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| Related knowledge of ultrasonic level gauge |
| 2011-11-18 11:11:59 |
而且价格相对比较便宜 。 The ultrasonic level gauge is easy to install, reliable in operation, long in use, and maintenance-free, and is relatively cheap . It is usually used to measure the liquid level or material level in places with a temperature between -40 ° C and 100 ° C and a pressure below 3Bar ( 5kg / cm2 ).
超声波物位计在测量物位时，与被测介质不接触，因此对于腐蚀性的、粘稠的、浑浊的等各种液体的液位测量， 效果最好，用起来最方便直接。 Because the ultrasonic level meter does not contact the measured medium when measuring the level, it has the best effect on the level measurement of various liquids such as corrosive, viscous, and turbid . 对于密闭容器内的挥发性的液体的液位测量， 就要 注意 一些事情了。 But for the level measurement of volatile liquids in closed containers, there are some things to pay attention to. 挥发性的液体会在超声波液位计探头表面凝结，阻挡声波的收发，要求液位计具有可变功率控制功能。 First, the volatile liquid will condense on the surface of the ultrasonic level gauge probe, blocking the transmission and reception of sound waves. It is required that the level gauge has a variable power control function. 容器内气体声速可能与空气中的声速不同，如液位计不能对声速进行修正，则会出现一定的误差； 所以要十分注意其精确性。 Secondly, the sound velocity of the gas in the container may be different from the sound velocity in the air. If the liquid level gauge cannot correct the sound velocity, a certain error will occur; therefore, great attention must be paid to its accuracy. 对于液面剧烈波动的液体 进行测量， If you are measuring liquids with sharp fluctuations , 选用具有自动功率控制功能的超声波液位计 ，或者 在液体中加入塑料管，测量塑料管内液位 。 You can choose an ultrasonic level gauge with automatic power control function , or add a plastic tube to the liquid to measure the liquid level in the plastic tube .