DIFFERENTIAL LEAK TESTERS MODEL: ASEC-DFLT

ASEC SOLUTIONS  have been pioneering  design and supply of Electronic Differential Air Leak Testers. The Differential Leak Tester is housed in an ABS box with red LED display on the front. We use an imported Differential Pressure Transducer which is the heart of the Leak testing Unit. Besides the Pressure Transducer, the complete design, development and manufacture of Electronics including software are carried out in house.

From simple Leak testing application to complicated Leak cum assembly Testing Units inclusive of pneumatics and fixtures. We use the best of pneumatic and  sealing  components available in the world for integration and control purposes. In addition to testing of components for air leakages, we also manufacture systems to work under vacuum.

Advantages of Electronic Air Leak Testing 
The primary advantage of air leak testing is the speed at which the test can be performed, so automatic air leak testing has become an important requirement in production manufacturing. When deciding whether a part is a candidate for air-leak testing, consider the type of liquid or gas used, as well as the intended operating pressure of this liquid or gas. Components that operate with liquid are particularly good candidates.

In automatic testing, electronic leak testing devices are typically used to determine leak rates. Differential leak testing is the most accurate and reliable leak testing method available. The tester pressurizes the test part and master part automatically and measures differential pressure caused by leakage. The segregation of OK and NOT OK parts is done automatically, independent of the operator. 

Why Leak Testing is required .
In order to check the physical integrity of components it is essential that they are subjected to leak testing  before use in further assembly.  Cast Components  may  have porosity or blow holes and it may not be always possible for conventional inspection procedure to pick up the defects.

Electronic Leak testing offer a non destructive and  operator independent tool  for testing the various parts. It also offers an accurate and highly repeatable  method which is also quantifiable. It has the advantages of storing data in computers and offer scope of SPC analysis.

Principle of Operation
The test specimen and master part is pressurized by first opening an electronically actuated solenoid valve. After the desired pressure is achieved or after a preprogrammed fill time is over, the pressure source is cut off. After allowing  time for stabilization, which is also programmable, the differential pressure drop during a programmable test time is measured by a micro controller based instrumentation. The Pressure drop or the computed leak rate is then compared with preset programmable Permissible leak values and pass or fail lamp is switched on.

Application and Technical Support 
ASEC have over the years, gained valuable and extensive experience in Leak testing Methods of Automotive / Pneumatic / Hydraulic / Medical parts. We will be able to provide you advice on methods, selection of equipment, evaluation, leak rate specifications and on line production testing. 

Applications

We list below some of the components for which Electronic Air Leak testers can be used. Engine Blocks, Engine Valves, Engine Assemblies, Manifolds, Oil Seals, Mechanical Seals,  ‘O’ Rings, Hydraulic Pumps, Water Pumps, clutch and Clutch assemblies, Coolant Systems,  Transmission Gear Boxes,  Steering Gear Boxes, Mufflers, Exhausts Systems, Catalytic Converters, Fuel Filters, Air Filters, Shock Absorbers, Radiators, Power Train Components, Air Conditioner Components, Heat Exchangers, Hose Pipes, Carburetors, Fuel Pumps, Fuel Tanks, Fuel Cocks., Cylinder Heads., Distributor Motors, Actuators, Battery Cases, Multi Function Valves, Non return Valves,  host of other components.

Technical details:-

Range (mbar)   :  200, 500, 1000, 2000, 3000, 5000, 6000, 8000 & 10,000
Filling Pressure Resolution   :  1 mbar
Differential Pressure Resolution :  0.001 mbar / 0.1 Pascal
Pressure Transducer  :  Reliable semiconductor technology. 
Processor :  Micro-Controller Based.
Display :  8 Digit red LED display, seven segment 12.7 mm character height
 Channel :  Single
Number of programs   :  One
Limits Settings  :  Programmable 3 Limit Settings.
Outputs :  Two outputs (Pass & Fail) 
Timers   :  Software Timers – 3 timers from 1 sec to 250 seconds.
Annunciation LEDs :  Coloured LEDs for Test in progress, Pass, Fail and Fault conditions
Operating Temp :  0 to 45 deg C 
Power Supply  :  230 Volts AC, 50 Hz.
 Box :  ABS Box

 

OPTIONS:

Counters :  To count the number of OK and NOT OK parts. 
RS 232 output with software :  Serial output along with software to store the
   test results in Excel format. 
USB storage device :  Facility to store the data in pen drive. 
Multiple programs :  Maximum of 24 programs selectable externally. 
Calibrated Leak Master :  Calibrated leak master with staubli on front panel.
Electronic Pressure Regulator :   Automatic pressure regulation

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