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『Verification regulations for open channel flow meters』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
1... Technical Specification "proposes that portable open channel flow comparison devices should be installed for water pollution sources. HJ3552019" Technical Specification for Operation of Online Monitoring System for Water Pollution Sources "does indeed propose that portable open channel flow comparison devices should be installed for water pollution sources. The specific points are as follows: According to HJ3552019 "Technical Specification for Operation of Online Monitoring System for Water Pollution Source", all water pollution sources must be equipped with ultrasonic open channel flow meters, and strict on-site calibration must be carried out through portable open channel flow meter comparison devices. Calibration process: Liquid level comparison: The portable device has a liquid level measurement accuracy of up to 1mm and will compare the liquid level values measured by the ultrasonic flowmeter at the same water level observation section to ensure the accuracy of water level measurement. Flow comparison: The two synchronously measure instantaneous flow to ensure consistency and reliability of flow data. Device function: The portable open channel flow meter comparison device integrates multiple advanced technologies, such as magnetostrictive level sensors, wireless data transmission modules, image recognition systems, and intelligent tablets. It can capture and analyze the measurement data of open channel flow meters in real time, transmit data through wireless technology, and compare two sets of data in real time. The error is controlled within flow measurement ≤ 3% and liquid level measurement ≤ 0.7mm. The implementation of this technical specification has improved the scientific and accurate manual measurem
2. Regulations for monitoring total water pollutant emissions and measuring flow rates?
1. Enterprises and institutions that implement total monitoring must install automatic sewage flow measurement devices that meet relevant technical requirements at their sewage outlets. The selected sewage flow device must be suitable for the characteristics and discharge of the sewage.
2. Ultrasonic, capacitive, float, or submersible electromagnetic sewage flow meters can be used to measure sewage flow using methods such as flowmeter, weir method, container method, float method, and pressure difference method. The flow meters used must comply with relevant standards and regulations.
. HJ/T15 provides regulations for ultrasonic open channel sewage flow meters. 3. Buildings that can meet the requirements of sampling and flow meter installation must be constructed at the sampling point. Generally, a manhole or a straight open channel of about 10m should be built to meet the requirements of sampling and flow measurement. If standard measuring channels (such as rectangular, trapezoidal, or U-shaped channels) are constructed, or standard measuring weirs (such as rectangular thin-walled weirs, triangular thin-walled weirs, etc.) are constructed, the measuring channels and weirs used must comply with the requirements of relevant standards and regulations. The requirements for commonly used simple flow measurement methods for sewage outlets are as follows:(1) The bottom of the discharge section of the flowmeter method should be hard and smooth, with a regular geometric shape. There should b