Portable dew point sensors can be used for pressure measurement and control

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This article is reposted from: http://www.shqyyb.cn/Tec/151.html Keywords of this article: Portable dew point sensor. http://www.shqyyb.cn/ The portable dew point sensor features a fully stainless-steel sealed structure, offering excellent moisture resistance and outstanding compatibility with various media. It can be used for pressure measurement and control in medical power, air conditioning, diamond presses, metallurgy, vehicle braking, building water supply, industrial equipment, chemical engineering, etc. The main cooling methods for portable dew point sensors include compressed air cooling, mechanical cooling, thermoelectric cooling, and cooling using liquefied gases or dry ice. The main detection methods for dew point condensation include: piezoelectric detection, visual observation, and photoelectric detection. The advantage of the piezoelectric detection method is that supercooling can be determined through pressure detection. However, in general, users of dew point meters employ a photoelectric measurement method with relatively high accuracy; nevertheless, this method has issues such as slow response speed, prone to hysteresis, and difficulty in adjusting the sensitivity of optical dew point measurements. Portable dew point sensors are instruments capable of directly measuring the dew point temperature. A mirror is cooled in humid air containing the sample until droplets of dew begin to appear on its surface; the average temperature of the mirror at this moment is measured, and this value represents the dew point temperature. It features high humidity measurement accuracy, but requires a mirror with very high smoothness, a temperature control system of great precision, and an optical detection system for dew drops with high sensitivity. When in use, the pipeline for drawing in the sample air must be kept clean; otherwise, impurities within the pipeline will absorb or release moisture, causing measurement errors. Features of the portable dew point sensor: easy to operate and convenient to calibrate ； Built-in flow meter, flow control valve ； LCD display, powered by rechargeable battery ； Sensitive response, good linearity, stable readings ； Stable capacitive sensors with a long service life. Shanghai Quanyun Instrument Co., Ltd.
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