Hygrometer is a kind of humidity and temperature sensing elements that can be used to measure the temperature and humidity and display the cheap Temperature And Humidity Meters changes. It has features of small volume, stable performance, high precision etc. and is now widely used in various sectors of production and life.
Select the range: as measuring weight and temp., first, choosing a hygrometer should determine the measurement range, except and meteorology, research and other industries, it does not need all wet process measurement for temperature and humidity. Select the measurement accuracy: Accuracy is the most important indicator of temperature and humidity sensors, and each ratio increase is a new level for hygrometer, even with higher accuracy rate. As it needs to achieve different accuracies, its production costs vary widely, so is the price.
Considering the time and temp. drift: when using hygrometer, as for the effect of dust, oil and harmful gases, Hygrometers and Thermometers are prolonged used, and the electronic hygrometer will be aged, which will reduce the measurement accuracy. The annual drift of hygrometer is generally about ± 1.5%, or ± 2.5%.
Safely keep the instrument: hygrometer is featured of non sealing, thus under accuracy and stability, please avoid using under conditions of acidic, alkaline and solvent-containing atmosphere. Please avoid placing the sensor near the wall or in a ventilated blind corner. Please place several hygrometers if there is too much space to be measured. http://www.eastmachinery.com/wholesalers-temperature-and-humidity-meters_499.html
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