Performance tester for particle filtration efficiency (PFE) of respirator
1. The aerosol from the aerosol generator needs to be treated twice before reaching the test filter material; 1. By mixing with the heated gas (for salt

In terms of fog) produce aerosol salt particles. 2. Neutralize the static electricity carried by the aerosol through the electrostatic neutralizer, which is to reduce particle loss and static

The effect of electricity on test results.

2. After the above two procedures, the aerosol reaches the surface of the test filter material at a certain flow rate (flow rate), and the test procedure is started to measure the filtration efficiency
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In terms of test, the test time is very short, only a few seconds to complete the test of a piece of filter material. For loading test, the experiment is relatively long,

Through particle counter or laser scattering photometer, the quantity concentration or mass concentration of the aerosol upstream and downstream of the filter material are measured, and the filtration efficiency is calculated

The pressure drop on both sides of the filter material is monitored by the differential pressure sensor.

Compliance with standards:

Niosh42cfrpart84 respiratory protective device

En134 respiratory protective devices - particulate filters - requirements, testing and marking

JMOL Japanese standard for protective masks

Gb19083 technical requirements for medical protective masks

Gb2626 self priming filter type anti particle respirator

Main features of gb32610 technical specifications for daily protective masks:

Intelligent touch screen control + test report printing:

PLC control system, more efficient and reliable, programmable 7-inch color LCD touch screen, real

Various functions such as control, monitoring, calculation, data display, etc

Various test fixtures:

The instrument has a variety of test fixtures, which can test different types of masks.

High degree of automation:

The equipment is designed with double control pneumatic clamping mode, which is convenient for operation and high safety.

Built in features:

The equipment can test the penetration efficiency, penetration resistance and flow rate, and the flow differential pressure of the equipment can

With arbitrary settings, it can meet a variety of experiments, with stable performance and good repeatability of test data.

application area

The filter performance tester of respirator is used for the performance test of filter element, disposable respirator and filter medium of respiratory protection products. It is applicable to

Safety test, basic filtration performance evaluation and new product development guidance.

 after-sale service:
Shanghai Jianhu instrument and Equipment Co., Ltd. makes the following commitments and strictly abides by the after-sales service plan, including service content, form, time, response time to solve quality or operation problems, time to solve problems, quality assurance measures, etc
1. From the date of sale, our company guarantees all kinds of environmental testing machines for 12 months. The actual warranty period shall be subject to the contract. The warranty period of some instruments can be free of charge for 36 months.
2. Customers can choose to extend the warranty service beyond the warranty period of equipment standard, and increase a certain amount of extended premium can make the instrument long enjoy 5 years of free warranty. Remove 100% of after-sales worries.
3. During the warranty period, in case of equipment quality problems, our company is responsible for free maintenance and replacement of parts, without any cost to the customer, except for the damage caused by human factors and force majeure.
4. The service phone immediately responded, and Jiangsu, Zhejiang and Shanghai regions returned the solution within two hours, and the solution within 12 hours. Other remote areas in the field will report the solution within two hours and reply the solution within 48 hours.
5. The after-sales customer service department shall regularly sample the telephone return visits of regular customers to understand the use of customers and the operation of the machine.
6. If customers need, they can make an appointment with the technical engineer of Jianhu to provide on-site services (including machine maintenance, technical explanation, on-site guidance, etc.) from time to time every six months.
7. Our company's technical consultant answers the customer's questions about technology and standards and provides technical guidance at any time, and explains and analyzes the test methods of the equipment.
9. After the warranty period, the whole machine will be guaranteed for life, and the equipment will be provided with paid service. The maintenance cost is low, and the maintenance will be free after maintenance.
10. In order to solve the after-sales problems of the products more conveniently and quickly, our company has offices and maintenance points in Beijing, Tianjin, Northeast China, Dongguan, Wuhan, Shanghai, Xi'an, Nanjing, etc