How to Use Ultrasonic Level Sensor

How to Select Ultrasonic Level Sensor for your liquid level measurement system

1.Influence of the mixer

When the there is mixer in the tank, the liquid will have fluctuation  and this will impact the ultrasonic level measurement, so to solve this problem, the solution can be lower the mixing spee, set the ultrasonic level meter far from the mixer center, also can install a static tube to avoid the impact from the mixing machine

2.Influence of the Foam：

When use Ultrasonic level meter to measure the liquid level, it is common to confront the foam, the foam can be classified to four types: Dry, Wet, Medium, Serious

The Dry and Wet type foam can reflect the ultrasonic wave so it is no any impact on ultrasonic level meter, neutral foam will absorb some ultrasonic wave and will weaken the ultrasonic level refelection and cause instability of wave-back; so when the surface has thick foam, the ultrasonic level meter accurac will be impacted seriousl and in some case,  you can not get failed measurement;

When there is serious and thick foam, we can set a static tube to avoid this problems;

3.Steam and Mist Influence

When the liquid temperature is high, the liquid is ver easy to create steam or mist, due to the steam gravity is small, so the steam will vapor to the top of the tank and isolate the sensor and liquid whici weaken the ultrasonic wave reflection. to install a static tube can solve this problem perfetly.

4.Influence of Blind Zone

Just like People Eye, the ultrasonic level meter has blind area which you can not see anything if the bojetive it too close to your eyes.

MH-A(R) has different blind area with different models, small stroke range has smaller blind zone, and larger range will has larger dead zone, so you should select suitable stoke range for your liquid level measurement system;

5.Influence of Pressure and Temperature

Acoustic Wave can not be transmitted in vacuum condition, so ultrasonic level meter can not be used in vacuum application measurement.

For the temperature, there is limited pressure value for ultrasonic level meter, while when the temperature increases, the pressure will be decreased accordingly, so please be cautious when select our ultrasonic level sensor? when the ulttrasonic level sensor is being used for outdoor application, can install visor to weaken the impact of the temperature

Caution of Static Tube Installation:

MH-A(R) Ultrasonic Level Meter used Patented ECHO-PIPE Technology, and it permit the sensor probes being installed inside of a 2-4 Inches metal or nometal tubes, and it will not be impacted by the tube inner wall reflect waves; so it is perfect solution for mixing, foam, steam and where will generate interrepted waves application; here is some cautions for installation of static tubes:

1. Select Suitable Tube Diameter；

2. the Inner Surface of the tube should be smooth without welding seam；

3. Design a small Hole to balance the Inner pressure and Atomosphere pressure

4. Bottom of the Tube should be under the Liquid Level

5 Design 45 Degree oblique on bottom of the Tube to ensure the liquid can flow smoothly