How often is the ultrasonic flowmeter identified?
Almost half a year, usually you look at the coupling agent, there is no weathering, or what, just need to test it
If electronic products are stable enough, they don't need to be calibrated too often
According to the requirements of ultrasonic flowmeter JJG1030-2007, the calibration cycle shall not exceed 2 years. To insert flowmeter, such as flow meter with self diagnostic function, and can keep the alarm records, can also test every 6 years once a year in the use of the use of on-site inspection, but the premise is to make a sound check every year, for more than 0.2% of the velocity error can not be checked, which requires the measured medium the composition is quite stable, it is best to use HPLC to measure. At present, the domestic ultrasonic flowmeter is 2 years a test.
