Wide-range weighing apparatus metrological verification method
A technology of metrological verification and weighing instruments, which is applied in the direction of instruments, weighing, measuring devices, etc., can solve the problems of difficult traceability of large-scale weighing instruments, loading and unloading does not meet the verification regulations, and difficult realization of metrological verification, so as to reduce the cost of ex-factory inspection , Reduce the cost of value transmission, and reduce the effect of expenses
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Embodiment 1
[0053] refer to Figure 1-15 , the present embodiment discloses a method for the measurement and verification of a large-scale weighing apparatus 60, the method includes the following steps: (1) sequentially passing through the second bidirectional pump 46, the accumulator 43, the pipeline 44, the liquid storage bag and the The first bidirectional pump 42 loads liquid into the airtight container 10 to make an equivalent standard weight, and the accuracy level of the equivalent standard weight is not less than M 1 (2) Place several equivalent standard weights on the carrier of the large-scale weighing instrument 60 to be verified and compare the sum of the mass of the equivalent standard weights obtained by the large-scale weighing instrument 60 with the true value of the equivalent standard weights The sum of the masses is used to verify the large-capacity scale 60.
[0054] The method can make equivalent standard weights in real time through the airtight container 10 on site...
Embodiment approach
[0100] As an embodiment, when the airtight container 10 is placed on the load-bearing plate 21, the first two-way pump 42 communicates with the airtight container 10 through the water injection drain port 18. The first two-way pump 42 can not only quickly inject water into the airtight container 10, but also can The water in the airtight container 10 is discharged, and the water injection and drainage efficiency of the airtight container 10 is improved.
[0101] As an implementation, refer to Figure 12-13 , the airtight container 10 is provided with an adjustment port, the mass comparator also includes a connected precision bidirectional pump 72 and a hose 71, the free end of the hose 71 is arranged above the table body 22, the hose 71 is in the process of rising of the table body 22 It communicates with the adjustment port of the airtight container 10, and can precisely adjust the airtight container 10 during the weighing process, so that the final value of the airtight cont...
Embodiment 2
[0112] This embodiment discloses a measurement verification system for a large-scale weighing apparatus 60, including: an equivalent standard weight making mechanism, including a loading assembly, a mass comparator 20 and a standard weight 47; a large-scale weighing apparatus 60 verification mechanism, including a closed container 10 and hoisting tool 50; transport mechanism 30, transport mechanism 30 is used to transport airtight container 10 and equivalent standard weight making mechanism. The transport mechanism 30 transports the airtight container 10 and the equivalent standard weight making mechanism to the verification site. The hoisting tool 50 can also be transported by the transport mechanism 30, or can be transported to the verification site by itself or other tools. This system can realize the full-scale verification of weighing instruments 60 with a range of more than 20 tons, effectively complete the traceability of the value of the weighing instruments 60, and ens...
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