Introduction of Helium Leak Detector:
Helium is an incredibly versatile element, and the fact that it is inert (and therefore safe) makes it highly suited to many applications. Helium molecules are some of the smallest known molecules, making it possible for them to escape through the smallest of holes – this makes it the perfect tracer gas for leak testing. A helium leakage test is carried out using a helium leak detector called a Mass Spectrometer Leak Detector (MSLD). Helium leak tests are done on pipelines, storage tankages, and vessels that carry chemicals, crude oil, petroleum products, or other liquid items to identify minor breaches in these sealed industrial containers. When leaks are found, corrective actions are taken. A helium sniff test is another name for a helium leakage test.
Technical Parameters of Helium Leak Detector:
| Differential Pressure Airtightness Leak Detector Helium Leak Detector Machine |
| Differential Pressure Sensor | Display Precision | The value can be set to 0 to 4 decimal places |
| Sensor Range | 0Pa~±2000Pa |
| Sensor Error | ±0.1% F.S. |
| Direct Pressure Sensor | Display Precision | The value can be set to 0 to 4 decimal place |
| Recommended Test Pressure Range | Standard V5 | VH90B | Mechanical Pressure Regulating | -100kPa~ -1kPa |
| CH050 | Mechanical Pressure Regulating | 5kPa~ 100kPa |
| CH050D | Mechanical Pressure Regulating | 5kPa~ 89kPa |
| CH600 | Mechanical Pressure Regulating | 10kPa~ 600kPa |
| CH600D | Mechanical Pressure Regulating | 5kPa~ 490kPa |
| CH1000 | Mechanical Pressure Regulating | 50kPa~ 1200kPa |
| CH1000D | Mechanical Pressure Regulating | 50kPa~ 890kPa |
| CH4000 | Mechanical Pressure Regulating | 50kPa~ 4000kPa |
| CH500 | Mechanical Pressure Regulating | 10kPa~ 5000kPa (seals leak detector) |
| ZF500 | Mechanical Pressure Regulating | -100kPa~ -1kPa, 10kPa~ 500kPa |
| ZF2500 | Mechanical Pressure Regulating | -100kPa~ -1kPa, 50kPa~ 2400kPa |
| Standard V6 | ZF600 | Mechanical Pressure Regulating | -100kPa~ -1kPa, 10kPa~ 600kPa (Optional) |
| ZF2400 | Mechanical Pressure Regulating | -100kPa~ -1kPa, 50kPa~ 2400kPa (Optional) |
| Sensor Error | ±0.25% F.S. | | | |
| Display Unit | Test Pressure | kPa,MPa,kg/cm2,psi,mbar,bar,Torr,mmH20,mmHg |
| | Leakage Rate | Pa,kPa,Pas,Pa.m3/s,mL/s,mL/min,mL/h,L/min,L/h,SCCM |
| Parameter Program Number | 64 Groups (1~64) |
| Test Beat Setting | 0~99 seconds, test time 1800 second |
| Power Supply | AA220V ±10%, 50Hz |
| Test Pressure Source | Clean, dry, adequate flow, not less than 500KPa and 100KPa above the test pressure pressure source |
| Diamension | Standard V5 | 330mm*222mmm*448mm |
| Standard V6 | 321mm*205mm*460mm |
| Modular | 160mm*268mm*273mm |
| Weight | 20kg |
Difference Between Vacuum Leak Testing and Pressure Decay Detection
In a pressure decay test, also known as a vacuum decay test, a pressure vessel is filled with air until a target pressure is reached. Then the loss (decay) of that pressure is measured over a set period of time.
Applications of Helium Leak Detector:
Each industry and application has different needs. Helium leak detectors are used in almost all applications for the leak testing of pipes, valves, tanks, vacuum systems, refrigeration and air conditioning systems, and research and development. They are particularly useful for detecting small leaks that would be difficult to locate using other methods. Helium is also non-toxic, non-flammable, and does not react with other substances, making it a safe and clean tracer gas for leak detection.
Methods of Helium Leak Detection (Helium Leak Detector)
Helium Vacuum Method
Helium Hood Method
Negative Pressure Method
Vacuum Chamber Helium Leak Detection and Recovery System (external filling)
Sniffer Method
