JJG 2063-1990 Water flow meter calibration system JJG2063-1990 standard download decompression password: www.bzxz.net

Water Flow Measuring Instrument Verification System
JJG 2(M63—1990
Water Flow Meter Verification System
Verification Scheme nf Water Fhw Measring TnstrimentsJ1C2063—1990
This national meter verification system was approved in January 2, 1941 after the national technical inspection: and it was enforced on January 1, 1941.
Drafting unit: China Institute of Metrology The drafting unit of this verification system is responsible for interpretation. The main drafters of this verification system:
Participating drafters:
Xiaoming
(China Institute of Metrology and Quality Research)
Measuring instruments
Measuring standard chain instruments
Counting disk instruments
Water flow meter product instrument verification system diagram
Water flow meter spring instrument calibration system
Eight control system applicable system Research pipeline guard water flow meter to determine the appropriate, it stipulates 1.h.-46m! Seek the use of national scientific research, the reference institute refers to the full-funded technical meter, the reference meter is subject to scientific reference and service, see low, time, density, etc. Its standard and marking and standard run turn plate to achieve the public compliance of the national water flow, indicating the uncertainty and basic risk of the hall meter, etc.
1. Measuring standard instrument
1 Water flow meter is not a fire closed supply channel water flow meter, it is used to specialize in water flow value, so that the national water flow value to reach a unified
1.1 The same pipe small flow meter pressure standard instrument consists of the following parts: a. Water particles
b. Water spring group
center, Le water period
d. Section system
f .Standard evaluation container
g.Meter
h.Thermometer
1.Control console
【，2The secondary flow meter in the closed pipeline is composed of the basic container of the user meter, the point tide source" equal quantity measurement benchmark: timer method direct traceability" time: the most inaccurate temperature training self-connected gradual source temperature must be measured single standard 1.3 The water volume measurement benchmark in the closed pipeline is only used with temperature, quality single, H time, density reference distance individual measurement method to reproduce the flow value, the current flow range is 1.6.-1 liter 1.4 The permanent flow meter in the closed channel is fixed and the accuracy is .1%-, % (3, the letter changes below 95!
Second measurement standard instrument
2: First-class water flow standard instrument which uses temperature, capacity, member single, density, time meter standard measurement disk 3. The first-class water flow standard instrument
has a basic uncertainty of 0.1%-0.2%
4. The second-class water flow standard instrumentbzxZ.net
has an uncertainty of .5%,
5. The standard cruise ship flow meter
has a standard value transfer directly to the reference. Its uncertainty is 2%1332
3. The flow meter can only be used to measure the liquid flow in the pressure medium, and the various concentrated flow meters can be determined by the measurement method or comparison method: the uncertainty of the water injection meter used to calibrate various liquid flow meters is less than or equal to the uncertainty of the calibrated flow meter.
9 flow meter uncertainty and then divided into 1 step year 0.5 discount, four water flow meter calibration system cabinet with measuring tools
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