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| − | == Mouthpiece meltblown cloth filtration performance tester ==
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| − | The G506 mask filtration performance tester clean compressed air sprays the pre-formulated NaCl solution or similar solutions such as DEHS/PAO from the aerosol generator, through a classifier (inertia principle), the unwanted large particles are collected in a collection bottle, and the aerosol particles that meet the requirements are ejected from the nozzle of the aerosol generator into the test system.
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| − | Application range.
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| − | G506 mask filtration performance tester is used for performance testing of cartridges, disposable masks and filter media for respiratory protection products. It is suitable for safety testing of such products, basic filtration performance evaluation and guidance of new product development.
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| − | The instrument is also suitable for performance verification of new products in R&D, quality control in production departments, third party testing organizations, product performance verification laboratories, quality and technical supervision departments, etc. for the determination of material performance.
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| − | G506 Comprehensive automatic filtration performance tester.
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| − | 1、Aerosol from the aerosol generator needs to go through two processes before it reaches the test media; 1. by mixing with the heated gas (for salt spray) to produce aerosol salt particles. 2. through the electrostatic neutralizer to neutralize the static electricity carried by the aerosol, the role of this move is to reduce particle loss and the impact of static electricity on the test results.
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| − | 2. After the aerosol is processed by the above two procedures, it reaches the surface of the test media at a certain flow rate (flow rate) and starts the test procedure. For the loading test, the test is relatively long. The aerosol concentration or mass concentration upstream and downstream of the filter media is measured by a particle counter or laser scattering photometer, and the filtration efficiency is calculated, while the pressure drop on both sides of the filter media is monitored by a differential pressure sensor.
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| − | Testing principle.
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| − | Oil mist method.
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| − | Dry oil-free compressed air enters the aerosol generator at a certain flow rate to produce aerosols with a certain particle distribution, which are sieved by the cascade impactor, and the particles with particle size distribution meeting the standard requirements are discharged from the aerosol outlet and enter the test pipeline.
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| − | And reach the filter media, the filter media is installed on both sides of the differential pressure sensor, the test process of the filter media upstream and downstream particles to monitor the number of particles; the whole test process with a certain flow rate or air volume.
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| − | Salt spray method.
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| − | Dry oil-free compressed air enters the aerosol generator at a certain flow rate to produce aerosols with a certain particle distribution, which are sieved by a cascade impactor to discharge the particles with particle size distribution meeting the standard requirements from the aerosol outlet and enter the test pipeline.
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| − | As the salt spray aerosol generation with electrostatic, so the need for salt spray aerosol neutralization treatment. And for the salt spray aerosol, it needs to be heated to produce salt particles. The method is: the aerosol that meets the particle size requirement is mixed with the heating gas and then the water in the aerosol is evaporated to produce salt particles.
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| − | And reach the filter media, the filter media is installed on both sides of the differential pressure sensor, the test process of the filter media upstream and downstream particles to monitor the number of particles; the whole test process with a certain flow rate or air volume.
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| − | Compliant with standards.
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| − | NIOSH 42 CFR Part 84 respiratory protection devices
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| − | EN 143 Respiratory protection. Particulate filters. Requirements, inspection and
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| − | Marking JMOL Japanese Standard for Protective Masks
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| − | GB 19083 Technical requirements for medical protective masks
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| − | GB2626 Self-priming filtered particulate respirator
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| − | GB 32610 Technical specification for daily protective masks
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| − | GB19082 Medical disposable protective clothing
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| − | YY0469 Medical surgical masks
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| − | YY0969 Single-use medical mask
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| − | Several characteristics advantages.
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| − | 1、Intelligent touch screen control + test report printing
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| − | PLC control system, more efficient and reliable, programmable 7-inch color LCD touch screen, to achieve control, monitoring, calculation, data display and other functions.
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| − | 2, a variety of test fixtures
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| − | Instrument has a variety of test fixtures, can test different types of masks.
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| − | 3、High degree of automation
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| − | The equipment is designed as a dual-control pneumatic clamping method, easy to operate and high safety.
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| − | 4、Built-in powerful function
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| − | Equipment can test the penetration efficiency, penetration resistance and flow rate at the same time the flow pressure difference of the equipment can be set arbitrarily to meet a variety of experiments, stable performance, good repeatability of test data.
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| − | Technical parameters.
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| − | Control mode: automatic
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| − | Sample flow rate: 10-100L / min
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| − | sample clamping: pneumatic clamping
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| − | Particle counter: 0.3-1.0μm/0.1-0.5μm/0.1-1.0μm
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| − | /1.0-10.0μm/10.0-100μm
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| − | Test solution: DEHS, PAO, Paraffin Oil, Dust or others
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| − | Differential pressure: 2000Pa±1%FS
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| − | Test period: 30s or other
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| − | Filter media cross-section: various / according to the use requirements
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| − | Sensor: Temperature sensor, relative humidity sensor, atmospheric pressure sensor
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| − | Weight:155kg
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| − | Power supply:220V 50Hz
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| − | Appearance size(LxWxH):900mm×850mm×1650mm
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| − | == Mask breathing resistance tester ==
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| − | Mask breathing resistance tester
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| − | Product Description.
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| − | Respiratory resistance tester is used to determine the inspiratory resistance and expiratory resistance of respirator and mask-type protective equipment under the specified conditions. Applicable to the national labor protective equipment inspection agencies, mask manufacturers of ordinary masks, dust masks, medical masks, anti-haze mask products for the relevant testing and inspection.
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| − | Conforms to the standards of
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| − | GB 2626-2006 Respiratory protective equipment Self-priming filtered anti-particulate respirator 6.56.6
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| − | GB/T 32610-2016 Daily protective masks technical specifications
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| − | Instrument characteristics:
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| − | 1、The instrument consists of breathing air source that can be adjusted for flow rate, the standard prescribed human head model, inhalation and exhalation piping system, respiratory resistance measurement system, etc.
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| − | 2、Adopt special air conversion components, to ensure that the exhalation and inhalation of two sets of piping system replacement is convenient and fast.
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| − | 3、Digital display of respiratory resistance, with zero point correction, accuracy correction and over-range alarm function.
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| − | 4、Adopt electronic flow meter, high precision flow control.
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| − | Equipment principle:
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| − | The device is mainly composed of test head mold and breathing pipe, pressure measuring tube, differential pressure sensor, flow meter, regulating valve, three-way valve, vacuum pump and air compressor, etc.
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| − | Technical indicators.
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| − | 1, the apparatus consists of the air source that can adjust the flow, the standard prescribed human head model, two sets of piping system for inhalation and exhalation, respiratory resistance measurement system, etc.
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| − | 2、The flow sensor is highly sensitive and has a very small initial flow.
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| − | 3, flow sensor chip using thermal mass flow meter, no temperature pressure compensation, to ensure the high accuracy of the sensor measurement. The flow meter range is 0 L/min ~ 100L/min, the accuracy is ± 2%.
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| − | 4、Multiple sensors are integrated on a single flow sensor chip, which makes the range ratio of the sensor greatly improved.
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| − | 5、The flow sensor has high stability of zero point, high stability of full range, high accuracy of full range and excellent repeatability, low power consumption, low pressure loss and fast response speed.
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| − | 6、The data logger adopts 128×64 resolution graphic dot matrix LCD, full Chinese interface, easy to operate.
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| − | 7、The data logger has 4M memory for measurement value recording.
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| − | 8, the micro piezometer sensor using two-wire system, high precision, good stability; explosion-proof design for safe and reliable use.
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| − | 9, micro piezometer sensor range, zero point external continuously adjustable, damping adjustable, no mechanical moving parts, less maintenance workload. Micropiezometer range of -1000Pa ~ 1000Pa, the accuracy of 1Pa.
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| − | 10、The whole instrument adopts special gas circuit conversion components to ensure that the exhalation and inhalation of the two sets of piping system conversion is convenient and fast.
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| − | 11、The pumping volume is not less than 100L/min
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| − | 12, the ventilation volume is constant (85±1) L/min
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| − | 13、Power supply: AC220V, 50Hz
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| − | 14、Applicable to the latest national standard requirements, compatible with the labor protection mask and daily protective mask standards
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| − | == Mask airflow resistance tester ==
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| − | Main use.
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| − | Textile airflow resistance tester, also known as fabric air resistance tester, is mainly used to determine the air penetration resistance of textiles and wadding, space cotton, etc. It is one of the important means to identify the comfort and hygiene of clothing and textiles, especially medical textiles. It can be widely used in polymer material production enterprises, printing and dyeing industrial enterprises, textile inspection departments, scientific research units, textile colleges and universities, etc.
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| − | Applicable standards.
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| − | GB 19083-2010 technical requirements for medical protective masks
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| − | Instrument characteristics.
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| − | 1, the instrument consists of adjustable flow of air source, specimen clamping device, air pressure measurement system.
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| − | 2, digital display of airflow resistance, with zero point correction, calibration function.
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| − | 3, easy to operate.
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| − | Technical parameters.
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| − | 1, air flow adjustment range: 10L/min-100 L/min (600L/h-6000 L/h)
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| − | 2, airflow resistance measurement range: 0-1kPa
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| − | 3, test time: 1 second ~ 99 hours optional
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| − | 4、Power supply: AC220V, 50Hz
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| − | 5, the machine power: 1.2KW
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| − | Precautions.
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| − | 1、During the test, if the air compressor starts frequently, it means that the gas loss is large, which is normal.
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| − | 2, if the test begins, observe the airflow resistance display table appears "ERROR" words, indicating that the sample gas resistance has exceeded the set value of 500Pa, you must immediately press the "test end" button to protect the instrument.
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| − | 3, airflow resistance display table all parameters have been set, non-professional maintenance personnel shall not modify.
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| − | 4, the flowmeter must be used in the flow range, strictly prohibit the use of over-range.
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| − | 5, if found that the flowmeter rotor on the dust impurities too much, affecting the accuracy of the reading, then open the instrument back cover, open the manual ball valve inside the box, and then pass on the gas source, the flowmeter cleaning. (The usual state of use, the ball valve inside the box must be in the closed state.)
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| − | 6, the instrument manual does not appear in the adjustment valve, the test process should not be adjusted without authorization.
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