One of our Switzerland customer ask us to give him a solution about whether our flow meter is suitable for his conditions or not ?

 

detailed information below:

- Application: Measurement of the liquid engine oil flow that drains from an oil mist filter installed in the crankcase ventilation system.

- Liquid: Engine oil (e.g., SAE40)

- Temperature engine oil < 80 °C

- Viscosity engine oil < 1000 mPas (Typically 100 mPas)

- Pressure: oil not pressurized (free-flowing in hose; only hydrostatic pressure)

- Expected Flow: in the range from 0.3 ml/min to 5 ml/min.

 

According to the customer's information, we introduced our M series to him, especially M2.1 and M5.2

 

Then the customer asked us a question:

The customer assumed that the "gravity height" was the length of the vertical pipe at the flow meter inlet (where the oil column forms). We can choose the length from 2 cm to 20 cm.
Assuming a gravitational acceleration of 9.81 m/s2 and an oil density of 850 kg/m3, these lengths translate into hydrostatic pressures at the flow meter inlet of
approximately 170 N/m2 to 1,700 N/m2. Are these pressures suitable for driving flowmeters with our 100mpa engine oil?

 

The suggestion from our engineer is to ask the customer to increase the height to 60CM or more, then there is no problem at all

 

Finally, the customer chose the model M2.1-AL

M2.1-AL parameters as follows:

Accuracy: 0.5%

medium: Engine oil

flow range: 0.3-150ml/min

Working temperature: -30~80C

Working pressure: 32bar

Output:pulse(hall sensor or reed switch)

Power: 4-26VDC

Housing material: anodized aluminum

Gear material: anodized aluminum

 

Customer Feedback:

We already started testing the CX-M2.1-AL (see attached picture) and so far, we are very satisfied with the performance of the device. Currently we are planning to extend our
tests and use it in the actual engine environment.

 

If you also have similar needs for oil flow meters flow sensor, and want to know how to choose and quote, please contact CIXIFM winny: sales01@cxflowmeter.com