Helium Leak Tester Helium Leak Test System

Yamaha Fine Tech's proprietary low vacuum test realizes highly reliable measurement.
With our proprietary low vacuum chamber system and helium gas detector, highly reliable inspections are conducted.
Easy operation and easy maintenance are realized by a full fail-safe and sophisticated control system.

Features of Helium Leak Tester

Tiny leaks detected accurately

Yamaha's proprietary low vacuum chamber system judges tiny leaks with an accuracy 100 to 1000 times as high as the accuracy of a submerged type or differential pressure air leak detection method.

Construction of a system directly connected to your production line possible

It is possible to construct a system directly connected to your production line and a robot-based transfer system when it is combined with Yamaha's factory automation technology. Productivity can be increased by manpower saving or unmanned operation.

Operational errors are reduced with a fail-safe system

A system is designed with safety in mind so as to reduce the operator load and prevent mistakes, such as adopting automatic sorting of conforming/non-conforming items, marking, processing check, and interlocking.

Easy operation and easy maintenance

A sophisticated control system is adopted to make operation and maintenance easy. In case of an operational error or problem, messages in Japanese help you navigate and find a quick and appropriate recovery method.

Comprehensive support provided from design to assembly and adjustment

Comprehensive systems can be offered to customers by carrying out design and manufacturing all in-house, from an inspection workpiece handling machine up to control design and assembly & adjustment.

One of the best track records in Japan

For Yamaha's leak testers, more than 500 systems have been supplied to a wide range of industries, having the top share in each of the fuel tank, aluminum wheel, and drum inspections in Japan.

Examples / Option

We provide special systems tailored for the customers' production lines, such as systems supporting high pressures over 1 MPa and systems supporting full automation. Our personnel with rich experience provide full support, from design to manufacturing, adjustment, and installation. In our test room, demonstration equipment for drums, for fuel tanks, and for 15 MPa high pressure support are available. Feel free to ask for a trial test as needed. As an option, a helium recycling unit is also available.
* For a test pressure of 1 MPa or more, an application to the relevant prefecture is required. Since application forms are also available, feel free to consult with us in the above case.

Case 1: Rotary indexing table type

An all-in-one automatic inspection system that carries out operations from vacuuming to helium charging, inspection, and helium recycling with one unit. Overwhelming cycle time is realized.
[ Image ] Rotary indexing table type
Application Car compressor
Size W5400 mm x D3000 mm
Detection method Vacuum chamber method
Cycle time 24 seconds/workpiece
Helium charging pressure 2.0MPa(G)
Helium concentration 100%

Case 2: Pallet feed type

An automatic inspection system that carries out operations from vacuuming to helium charging, inspection, and helium recycling, each on a unit basis. This system is easy to be combined into an existing production line, which makes process management easy.
[ Image ] Pallet feed type
Application Car compressor
Size W8200 x D3700 mm
Detection method Vacuum chamber method
Cycle time 18 seconds/unit
Helium charging pressure 1.7MPa(G)
Helium concentration 80%

Option: Helium recycling unit

A recycling unit that reduces helium gas running costs, supply risk, and price increase risk. We will propose this unit according to the workpiece or charging pressure.
[ Image ] Helium recycling unit
Application Lithium-ion battery case
Size W800 x D800mm
Processing capacity 15NL/min
Maximum discharging pressure 0.7MPa(G)
Helium recycling efficiency 90% or more

Chamber method and sniffer method

Chamber method with high performance and high reliability, and sniffer method that is low-cost and space-saving

As a high-performance and high-reliability leak tester, the Yamaha Helium Leak Tester is adopted by many automobile parts and home electric appliance factories for testing such products as aluminum wheels, drums, air conditioners, and fuel tanks. According to the usage, inspection is also possible with such a system as a system employing the sniffer method.

Vacuum chamber method

Mechanism [ Image ] Vacuum chamber method
 
  • Actual leakage rate of 10-8 [Pa・m3/s]
Features
  • Overall leak judgment can be ensured.
  • Leak measurement is quick.
  • No human errors are expected.
  • Automation can be realized easily.
  • There is no need for helium contamination prevention measures.
Recommended applications
  • Automobile aluminum wheel
  • Drum
  • Air conditioner
  • Fuel tanks, and others

Sniffer method

Mechanism [ Image ] Sniffer method
 
  • Actual leakage rate of 10-6 [Pa・m3/s]
Features
  • A leak location can be identified directly.
  • The unit configuration is simple.
  • The cost of equipment is low.

Chamber method mechanism

[ Image ] Chamber method mechanism

Chamber method whereby tiny leaks are detected accurately

Tiny leaks are judged with an accuracy 100 to 1000 times as high as the accuracy of a submerged type or differential pressure air leak detection method to conduct highly reliable inspection. In addition, compared to the sniffer method, which takes time to detect leaks due to probe operation, overall inspection of product can be conducted speedily.

Reasons why helium (He) is used as tracer gas

  1. Helium is safe because it is not toxic or harmful and does not exert a bad influence on the human body and the environment.
  2. Helium is safe because it is non-combustible.
  3. A helium molecule has a small diameter and a small mass as well. It is easy to leak through even tiny holes.
  4. Usually, helium is present only in small amounts in the atmosphere or metal. Such helium and leaked helium are easy to distinguish.
  5. Helium is difficult to be liquefied in a normal environment. It does not block leak holes.
  6. Chemically, helium is an inert gas. It does not cause metal to rust.

Application examples

Application image / Name Name Reference leak specification

Engine

Radiators
Water pumps
Cylinder heads
Cylinder blocks
Oil pans
Engine assemblies
Delivery pipes
Injectors
Common rails
Oil pumps
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-5 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-4 Pa・m3/s or less

Air intake

Intake manifolds
Exhaust manifolds
Turbochargers
Catalytic converters
Mufflers
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less

Air conditioners

Compressors
Condensers
Evaporators
Liquid tanks
Air conditioner pipes
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less

Fuel system

Fuel tank assemblies
Fuel pipes
Fuel pumps
Canisters
Fuel strainers
Inlet tubes
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-7 Pa・m3/s or less
10-5 Pa・m3/s or less

Trans missions

Torque converters
Transmission cases
Cylinder second brakes
Oil pump housings
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less

Wheels

Aluminum wheels
Aluminum temporary wheels
Steel wheels
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
 

Others

Power steering
Steering pumps
Shock absorbers
Air suspensions
Brake master cylinders
Brake boosters
Air tanks
Inflators
10-5 Pa・m3/s or less
10-4 Pa・m3/s or less
10-5 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-6 Pa・m3/s or less
10-4 Pa・m3/s or less
 

Air conditioning-refrigeration field

Air conditioner parts
Evaporators
Refrigerator coils
Compressors
Valve types
Outdoor air conditioner assemblies
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
10-6 Pa・m3/s or less
 

Drums & Canisters

Drum cans 10-4 Pa・m3/s or less
18 liter cans
Stove fuel tanks
Oil cans
Spray cans
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
10-4 Pa・m3/s or less
 

Home electronics

Refrigerators
Batteries of all types
Waterproof shavers
Waterproof vacuum cleaners
Waterproof radios
Laundry machine parts
Irons
 
 

Food industries

Showcase heat exchangers
Freezers
Vending machines
Beer casks
 
 

Hydraulic-Pneumatic parts

Hydraulic solenoid valves
Pneumatic solenoid valves
Air cylinders
Couplers
Check valves
 

Business Flow

  1. Consultation with customer about conditions
  2. Consideration of seal methods/confirmation of leak rate
  3.  (Workpiece test/Consideration of conditions and regulations)
  4. Specification presentation/explanation of proposal/regulations submission
  5. Order received
  6. Control specifications/mechanical specifications
  7. Fabrication
  8. On-site inspection/improvements in response to customer feedback/transport and adjustment

Inquiry

TEL : +81-53-467-3601 (FA Division)