多种液位仪表的应用对比

从现场应用出发,探讨了差压(压力)变送器、光导液位计、静压法、电容及射频导纳液位计、磁性液位计、超声波液位计、雷达液位计等的可靠性、准确性及其适用介质和环境,并且强调没有任何一种仪表能够适应所有介质或环境,因此,在选用液位仪表时,要从介质特性、使用环境、维修条件、仪表性能、价格等方面综合考虑,不选贵的,只选对的。

Application comparisons of Kinds of Liquid Level Meters

From the point of view of field instrument application in connection with the application experiences for near20years,the reliability,accuracy,suitable medium and environment for differential pressure transmitter,static pressure method,kinds of liquid level meters of photo-conduction,electric capacity,radio frequency admittance,magnetic,ultra-sonic and radio.It is stressed that no instrument is able to suit all kinds of mediums and environments.The comprehensive consideration of instrument selection should include many factors such as medium characteristics,application environment,mainte-nance condition,instrument function and price.It is recommended to chose instrument in the way of preferring right function to high price.