Ultrasonic liquid level meter A non-contact liquid level meter for measuring tanks has the advantages of flexible use, stable performance and high reliability. It is applicable to food, beverage, pharmaceutical and other fields. Today Xiao Bian mainly introduces two common faults and treatment methods of ultrasonic liquid level gauges, hoping to help everyone. The first one is that there is stirring in the field container, and the fluid fluctuation is relatively large, which affects the measurement of the ultrasonic level gauge. Symptoms: No signal or data fluctuations. Reason: The ultrasonic level gauge says a distance of several meters, which means calm water. For example, an ultrasonic level gauge with a range of 5 meters generally means that the maximum distance for measuring calm water is 5 meters, and the actual factory will be 6 meters. When there is stirring in the container, the water surface is not calm and the reflected signal will be reduced to less than half of the normal signal. Solution: 1. Choose a more large-scale ultrasonic level gauge. If the actual range is 5 meters, use an ultrasonic level gauge of 10 meters or 15 meters to measure. 2. If you do not change the ultrasonic level gauge and the liquid in the tank is not sticky, you can also install the waveguide. Put the ultrasonic level gauge probe in the waveguide to measure the height of the level gauge, because the liquid level in the waveguide is basically stable. 3. It is recommended to change the two-wire ultrasonic level gauge to four-wire. The second type: There is electromagnetic interference on site. Symptoms: Ultrasonic liquid level meter data irregularly beats, or simply shows no signal. Cause: Many electric motors, inverters, and electric welding on the industrial site will affect the ultrasonic level gauge measurement. Electromagnetic interference can exceed the echo signal received by the probe. Solution: 1. The ultrasonic level gauge must be reliably grounded. After the grounding, some interference on the circuit board will run off through the ground. And this grounding is to be grounded alone and cannot share a ground with other equipment. 2. The power supply can not be the same power supply as the inverter or motor, nor can it be directly powered from the power system power supply. 3. The installation site should be far away from the inverter, variable frequency motor, high-power electric equipment. If it can not be far away, it is necessary to install a metal instrument box on the outside of the gauge to isolate the shield. This instrument box should also be grounded.
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NOTE:
1. Please contact the corresponding product engineer for specific torque products.
2.The Standard of completion closing:the angle is 90° between Shaft A and Shaft B.
3.It is closing position to assemble the shaft into the housing.
4. Max. cycle rate: 3 cycles/min(Clockwise110 °, 110 ° anti-clockwise for 1 cycle)
5.Operating temperature:0~40℃
6.Storage temperature:-10~60℃
Soft closing time test: Measure the closing time from angle 70 to 0.
Rated Torque (T).
Test Temperature: 23±2℃.
Durability test:
Test Method: From the closing position to opening position, push back to 70°, soft close from 70° to 0°.
Rated Torque (T).
Operation Angle: 0°~110°.
Test Temperature: 23±2℃.
Durability test cycle: 50,000 cycles. The result of product test )>2s.
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When the axis of rotation is moving, the blades that are connected to the axis of rotation rotate at the same time. The silicone oil in the oil chamber is squeezed between the blade andthe body to the back of the blade. The resistance formed by the pressure of the silicone oil to the area of the blade is the damping torque of the rotating shaft and the blade. The torque generated during rotation is determined by the oil viscosity, the pressure area of the blade and the clearance between the blade and the body.
