MUE 現代超音波有限公司 Modern Ultrasonic Engineering Co., Ltd.

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《1》Ultrasonic Testing FAQs

1-1

Q：

A：

Is the MUE18T Ultrasonic Pressure Meter's measurement reliable?

Yes, it is reliable. MUE18T has the calibration standard. To ensure the standard is consistent, we provide calibration service for our customers. Our production instruments are calibrated by ITRI regularly.

1-2

Q：

A：

Why is the measurement unit of ultrasonic pressure meter MUE18T not using power W or the pressure Pa, but AC voltage mVrms?

Regardless what measurement unit be use, if the measurement principle and method are same as MUE18T, they are only measure ultrasonic intensity in liquid.

The ultrasonic intensity in liquid are effected by two main factors, amplitude and frequency of vibration. We found that the AC voltage mVrms used as a reference unit of measurement, can be true to show the ultrasonic intensity in liquid as well as its relationship with the main effect factors. Also it could avoid conflicts with the law of conservation of energy.

1-3

Q：

A：

Why is the higher the vibration frequency of the cleaners, the greater the measured value of the pressure meter, but the electric power of the cleaners are same?

The reason is same as above. Because the ultrasonic intensity in liquid are effected by two main factors, amplitude and frequency of vibration. Their relationship are proportional.

We could detect the ultrasonic intensities in the room temperature pure water by hand for compare testing. The greater the vibration amplitude, feel the more tingling; the higher the frequency, feel the more tingling too. The results are exactly match the measured values of the pressure meter.

（Pay attention! Don't put your hand into solvent, hot water, or water with high frequency or high strength ultrasonic, to avoid hazards.）

1-4

Q：

A：

What should be noted when using ultrasonic pressure meter to measure and record?

Each measurement should be carried out under the same conditions as far as possible, such as the depth of the ultrasonic pressure rod into the water, the temperature of the water in the tank, the loading of the work-piece, and the operating current of the ultrasonic generator etc. It is recommended to record these together as measurement conditions, These results would be more useful for the analysis and comparison.

1-5

Q：

A：

How to choose an ultrasonic pressure meter? MUE18T or MUE18THF?

If use for measure the oscillation frequency lower than 300KHz, should choose the standard model MUE18T.

If use for measure the oscillation frequency higher than 300KHz, should choose the high frequency model MUE18THF.

1-6

Q：

A：

Under what situation need to install MUE19 Ultrasonic
Pressure Monitor?

[1] When the operation of ultrasonic equipment on the production quality yield a great impact, need for full monitoring;

[2] When there are many test points, the measurement affects the operation of ultrasonic equipment;

[3] When the ultrasonic equipment has hazardous materials, not suitable for hand-held measurement.