PFE manufacturer of particle filter efficiency tester

PFE manufacturer of particle filter efficiency tester

 The clean compressed air of the respirator filter performance tester ejects the prepared NaCl solution or dehs / Pao and other similar solutions from the aerosol generator. After passing a classifier (inertia principle), the unwanted large particles are collected into the collection bottle, and the qualified aerosol particles are ejected from the nozzle of the aerosol generator into the test system. 

workingprinciple:  
1.Theaerosolfromtheaerosolgeneratorneedstwoprocessesbeforereachingthetestfiltermaterial:  
a.Aerosolsaltparticlesareproducedbymixingwithheatedgas(forsaltspray).  
b.Thestaticelectricitycarriedbytheaerosolisneutralizedbyanelectrostaticneutralizer,whichcanreducetheparticlelossandtheinfluenceofstaticelectricityonthetestresults.  
2.Aftertheabovetwoprocedures,theaerosolreachesthesurfaceofthetestfiltermaterialatacertainflowrate(flow)andstartsthetestprocedure.Forthetestoffilterefficiency,thetesttimeisveryshort,anditonlytakesafewsecondstocompletethetestofapieceoffiltermaterial.Fortheloadingexperiment,thenumberconcentrationormassconcentrationofaerosolsweremeasuredbyparticlecounterorlaserscatteringphotometer,andthefiltrationefficiencywascalculated.Atthesametime,thepressuredroponbothsidesofthefiltermaterialwasmonitoredbydifferentialpressuresensor.  
Compliancewithstandards  
Niosh42cfrpart84respiratoryprotectivedevice  
En134respiratoryprotectors-particulatefilters-requirements,inspectionandmarkingJMOLJapanesestandardforrespirators  
Gb19083technicalrequirementsformedicalprotectivemasks  
Gb2626selfprimingfiltertypeantiparticlerespirator  
Gb32610technicalspecificationfordailyprotectivemasks  
Fieldapplication:  
Thefilterperformancetesterofrespiratorisusedfortheperformancetestoffilterelement,disposablerespirator,filtermedium,etc.ofrespiratoryprotectionproducts.Itissuitableforthesafetytestofsuchproducts,basicfilterperformanceevaluationanddevelopmentguidanceofnewproducts.  
TheinstrumentisalsosuitablefortheperformanceverificationofR&Dnewproducts,qualitycontrolofproductiondepartments,third-partytestinginstitutions,productperformanceverificationlaboratories,qualityandtechnicalsupervisiondepartments,etc.  
technicalparameter  
Controlmode:automatic  
Sampleflowrate:10-100l/min  
Testcycle:30sorother  
Filtermaterialsection:various/accordingtotheuserequirements  
Sampleclamping:pneumaticclampingparticlecounter:0.3-1.0μM/0.1-0.5μM/0.1-1.0μM  
Sensor:temperaturesensor,relativehumiditysensor,atmosphericpressuresensor  
Weight:155kg  
Powersupply:220V50Hz  
Appearancedimension(LxWxH):900mm×850mm×1650mm  
Pressuredifference:2000Pa±1%FS  

 

 

 

 

 

 

 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