Cabin Air Filter Test System（Gas Adsorption）

The Filter Test System for gas adsorption/desorption of air filters for passenger compartments (DIN 71460-2, ISO 11155-2). The Adsorption Test Stand for air filters for passenger compartments is used for quantification of adsorption capacity or desorption behaviour of filters.

The design of the Adsorption Test Stand, the test procedure and data acquisition have been based on the draft standard DIN 71460-2 and ISO 11155-2 standard for measuring the dynamic gas adsorption.

The test section and associated ductwork are fabricated from stainless steel. Different sizes of filter media samples and elements can be tested and are mounted in a special adapter. A window in front of the test section allows visual observation of the sample during the test. A pair of mass flow controllers is used for dosing gaseous components from gas cylinders and a new, sophisticated, dosing unit for liquid gas components has been developed specifically for this application. This is based on evaporation of a droplet spray atomized by means of a two-stream nozzle fed from a µl-dosing pump. The gas concentration can be measured downstream of the filter. An exhaust system bypassing the test channel facilitates maintaining a very stable gas dosing.

Test acc. to standards DIN 71460-1 and ISO/TS 11155-1

For filter tests both acc. to standards DIN 71460-1, ISO/TS 11155-1 and E DIN 71460-2, ISO 11155-2

Application

Evaluating gas adsorption and desorption performance of cabin air filter elements

Research and development of new filter media and performance optimization

Quality control and production inspection of cabin air filtration systems

Testing filters of various sizes and types

Simulating laboratory conditions for different gases (e.g., volatile organic compounds, sulfur compounds, ammonia)

Standards

(1) GB/T 32085.2-2015 — Automotive Air Conditioning Filters, Part 2: Gas Filtration Test

(2) DIN 71460-2 — Road Vehicles — Cabin Air Filters, Part 2: Gas Filtration Test

(3) ISO 11155-2:2009 — Road Vehicles — In-Cabin Air Filters, Part 2

(4) ISO 10121-1 / ISO 10121-2 — General Methods for Testing Air Filter Performance

Features

standard compliant testing of filter elements and filter mediaoperator is guided through test routines

modular system and instrumentation

versatile

Technical Data

Accessories

test channel and rig

gas dosing system

exhaust system

flowmeter

gas analyser

sensors

test stand control software

Principle

Integral parts of test procedures

- Differential-Pressure measurement

- Adsortion tests according standard ISO 11155-2 (DIN 71460-2)

- Adsorption/Desorption measurement

- user-defined test procedures

Maintenance Information

Regularly calibrate gas analyzers and flow meters to maintain accuracy.

Inspect seals, adapters, and tubing for leaks before each test.

Clean and maintain the gas dosing and exhaust systems according to manufacturer instructions.

Replace consumables, such as filters and gas lines, as required.

Ensure software and firmware are up to date for accurate data acquisition and analysis.

FAQ

1.What is this product?

It is a laboratory system for measuring gas adsorption and desorption performance of automotive cabin air filters and filter media.

2.What is this product used for?

You use it to evaluate filter gas adsorption capacity, desorption behavior, and pressure drop under standardized laboratory conditions.

3.What is the working principle of this product?

The system supplies controlled test gases upstream of the filter; downstream gas concentrations are measured with analyzers to calculate adsorption and desorption performance. Differential pressure is monitored simultaneously.

4.Why is this product important?

It provides reliable, repeatable performance data essential for R&D, quality control, and compliance with automotive air filter standards.

5.Which industries is this product suitable for?

It is suitable for automotive OEMs, filter manufacturers, research institutions, and third-party testing laboratories.