Filter Mesh Test Stand

Introduction
Filter mesh test stand is based on relevant standards and specification to test quality control factors: pipe leakage, dust generation, flow test, resistance test, the change of different filters, flow control.
 
Structure
 · Power section
· Aerosol generator section
  The aerosol generator can consecutive produce stable DEHS particles (particle size range 0.3-3μm) .
· Particle counter section
  The sampling flow of the particle counter is 2.83L/min. The particle counter is specially suitable for particle size 0.3μm-10μm.
· Fixture and structure section
    The pipeline is made of 305 stainless steel, anticorrosion and antirust, with consideration  of convenient pipeline replacement ( when testing different size of filters).
· Flow monitoring section: Using V cone flowmeter for flow detection.
· Differential pressure monitoring section:
Using imported DWYER electronic differential pressure transducer for pressure measurement.
· Flow control section
   Electric control valve to automatically regulate the flow
· Data processing:
   Including PLC, software and electric control
 
Standards
 ISO 11155 Road vehicles - Air filters for passenger compartments - Part 2: Test for gaseous filtration
QC/T 795-1:2007 Road vehicles - Air filters for passenger compartments - Part 1: Dust filtration test.
 
Technical Parameters

Item		Parameters
Basic Parameter	Power supply	Three phase AC, 380V±5%   50Hz±2Hz ,5.5kw
	Condensed air	4-8kg/cm2
	Dust source	DEHS
	Anti-electric shock Rate	Grade I
Environment condition	Temperature	15-25 ℃
	Relative humidity	≤75%RH
	Air pressure	68kPa-106kPa
Flow	Test range	150-600m³/h
	Test accuracy	±5%
	Test stability	±3%
Resistance	Test range	0-250pa
	Test accuracy	0-100pa，±5pa；＞100pa ，±5%
Aerosol	Uniformity	≤±15%
	Particle counter calibration	Calibrated in according to JIF 1190-2008 (particle counter calibration specification )
	Repeatability of counting efficiency	Efficiency lower than 40%, ≤±15%; Efficiency higher than 40%, ≤±5%