Air Filter Test Stand

Air Filter Test Stand

The air filter performance test bench is a way to measure and detect industrial and domestic air filters.It is an important instrument for performance. Its principle is to measure and detect the presence of air in the filter. efficiency of harmful substances. The air filter performance test bench includes a test chamber and a control device equipment, automatic operation can be obtained through the settings of the control system, and the filter under test can be measured. air flow, quiet noise, temperature and corresponding equivalent clearance rate (MERV).
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Development path of ZWH (Ziwei Test)
1996

Shenyang Ziwei Electromechanical Equipment CO.,Ltd. was established and started business.

1997

The first domestic plastic pipe pressure resistance burst test bench was developed successfully.
The first domestic valve test bench was developed successfully.

1998

Keep innovating.
The first domestic bathroom nozzle pressure flow test system was developed successfully.

2001

Breakthrough field.
The pilot unit of experimental training base of National Building Energy Conservation Testing Center.

Why Choose Us

Professional Team
ZWH pays great attention to the development of employees, the company has developed to the present day, which has emboldened the loyalty, enthusiasm and creativity of all employees, thus forming a team with appeal, cohesion and centripetal force.


One-stop Solution
We can offer a range of services, from consultation and advice to product design and delivery. It is a convenience for the customers, as they can get all the help they need in one place.


Rich Experience
Dedicated to strict quality control and attentive customer service, our experienced staff is always available to discuss your requirements and ensure complete customer satisfaction.


After-Sale Service
Professional and thoughtful after -sales team, let you worry about us after -sales Intimate service, strong after -sales team support.

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Air Filter Performance Test Bench

Air Filter Performance Test Bench is suitable for dry air filter assembly test, air filter element (Requires housing), according to JB/T 9755.5-2013, QC/T 32-2017, ISO 5011-2014.

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Air Filter Leak Test Bench

【Applicable standards】 QC/T970-2014 Passenger car air filter technical specification

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Filter Vibration Testing Machine

【Applicable standards】 ISO 5011:2014 Inlet air cleaning equipment for internal combustion engines and compressors-Performance testing

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Fuel Filter Cleanliness And Pressure Drop Test Bench

Fuel Filter Cleanliness and Pressure Drop Test Bench is used for cleanliness and pressure drop-flow characteristics test of various types of automotive fuel filters, according to ISO 4020-2001.

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Fuel Filter Element High Pressure Drop Resistance Test Bench

Fuel Filter Element High Pressure Drop Resistance Test Bench is used to test the pressure difference when the fuel filter element is structurally damaged, determine the filter element resistance to high pressure drop and the ability of bearing internal pressure of assembly, according to ISO 4020-2001.

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Fuel Filter Hydraulic Pulse Test Bench

 

Fuel Filter Hydraulic Pulse Test Bench produced by SHENYANG ZIWEIHENG TESTING EQUIPMENT CO.,LTD is used to test the fatigue life of the filter under a certain pulse pressure. With computer control, it can sample pressure, temperature, waveform, impulse number in real time.

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Fuel Filter Water Separation Efficiency Test Bench

【Applicable standards】 ISO 4020-2001 Road vehicles-Fuel filters for diesel engines-Test methods ISO 16332-2018 Diesel engines-Fuel filters-Methods for evaluating fuel/water separation efficiency

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Fuel Filter Filtration Efficiency And Life Test Bench

Fuel Filter Filtration Efficiency and Life Test Bench is used to determine the ability of fuel oil filter to filter test impurities under specified test conditions, it represents the relative percentage of test impurities filtered by the filter and the added test impurities;

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Filter Bubble Method

Filter Bubble Method is an indispensable testing equipment for filter material, filter element and filter manufacturer. The principle is that by pressurizing to one side of the sample, the gas overflows from the liquid surface on the other side of the sample, there is a single corresponding relationship between the pressure and the maximum aperture of the sample, the maximum aperture of the...

What is Air Filter Test Stand

 

 

The air filter performance test bench is a way to measure and detect industrial and domestic air filters.It is an important instrument for performance. Its principle is to measure and detect the presence of air in the filter. efficiency of harmful substances. The air filter performance test bench includes a test chamber and a control device equipment, automatic operation can be obtained through the settings of the control system, and the filter under test can be measured. air flow, quiet noise, temperature and corresponding equivalent clearance rate (MERV).

 
Benefits of Air Filter Test Stand
 
01/

Particle Generation System
A system capable of generating a controlled aerosol of specific particle sizes and concentrations to challenge the filter.

02/

Flow Control Capabilities
Precise control over the airflow rate to simulate real-world operating conditions and ensure consistency throughout testing.

03/

Particle Sizing Instrumentation
High-resolution particle counters or sensors to detect and measure particle sizes before and after the filter, allowing for calculation of removal efficiency.

04/

Automatic Sampling
Some models may include automatic sampling ports for collecting samples of the challenge aerosol and the filtered air for further analysis.

05/

Modular Design
A flexible configuration that allows for easy upgrades or changes to accommodate different filter sizes and types.

06/

Temperature and Humidity Control
Environmental chambers or enclosures to maintain constant temperature and humidity levels during testing.

Type of Air Filter Test Stand

 

Pleated Air Filter
Pleated air filters have folds or pleats that increase the filtration surface area. They are contained in a frame or a cartridge that maintains the pleated form of the filter.
They generally have high filtration efficiencies and greatly improve indoor air quality as they can capture microscopic pollutants such as odor, bacteria, pollen grains, molds, and other allergens.

 

Non-Pleated Air Filter
Non-pleated air filters have less filtration area. They are suitable for higher air pressures and volumetric flow rates. They are typically made of woven fiberglass or electrostatic material. They are cheaper than pleated air filters, however, they have a shorter service life and require more frequent replacement or cleaning. They are only effective in capturing large particles (e.g., dust, debris, insects); hence, non-pleated air filters are not suitable for users with respiratory illnesses or allergies.

 

Paper Air Filter
Paper is the most inexpensive but least durable filter media material. Paper air filters allow the separation of small particles by allowing air to pass through its fine pores. They are usually constructed by compacting woven wood pulp fibers together, then they are pleated to augment their mechanical strength and filtration efficiency. They are commonly used in automobile air cleaners, furnace filters, and indoor air purifiers.

 

Carbon Air Filter
Carbon air filters remove toxic gases (e.g., VOCs, sulfur dioxide, benzene), allergens, fumes, and odors (i.e., from smoking, painting) present in air by adsorbing them into the surface of the activated carbon's molecules. Carbon air filters are commonly used in air purifiers, range hoods (in conjunction with aluminum screens), bathroom fans, and microwaves.


Aluminum Air Filter
Aluminum air filters are made of multiple alternating layers of aluminum screens to maximize their filtering and particle retention capabilities. These filters are supported in a rigid carrier frame. They are used as a pre-filter in multi-stage air filtration systems to keep the large particles from reaching the main filter. They also can capture coolant mists and grease.
Aluminum air filters have high strength and durability and can be washed or cleaned and reused several times. They perform well in a variety of environments due to their corrosion and thermal resistance. Their applications include HVAC units, range hoods, automobiles, and more.


Fiberglass Air Filter
Fiberglass air filters provide better airflow in HVAC units and are suitable for capturing only large particles. Microscopic particles can still pass through the fiberglass filter medium. Hence, their filtration capabilities are suboptimal, and they are not recommended for spaces where occupants have respiratory problems and allergies, though the air quality is still safe for healthy individuals. They are much cheaper than pleated air filters but are replaced more frequently. Fiberglass air filters also require frequent maintenance since they are prone to clogging.

 

Plastic Air Filter
Plastic air filters inherently have high strength, durability, and chemical resistance. They are commonly made from woven HDPE, UHMW-PE, polypropylene, polyester, and PTFE fibers. Some plastic filters have electrostatic properties.

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Air Filter Test Stand working principle

Install the filter and test chamber on the outer cover, put air containing pollutants (harmful gases) into the test chamber through a predetermined pressure range, and then these harmful gases will pass through the filter like air flow. And rely on the air filter performance test bench to detect the concentration of pollutants returned to the test box to calculate the filter resistance.

The Air Filter Test Stand production process is as follows
 

Mechanical Processing Of Aluminum Profiles And Iron Wires
Use aluminum cutting machines, manual cutting machines, etc. to cut aluminum profiles and iron wires Iron wire straightening machines, manual bending machines, manual punches, etc. bend and straighten aluminum profiles and iron wires, and then use a butt welding machine to weld and shape the aluminum profiles and iron wires to make the inner frame and outer frame.

 

Filter Material Cutting, Folding, Welding And Sewing
Use a manual cutting machine to cut the filter material into the appropriate size; then enter the medium-efficiency filter material folding machine, high-efficiency filter paper folding machine, non-partition filter paper folding machine and full servo folding machine.
Fold the filter paper into a wavy shape; then weld the multiple layers of filter paper together. Since the filter paper is made of plastic, it can be welded with ultrasonic waves; finally, use a sewing machine and pneumatic.The bag sewing machine sews the filter paper into shape.

 

Assemble And Install Built-in Accessories
Install the processed filter paper in the formed inner frame, use an aluminum foil corrugator to roll out ripples on the aluminum foil, and then assemble it with the filter paper.Install in the inner frame to increase the filter support strength, and then install other built-in accessories.

 

Lue-filled Fixed Filter Material
For high-efficiency filters, M-313 sealant needs to be filled in the joints of the filter frame and the contact points between the filter paper and the frame to enhance the filter's performance.To improve the sealing performance of the filter, first prepare the M-313 sealant in a mixer, then apply the prepared sealant to the filter manually, and then place it in the workshop.

 

Outer Frame Fixation
Use manual installation to install and fix the filter outer frame.

 

High Temperature Test
For high-efficiency filters, after production and molding, some products are randomly inspected and put into high-temperature testing furnaces and high-temperature curing furnaces for testing. The high-temperature resistance of the glue has been tested.

Several principles for choosing Air Filter Test Stand Test Stand

Each size of engine has a certain air intake volume. The air intake volume of the Air Filter Test Stand must be greater than the required air intake volume of the engine, and the bigger the better, but it must be consider the space of the layout.

 

Equipment type and working environment. The selected Air Filter Test Stand cannot simply consider the engine's air intake requirements, but also requires further analysis and calculation of the dust content.

 

Select the Air Filter Test Stand series. The appropriateness of the Air Filter Test Stand should be selected based on the engine air intake volume and the working environment of the equipment.

 

Select the specific model of Air Filter Test Stand. It should be based on the air intake required by the engine and the original air intake resistance requirements, and on the premise of meeting the rated air intake requirements.


Consider the specific installation location, connection method, etc.


Air Filter Test Stand is a commonly used filter with high filtration efficiency, easy installation and maintenance, and has been recognized by many users.

How to Maintain Air Filter Test Stand

 

 

During transportation and movement, the filter element should be handled with care and free from violent collisions and vibrations.

 

Special attention should also be paid to the installation of the Air Filter Test Stand. The installation direction cannot be wrong. The connection between the filter and the frame cannot leak, deform, be damaged, or have adhesive leakage. After the filter is installed, the inner wall must be cleaned.

 

Observe the filter carefully and wipe the filter with a white silk cloth to check for water leaks.

 

Before installing the Air Filter Test Stand, clean the room where the equipment is located and the equipment installation site to ensure that the indoor environment does not affect the Air Filter Test Stand.

 

When removing the filter packaging, it must be done on site. Check whether the packaging is damaged before disassembly, check the filter after disassembly, and check whether the appearance is damaged.

 

Measure whether the side diagonal of the filter meets the requirements, whether the outer frame is rusty, whether the product certificate and technical parameters are correct, etc.

 

When installing the filter, the direction of the arrow must be consistent with the direction of air flow. When installed vertically, the folds of the filter paper must be perpendicular to the ground.

 
Our Factory

 

Development path of ZWH (Ziwei Test)
1996: Shenyang Ziwei Electromechanical Equipment CO.,Ltd. was established and started business.
1997: The first domestic plastic pipe pressure resistance burst test bench was developed successfully.
The first domestic valve test bench was developed successfully.
1998: Keep innovating.
The first domestic bathroom nozzle pressure flow test system was developed successfully.
2001: Breakthrough field.
The pilot unit of experimental training base of National Building Energy Conservation Testing Center.

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FAQ
 

Q: What is the purpose of an Air Filter Test Stand?

A: An Air Filter Test Stand is used to assess the effectiveness of air filters in trapping particulate matter from an airstream. It ensures that filters meet performance standards and regulatory requirements before being deployed in various applications, including automotive, industrial, and HVAC systems.

Q: How does an Air Filter Test Stand work?

A: The test stand generates a controlled aerosol of particles, which is passed through the filter under test. Sensors measure particle size and concentration before and after the filter. Flow rates are carefully regulated to mimic actual use conditions. Data on particle capture efficiency and pressure drop is collected and analyzed to determine the filter's performance.

Q: What types of particles can be tested with an Air Filter Test Stand?

A: Test stands are typically capable of handling a range of particle sizes, from submicron to coarse particles. The specific type of particles (e.g., dust, pollen, bacteria, etc.) used in the tests depends on the application for which the filter is intended.

Q: Can the Air Filter Test Stand be used for different sizes and types of filters?

A: Most test stands are designed with flexibility in mind, accommodating various filter sizes and types, including pleated, panel, HEPA, and activated carbon filters. Some models may require adjustments or modifications for larger or non-standard filters.

Q: How is the efficiency of an air filter determined?

A: Efficiency is calculated based on the number and size of particles captured by the filter. This is done by comparing the particle concentration before and after the filter using particle counters. The percentage of particles removed from the airstream is the filter's efficiency rating.

Q: What is the significance of differential pressure measurement during filter testing?

A: Differential pressure measures the resistance to airflow caused by the accumulation of particles on the filter media. Monitoring this pressure helps to determine the filter's lifespan and when it should be replaced, ensuring optimal performance and energy efficiency.

Q: Are there any safety features on an Air Filter Test Stand?

A: Yes, safety features are integral to test stand design. These may include emergency stop buttons, protective enclosures, and alarms that alert operators to any abnormal readings or conditions. Proper ventilation systems are also important to prevent the accumulation of hazardous particles.

Q: How is the Air Filter Test Stand calibrated?

A: Regular calibration of the test stand's sensors and flow control system ensures accurate and repeatable results. Calibration procedures usually involve comparing the test stand's measurements to known standards or reference materials. The frequency of calibration depends on the test stand's usage and the required level of precision.

Q: Can the test stand be operated remotely?

A: Some advanced Air Filter Test Stands offer remote access capabilities via network connections. This allows operators to monitor and control the test process from a different location, which can be particularly useful for unattended testing or when multiple test stands are in use.

Q: What maintenance is required for an Air Filter Test Stand?

A: Regular maintenance is essential to ensure the test stand's accuracy and longevity. This includes cleaning or replacing particle sensors, checking and maintaining seals and gaskets, calibrating instruments, and inspecting mechanical components for wear and tear. Proper maintenance procedures are usually outlined in the test stand's user manual.

Q: How are air filters tested?

A: The pollutant (dust, smoke or VOC) is introduced in a controlled way into the test chamber and mixed into the air, then the testers measure how fast it naturally precipitates or decays from the air. The chamber is then cleared and the test repeated, this time with the air purifier running.

Q: What is a filter tester?

A: All filter test equipment from TSI, used for testing efficiencies of filter media and a variety of air filters, including high and very high-efficiency filters, respiratory filters, cartridges, and protective garments, is known for its simple and reliable operation.

Q: How often should air filters be changed?

A: How Often Do I Need to Change Out My Air Filter? Generally, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days, or 3 months. That can change based on where your home is located (ex. dusty, dry climates), if you have any pets, and the age of your system and equipment.

Q: How many years does air filter last?

A: It's recommended that you replace your car's air filter every 12,000 to 15,000 miles or once a year, whichever comes first. However, if you drive in dusty conditions or on dirt roads frequently, it's best to check more often as this will increase the amount of debris entering into the engine.

Q: How do I know if my filter is good?

A: The most effective way to determine if your water filter is working properly is to test your water before and after it passes through your filter. Such analysis is called performance testing because it tests the effectiveness of your filter in reducing or removing potentially harmful contaminants that pass through.

Q: Why do we inspect air filters?

A: Without regular inspection, people aren't able to recognize issues with their filters and this drastically affects the work of their furnace. On the other hand, an air filter not properly maintained is a major health hazard, as it might lead to leaks of carbon monoxide, increased harmful particles, dust, and so on.

Q: Can I clean my air filter instead of replacing it?

A: Yes, some kinds of filters are washable! That means that instead of getting rid of your air filter when its three months are up, you can wash the dust and debris off and place the filter back into your HVAC system. Not all filters are reusable, so make sure you have a washable filter before running it underwater.

Q: What happens if air filter is not changed?

A: Air filters that are overdue for a change are a common cause of HVAC system failure. Over time, dirt builds up in the heating and AC filters, causing components such as the motor to go into overdrive, which may eventually overheat your unit.

Q: What happens when air filter is not changed?

A: A dirty filter reduces the airflow to your HVAC system and causes it to work harder. It uses more energy, which costs you more money. It also might not be able to keep your home at the proper temperature. This means it may have to run for longer periods, which strains the system.

Q: Do filters expire?

A: In short, no, unused water filters do not expire. There is no set shelf life for water filters, as long as they're not exposed to any moisture. That's the key - moisture is what makes water filters work, and without that, they're sitting pretty and ready for use at any time.

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