World Metrology Day, there are instruments to be conscious

Tianjin North Network News:

Yesterday is the World Day of measurement, the daily use of the blood sphygmomanometer, human scales are closely related to the measurement, people often think that these measuring instruments to buy home can be "once and for all" use. In fact, this is a misunderstanding, sphygmomanometer and human scale every year need "physical examination", improper use and awareness of the test is not strong, often lead to the measurement of deviations in value. Yesterday, the municipal quality supervision departments in the city set up 17 advisory Service points, free for the public to detect sphygmomanometer and human scales.

blood pressure is a lot of middle-aged and elderly home of the necessary measurement equipment, yesterday, many people with Sphygmomanometer to the advisory service point for testing. "I feel the blood pressure is very stable recently, but the number measured daily is low, what do you want to see?" At the Civil Aviation University Counseling Service, an old professor came to consult with his own sphygmomanometer. "Ye, the blood pressure sphygmomanometer inside the mercury is less." "The technician detects that the mercury in the sphygmomanometer is reduced, resulting in a deviation in the measured value. Subsequently, the technical staff at the scene for the old man's blood pressure to supplement the amount of mercury.

According to technical staff, improper use of the sphygmomanometer is caused by the deviation of the common factors. Traditional Sphygmomanometer has a switch, sometimes the public forget to close after use, resulting in mercury leakage, which not only adverse to human health, but also directly lead to inaccurate values. In addition, the sphygmomanometer after a long period of time, there will be some dust and air entry, resulting in a stratification of Mercury, which will also affect the accuracy of measurement. In addition, the human body scale in use also should pay attention to light handle, step on the top do not force too much, otherwise will damage the internal sensor, resulting in numerical deviation. Technical staff said that the sphygmomanometer and human scales are mandatory testing scope, need one year of inspection, I hope the public to improve the sense of metrology, regular testing of the commonly used measuring instruments.