laser cutting, blow molding, medical devices Hydraulic systems, industrial automation

Which Valve Should You Choose?

If your application requires precise flow or pressure regulation, a proportional valve is the best choice.
If your system needs to direct fluid movement between different ports, a directional valve is the right solution.

While proportional valves and directional valves both play important roles in fluid control, they serve different purposes.
KaoLu's Proportional valves provide smooth and adjustable pressure or flow control, whereas directional valves manage fluid movement within a system.

For industries such as laser cutting, blow molding, medical, and semiconductor manufacturing, choosing the right valve ensures optimal performance and efficiency.

Looking for high-quality Proportional Valve? Explore KaoLu’s advanced solutions designed for precision fluid control.

Question 8

What is an Electronic Pressure Regulator?

Accepted Answer

What is an Electronic Pressure Regulator?

In today’s highly automated industrial and manufacturing environments, precise pressure control is crucial for efficiency, safety, and performance. One of the key components enabling this precision is the electronic pressure regulator (EPR). But what exactly is an electronic pressure regulator, and how does it work?

This article explores the fundamentals of electronic pressure regulators, their advantages, applications, and how they compare to traditional mechanical regulators.

How Does an Electronic Pressure Regulator Work?

An Electronic Pressure Regulator is a device that uses electrical signals to control and maintain gas or liquid pressure within a system. Unlike traditional mechanical regulators, which rely on springs and diaphragms, Electronic Pressure Regulator use:

Sensors – Measure real-time pressure changes.

Microprocessors – Process input signals and adjust output pressure accordingly.

Proportional valves – Modulate flow to achieve the desired pressure.

When a setpoint is entered (either manually or via a control system), KaoLu's Electronic Pressure Regulator continuously adjusts to maintain consistent pressure, even under fluctuating flow conditions.

Advantages of KaoLu's Electronic Pressure Regulator

Why choose KaoLu's Electronic Pressure Regulator over a mechanical one? Here are some key benefits:

Precision Control – Maintains pressure within tight tolerances, essential for sensitive applications like medical devices or semiconductor manufacturing.
Remote Adjustability – Pressure settings can be changed digitally without manual intervention, improving automation.
Faster Response Time – Reacts instantly to system changes, reducing pressure spikes and drops.
Integration with Control Systems – Can be connected to PLCs, SCADA, or IoT platforms for real-time monitoring and adjustments.
Reduced Maintenance – No springs or diaphragms to wear out, leading to longer service life.

Applications of KaoLu's Electronic Pressure Regulator

KaoLu's Electronic Pressure Regulator can be used in industries where precise pressure control is critical, including:Medical & Pharmaceutical – Ventilators, anesthesia machines, and drug delivery systems.

Semiconductor Manufacturing – Gas flow control in wafer processing.
Medical & Pharmaceutical – Ventilators, anesthesia machines, and drug delivery systems.
Automotive & Aerospace – Fuel injection systems and pneumatic controls.
Food & Beverage – Carbonation control and packaging automation.
Industrial Automation – Robotics, pneumatic actuators, and HVAC systems.

KaoLu's Electronic Pressure Regulator vs. Mechanical Pressure Regulator

Feature KaoLu's Electronic Pressure Regulator Mechanical Pressure Regulator Control Digital, precise Manual, less precise Response Fast, real-time adjustments Slower, spring-dependent Automation Compatible with smart systems Requires manual tuning Maintenance Minimal (no moving parts) Springs/diaphragms wear out Cost Higher initial cost Lower upfront cost While mechanical regulators are simpler and cheaper, electronic regulators offer superior performance in dynamic, high-precision applications.

If your application demands high-precision pressure control, investing in KaoLu's Electronic Pressure Regulator can improve performance, reduce downtime, and enhance system reliability.

Looking for an High Resolution Electronic Pressure Regulator? Contact KaoLu to find the best solution for your needs!

More information please refer to https://www.genndih.com/Proportional-Pressure-Regulator

Question 9

How Proportional Pressure Regulators Improve Laser Cutting Accuracy?

Accepted Answer

In the world of precision manufacturing, laser cutting is a critical process used in industries ranging from aerospace to automotive and electronics. One of the key factors that determine the quality of laser-cut parts is consistent gas pressure control. This is where proportional pressure regulators (PPRs) play a vital role.

But how exactly do proportional pressure regulators enhance laser cutting accuracy?
We explores their function, benefits, and why they outperform traditional pressure control methods in laser applications.

The Role of Gas Pressure in Laser Cutting

Laser cutting relies on a focused laser beam and an assist gas (such as oxygen, nitrogen, or compressed air) to melt, vaporize, or blow away material. The pressure of this assist gas directly impacts:

Cutting Speed – Higher pressure can increase speed but may reduce edge quality.
Edge Quality – Optimal pressure ensures clean, burr-free cuts.
Material Thickness – Different metals require precise pressure adjustments.
Kerf Width – Inconsistent pressure leads to uneven cuts.

Traditional mechanical regulators often struggle to maintain the exact pressure needed for high-precision cutting, leading to variations in quality.

What is a Proportional Pressure Regulator?

A Proportional Pressure Regulator is an advanced electronic device that provides real-time, dynamic pressure control based on input signals (analog or digital).
Unlike fixed mechanical regulators, KaoLu's Proportional Pressure Regulator:

Automatically adjust gas pressure in response to cutting conditions.
Integrate with CNC controllers for seamless operation.
Maintain ultra-precise pressure (±0.1% or better) for consistent results.

How KaoLu's Proportional Pressure Regulator Work in Laser Cutting Systems?

Key Benefits of KaoLu's Proportional Pressure Regulator in Laser Cutting

1. Higher Cutting Precision

Eliminates pressure fluctuations that cause rough edges or incomplete cuts.

Maintains consistent kerf width, crucial for tight-tolerance parts.

2. Faster Process Optimization

Allows on-the-fly pressure adjustments without stopping production.

Ideal for multi-material cutting (e.g., switching between stainless steel and aluminum).

3. Reduced Gas Consumption

Prevents over-pressurization, reducing wasted gas and operational costs.

Some systems use adaptive pressure control to minimize usage.

4. Improved Automation & Repeatability

Fully programmable pressure profiles for different materials and thicknesses.

Stores presets for quick job changes, reducing setup time.

5. Longer Nozzle & Lens Life

Prevents pressure spikes that damage laser optics.

Reduces contamination from erratic gas flow.

KaoLu's Proportional Pressure Regulator vs. Mechanical Regulator in Laser Cutting
Feature KaoLu's Proportional Pressure Regulator Mechanical Regulator Control Digital, precise (±0.1%) Manual, less accurate (±5%) Response Milliseconds Seconds to adjust Automation Fully programmable Requires manual tuning Gas Savings Optimizes flow, reduces waste Often over-pressurizes Edge Quality Consistent, high precision Variable, risk of defects

KaoLu's Proportional Pressure Regulator is a game-changer for laser cutting accuracy, offering real-time pressure control, reduced gas waste, and superior edge quality.
By replacing outdated mechanical regulators with KaoLu's Proportional Pressure Regulator, manufacturers can reach:

Faster production speeds
Lower operational costs
Higher repeatability

Upgrade your laser cutting system with KaoLu's Proportional Pressure Regulator today and experience precision like never before!
More information please refer to https://www.genndih.com/Proportional-Pressure-Regulator !

Question 10

Top 5 Applications for Proportional Air Pressure Control

Accepted Answer

Electronic Proportional Pressure Regulator Applications