一种立式磁致伸缩液位计校准装置的研制

Development of a Vertical Calibration Device for Magnetostrictive Liquid Level Meter

作为一种高精度液位测量装置,磁致伸缩液位计应用日渐广泛。针对现有磁致伸缩液位计校准装置存在的操作复杂、设备占地面积大、精度相对较低等问题,设计了一种立式磁致伸缩液位计校准装置,采用高精密光栅尺作为测量标准,应用机械定位方法实现液位计的快速装调,采用竖直导轨系统自动实现浮子的上下定点移动,通过专用控制软件实现液位计的自动精确测量。对该装置进行测量不确定度评定,证明其具有很好的准确性与可靠性,可有效满足紧凑空间下测量范围为0~2 m的磁致伸缩液位计的校准需求,具有技术推广价值。

As a high-precision liquid level measurement device,magnetostrictive liquid level gauge is widely used.Aiming at the problems existing in the magnetostrictive liquid level meter calibration device,such as complicated operation,large equipment area and relatively low accuracy,a vertical magnetostrictive liquid level meter calibration device is designed.A high-precision grating ruler is used as the measurement standard,the mechanical positioning method is used to realize the rapid adjustment of the liquid level meter,and a vertical guide rail system is used to automatically realize the up and down fixed-point movement of the float.The automatic and accurate measurement of liquid level meter is realized by special control software.The measurement uncertainty of the device is evaluated,which proves that the device has good accuracy and reliability.It can effectively meet the calibration requirements of magnetostrictive liquid level gauge with a measurement range of 0~2 m in compact space,and has the value of technology promotion.