Yesterday, the reporter learned from the Ningxia Institute of Metrology that the new standard "open channel weir channel flowmeter verification device" passed the assessment and acceptance of the expert group of the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China.

Open channel flow meter is a sewage flow meter, mainly used for industrial wastewater discharge monitoring. Previously, the verification of flowmeters used by enterprises in our district needed to be sent out of the province for inspection, which had high testing costs and low accuracy. "The flowmeter cannot be disassembled and assembled at will, but it must be removed when tested outside the province, and then installed back after the test, which affects the accuracy of the flowmeter." Zhou Lihua, a staff member of the Ningxia Institute of Metrology, said, "The flow meter generally requires a two-year inspection, and many companies will self-calibrate once when they use it for a year, that is, the enterprise itself compares the test, so that the accuracy and persuasiveness will be greatly reduced." ”

Recently, Ningxia Metrology Institute introduced a portable open channel flowmeter verification device, and passed the assessment of the State Administration of Quality Supervision to formally establish this standard. This verification device can detect the accuracy of sewage flow meters and enterprise and environmental monitoring instruments quickly, simply and intelligently on site. "In the future, enterprises will not need to disassemble and assemble the flowmeter to send it to other provinces and regions for inspection. If testing is required, we can go to the site at any time to accurately verify, which can not only ensure that the open channel flowmeter meets the relevant standard requirements, but also provide technical support for the monitoring accuracy of sewage discharge enterprises, treatment plants and environmental protection departments in the whole region and surrounding areas. Zhou Lihua said.