Automotive industry inspection leak testing waterproof testing plan

An instrument for checking the airtightness of seals without air inlet holes, which is very suitable for waterproof inspection, such as components and finished products that require IP standards and waterproof protection levels. From relatively small electronic components such as relays, valves, crystal emitters, image sensors, headphones, batteries, etc. to large workpieces such as mobile phones, communication equipment, rectifiers, etc. It can detect leaks from large to small, even small workpieces can be inspected.

Products with waterproof function do not have pressure ports due to their sealed structure. So it is necessary to place the workpiece into a sealed chamber and then apply pressure to the chamber.

If a leak occurs, the pressure inside the chamber will decreaseLow to detect leaks. However, if there is a large leak in the workpiece, the pressure will be the same as the applied pressure

It will fill the interior of the workpiece and cannot be measured correctly

In seal leakage testing, measuring large leaks is a key point. Need to be able to measure both large and small leaks. Small leakage refers to sealing the workpiece in a closed environment

Measure the pressure relief inside the sealed chamberMinor pressure drop caused by leakage into the workpiece. Large leakage measurement is the process of dividing the air pressure inside a sealed chamber to expand

Measure the differential pressure generated in the volumetric tank

Test product	Reference leakage standard (Unit:ml/min）	Recommended Products
		equipment	tester
EGRvalve	Test pressure:80kpa Allowable leakage amount:3ml/ min		LC1000
Windshield cleaning system	Test pressure:60kpa Allowable leakage amount:4ml/ min		LC1000
ECUhousing	Test pressure:50kpa Allowable leakage amount:2ml/ min		LC1000
oil pan	Test pressure:200kpa Allowable leakage amount:2ml/ min		LC1000
Cylinder head (oil passage, water passage)	Test pressure:800kpa		LC1000
car headlight	Test pressure:10~30kpa		LC1000
Fuel rail	Test pressure:100-300pcs Allowable leakage amount: less than2.0 ml/min		LC1000
fuel pump	Test pressure:60-90pcs Allowable leakage amount: less than4.0 ml/min		LC1000
Throttle plate	Test pressure:-60kpa Allowable leakage amount: less than60 ml/min		LC2000
throttle body	Test pressure:400kpa Allowable leakage amount: less than3.0 ml/min		LC1000
relay	Test pressure:-50kpa Allowable leakage amount: less than1.0 ml/min	Need tooling	SLC1000