Problem:
Automotive OEMs require 6 rounds of attenuation validation for engine blocks, transmission gears, and brake components. Each round needs
exactly 5 liters of extraction fluid (cleaning oil, isopropanol, or ethanol). Flow deviation greater than +/- 2% will fail the particle decay curve and reject the batch.
Data from production lines:
Without a precision flow meter, extraction volume error often exceeds +/- 5%, causing false failures.
Filter clogging can drop flow from 5 L/min to 0 L/min in seconds, ruining the entire 6-round test.
Solution:
The M12AL and M9AL oval gear flow meters are now used in automotive cleanliness extraction equipment.
Key data:
Accuracy: +/- 0.5% of reading
Flow range: 0.5 to 25 L/min (ideal for 5 L/min applications)
Pulse output resolution: down to 0.5 mL per pulse
Response time: < 0.1 second for flow drop detection
Real result:
One supplier reduced extraction volume variation from +/- 6% to +/- 0.8%, passed the 6-round attenuation test on the first try, and eliminated sample waste.
Bottom line:
To meet ISO 16232 and GB/T standards, an oval gear flow meter is not optional. It is the only way to guarantee repeatable extraction volume and real-time clog detection.
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