Automotive

automotive

HVAC

hvac

Fire Extinguisher

fire-extinguisher

Gas Meters

gas-meter

SF6 Switchgear

sf6
hard vacuum leak test machine

Hard Vacuum Leak Testing

Hard vacuum leak testing is currently one of the most widely used methods.

It involves placing the component within a vacuum chamber that is connected to a helium mass spectrometer. This method enables all joints to be tested with very high levels of sensitivity and reliability.

It is the standard method for testing all leaks below 1 x10-3 mbar.l/sec.

With this objective in mind our engineers will always design the machine you require in line with your technical requirements and within your financial possibilities.

  • Single or multiple tracer gas systems
  • Helium sniffer probes to help locate the leak path
  • Manual or fully automatic or partial automatic systems
  • Fully or partly integrated into manufacturing lines or stand-alone systems
  • Production rates to suit your needs
  • Leak rates as low as 1.0 E-9 mbar·l/s
  • Test pressure - to suit your needs
  • Programming Software – to suit your needs
  • Product traceability system (barcode reading, barcode printing, engraving, pin-dot marking, label-printing, data acquisition, data-storage)
  • PLC/PAC types – to suit your needs (typically Rockwell/Allen-Bradley, Siemens, Mitsubishi, Omron, Toshiba, Wonderware/In-Touch)
  • Ability to connect to your system remotely for repairs and troubleshooting
automotive parts leak testing machine

Automotive

The quality demands of world class manufacturers are very high, particularly for the automotive industry. Leaks being found after a component has been assembled into a vehicle, are simply not acceptable to the motor manufacturers. The cost of poor quality in warranty costs, and potentially the loss of customers is enormous. 100% leak testing of products as part of the production process enables quality to be guaranteed.

Applications for automotive component manufacturers are diverse, including all air conditioning parts, all fuel system parts (to avoid emissions), air suspension systems, suspension air spring, engine, gear box, brake systems, cooling systems etc.

All pressurised automotive components need to be tested for leaks. For many of these components the leak rate limits are too tight for traditional pressure decay methods. Helium leak testing guarantees the leak tightness of the whole component sent on to your supplier.

Typical Applications & Specifications

  • Alloy wheels
  • fuel lines
  • fuel rails
  • charcoal canisters
  • charge air coolers
  • evaporators
  • condensers
  • radiators
  • air suspension
  • air bags
  • fuel tanks
  • filler pipes
  • flanges
  • Fuel tanks - based on a 15 micron hole, and are equivalent to a helium leak rate of around 5.0 e-5 to 5.0 e-4mbar·l/s
  • Filler pipes – based on a 15 micron hole, and are equivalent to a helium leak rate of around 5.0 e-5 mbar·l/s
  • Flanges - typically around 2.0 x 10-6 mbar·l/s [the flanges then becoming part of the fuel tank]
In summary:
  • Tailored to suit production TAKT times
  • Saves on Warranty Costs
  • Enables Quality to be achieved and maintained
  • Compliance with current laws & adaptability for future changes
HVAC leak test machine

HVAC / Refrigeration / Refrigerant Leak

Refrigerant gases are harmful to the environment, so stringent acceptable losses are applied, typically equivalent to a car tyre going flat in 40+ years!

Typical Applications & Specifications

  • heat exchangers
  • refrigerated trucks
  • heat pumps
  • refrigerators
  • air-conditioning units
  • aircraft cooling systems
  • condensers
  • evaporators
  • compressors (scroll or hermetically sealed)
  • all HVAC components
  • Condensers – 0.1 to 3 grams / annum of gas, equivalent to around 2.0 e-5 mbar·l/s of helium
  • Evaporators – 0.5 to 3 grams / annum of gas, equivalent to around 2.0 e-5 mbar·l/s of helium
  • Compressors – 0.1 to 3 grams / annum of gas, equivalent to around 2.0 e-5 mbar·l/s of helium
  • Aerospace cooling systems < 0.2 micron hole, equivalent to < 1.0 e-6 mbar·l/s of helium
In summary:
  • Tailored to suit production TAKT times
  • Saves on Warranty Costs
  • Enables quality to be achieved and maintained
  • Compliance with current laws & adaptability for future changes
fire extinguisher leak test machine

Fire Extinguishers

According to the NFPA portable leak standard, 'The leak test requirement for stored pressure and self-propelled types should be sufficiently sensitive to ensure that the fire extinguisher remain operable for at least one year'

The leak rate is incredibly small especially for small extinguishers – the equivalent leak on a car tyre could take more than 250 years to go flat! If the stored pressure has leaked away it won't work, which can have disastrous consequences for lives and property!

It is not possible to use helium sniffing equipment as leak rates are way below atmospheric levels. For a simple air under water test, it would take more than 6 minutes for a single bubble to form!

100% leak testing with a hard vacuum tracer gas system method guarantees leak tightness. Helium leak testing (by including a 5% helium mix inside the propellant gas) is a proven technique and is used widely.

In summary:

  • Ensures safety to customers
  • Demonstrates due care has been taken to ensure the product is safe
  • Saves on Warranty Costs
  • Enables Quality to be achieved and maintained
  • Compliance with current laws & adaptability for future change
gas meter leak test machine

Gas Meters

Domestic gas meters must be tested during the manufacturing process for both their operation and leak tightness.

Leak rate levels typically equivalent to a leak rate of 1.0 e-6 mbar·l/s using helium

In summary:

  • Ensures safety to customers
  • Demonstrates due care has been taken to ensure the product is safe
  • Saves on Warranty Costs
  • Enables Quality to be achieved and maintained
  • Compliance with current laws & adaptability for future changes
SF6 switchgear leak test machine

SF6 Switchgear

Leak testing is of paramount importance to ensure safe operation of the switchgear during its lifetime. 'Vacuum Switchgear' must maintain their vacuum in order to prevent arcing within the switch.

Likewise 'gas insulated switchgear' must maintain their pressure level to prevent arcing when the contacts open. Sulphur-hexafluoride (SF6) is used due to its dielectric properties. However, SF6 is one of the most potent greenhouse gasses and so cannot be released into the atmosphere. Strict control is maintained over its usage, with every gram accounted for.

Leak rates are specified at 1% volumetric loss per annum (IEC 60694), which is equivalent to helium leak rates in the range of 1.0e-6 / 1.0e-7 mbar·l/s

In summary:

  • Ensures safety to customers
  • Demonstrates due care has been taken to ensure the product is safe
  • Saves on Warranty Costs
  • Enables Quality to be achieved and maintained
  • Compliance with current laws & adaptability for future changes