摘要
采用电容式原油含水率传感器,运用新型的电容数字转换器AD7746实现传感器微小电容的高精度测量,从而设计出了新的原油含水率测试仪。文章介绍了测量原理和设计方案。在实验室用柴油和自来水配制油样进行了测试,测试结果表明本测试仪具有较高的测量精度。
A new type of crude oil's water cut meter is designed based on the capacitive water cut sensor,while the new capacitance-to-digital converter AD7746 is applied to measure the small capacitance of sensor with high precision.This paper presents the measurement principle and main design of the meter.Experimental results for the mixture of tap water and diesel oil in the laboratory show that the meter can measure the water cut with high precision.
出处
《石油仪器》
2008年第3期1-3,99,共3页
Petroleum Instruments
关键词
电容数字转换器
含水率
电容传感器
∑-△技术
capacitance-to-digital converter
water cut
capacitive sensor
sigma-delta technique
