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MSF-L135K Flow-Type Air Tightness Tester
Mass-flow measurement, resolution 0.01 sccm
Sensor accuracy FS 1 %, range 0.1 – 1000 ml/min
Reads the leak directly as a flow rate – no waiting for pressure decay
For open or continuously leaking parts
Widely used for EV battery packs, motors, controller housings and cooling circuits
7-inch touch screen, 40 parameter sets, RS232 / RS485 / RJ45
Overview
The MSF-L135K measures the leak as a flow rate instead of a pressure drop. Air passing through the leak is led through a flow meter, so the reading is direct and fast – and it stays valid on parts that are open to atmosphere or that leak continuously, where a pressure-decay test would never build pressure at all.
Key features
- Mass-flow detection principle – high-precision flow measurement
- Multiple test ranges covering 0.1 – 1000 ml/min
- Direct leak-rate reading: no decay curve to interpret
- Suited to open volumes, porous parts and continuous leaks
- Widely used for water-proof testing of new-energy vehicle components, power batteries, motors, controller housings and water-cooling systems
How the measurement works
The part is filled with air to the set pressure and the flow valve closes. If the part leaks, gas passes from the reference side through the flow sensor towards the test side, and the sensor reads that flow directly – which is the leak rate.
Technical data
| Sensor accuracy | FS 1 % |
|---|---|
| Resolution | 0.01 sccm (24-bit) |
| Measuring range | 0.1 – 1000 ml/min |
| Test pressure | 0 – 3500 kPa |
| Drive gas pressure | 0.4 – 0.8 MPa (driving pressure should be 0.1 MPa above the test pressure) |
| Pressure units | kPa, bar, Pa, PSI, mmHg, mmH₂O, MPa, mbar, kgf/cm², atm |
| Flow-rate units | in³/d, cm³/min, cm³/s, cm³/h, mm³/s, ml/s, ml/min, ml/h, g/s, g/min, g/h, SCCM, accm |
| Display | 7-inch HD colour resistive touch screen |
| Parameter sets | 40 |
| Time setting | 0 – 99 999.9 s |
| Serial communication | RS485 / RS232 (optional) |
| Network communication | RJ45 (Modbus TCP) standard; PROFINET / PROFIBUS optional |
| USB interface | USB 2.0 – test record download, CSV format |
| Memory | 30-day test record, 128 MB |
| Language | Chinese / English |
| Environment | 0 – 50 °C |
| Power supply | 100 – 240 VAC, 60 W |
| Dimensions | L 320 × W 360 × H 165 mm |
| Weight | approx. 7 kg |
| External control input | 4 sets of PNP input signals |
| External control output | 4 high-level outputs |
| Pressure regulation | Mechanical (standard) / electronic (optional) |
Typical applications
- EV battery packs and water-cooling circuits
- Motors and controller housings
- Filters, porous parts and sintered components
- Open or vented assemblies
- Production lines needing a very short cycle
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