The specific function of the quality method water meter verification device

People cannot live and work without water.The widely used measuring instrument in water quantity measurement is the mass method water meter verification device.The measurement accuracy of the quality method water meter verification device is related to the fundamental interests of thousands of residents.

Therefore, the country implements compulsory inspection for small-caliber civilian use.At the same time, the quality of verification work is closely related to the development of measurement business.Statutory metrology verification institutions use those that have passed the value transfer and passed the assessment of the government metrology administrative department to carry out the verification.very important role.However, in the process of use, due to the influence of some factors, there are certain problems in the accuracy of the measurement results.Therefore, it is necessary to effectively solve the shortage of the device in order to improve the level of verification and measurement work.

Each timing and counting device in the device is respectively connected with the corresponding photoelectric sampler and the pulse control circuit of the servo motor; the protective cover is fixedly connected with the cylinder body of the hydraulic cylinder, the servo motor is fixed on the protective cover, and the servo motor is fixed on the protective cover.The rotating shaft is fixedly connected to one end of the lead screw through a coupling, the other end of the lead screw is connected to the lead screw nut, and the lead screw nut is connected to one end of the piston of the hydraulic cylinder; There is a water inlet and a water outlet of the water tank on the top, the water inlet of the cylinder body is connected to the water inlet pipe through the water outlet of the water tank, the water outlet pipe is installed at the water outlet of the cylinder body; two water inlet pipes are installed at the water tank inlet, the water inlet pipe, and the second water inlet A switch valve is installed on the outlet pipe.The utility model realizes the independent timing and frequency and the collection of the instantaneous volume flow of the piston standard device and the measured mass method water meter verification device connected in series.

As a standard for the unified transmission of flow unit values, on the one hand, it can provide an important guarantee for the accurate and unified transmission of quality method water meter verification devices in various regions of our country, and provide a reliable basis for economic development.On the other hand, it is accounting, trade settlement and other work.When formulating national (enterprise) standards and verification procedures for quality-based water meter verification devices, researched and reliable quality-based water meter verification device test methods can also be used to verify various test data.In addition, in the type evaluation, verification and calibration of various quality method water meter verification devices, it is the standard for judging the measurement performance of quality method water meter verification devices, providing a reliable technical basis for quality supervision departments and measurement technology institutions.At present, the mass method water meter verification device verification device that various measurement technology institutions and production enterprises are using and transforming is still the traditional standard device based on the static volume method or static mass method, depending on the usage of the device and the development trend of new flow technology.During the development process, the above-mentioned traditional devices have highlighted many limitations, mainly in: (1) the static volume method mass method water meter verification device verification device verification efficiency is low, because the static volume method mass method water meter verification device verification The working metering device is generally Gourd-shaped with a measuring neck.Measurement.When using this device for verification, the volume in the measuring device can only be read when the liquid reaches the measuring neck.Therefore, when the verification flow rate is small, the verification time is longer, which shows that the verification efficiency is low; (2) The operation and reading of the static volume method are basically carried out manually, and the measurement uncertainty is large; (3) The static mass method mass method water meter verification The weighing instrument in the device verification device is easily affected by the environment (such as vibration, temperature, humidity, etc.), and the environmental conditions are difficult to guarantee, especially the vibrating pump and pipeline of water, the scale is prone to zero drift, and the accuracy is difficult to guarantee; (4) Not easy Save energy (static volume method, static mass method).