JJG 2084-1990 Alternating Current Measuring Instrument Verification System JJG2084-1990 standard download decompression password: www.bzxz.net
Alternating Current Measuring Instrument Verification System is a procedure for transferring the national alternating current standard to the alternating current metering instruments of various accuracy levels or uncertainties, such as alternating current standard sources and alternating current and direct current meter converters, to transfer the alternating current unit value.

Verification System of AC Current Measuring Instruments
JJG2084—15H0
Verification System of AC Current Meters
Verification Sehene or Measuring InstrumentsforAC Current
JJG 2084—1990
This five metrological verification systems were approved by the State Technical Supervision Commission on November 24, 1992, and started on May 1, 1901.
Starting Unit: China Academy of Design and Researchwww.bzxz.net
This verification system is the drafting unit of the technical department of the document, and the main drafters of this verification system are:
Zhang Deshi
Wei Caichen
[China Academy of Design and Research Institutes)
(China Academy of Design and Research Institutes
Current Standard Instruments Co., Ltd. t||Measuring standard group…
Working meter
Four AC current meter calibration system
AC current meter calibration system
AC current standard calibration system is connected to the AC current standard of various brands, AC current meter, AC current filter converter and other AC current meter instruments with the same accuracy or the same or different accuracy. The program is as follows:
It is suitable for AC current 1(Im/~-1I Range: Frequency Range Iti4. -1.50m0Hz AC current measurement and calibration process.
A measurement standard is the national measurement instrument for reproducing and guaranteeing the value of AC current. It is a standard device for AC current conversion with AC current ratio standard. It is an AC current standard device: it is an AC current standard with a frequency range of 10r:1410A, 40~15000z and an AC current standard instrument. It is a main measurement instrument of the national AC current standard: 2.1 AC current sensor and AC/DC current sensor. Current conversion thermoelectric ratio meter, current transformer original current range 50m~10A eight-range, the output current rating is 5mA, the operating frequency is 14·-15(0CH. It is combined with the thermoelectric comparator composed of the commercial accuracy AC/DC current conversion standard, the uncertainty is 1×-5
2.2 and AC/DC current conversion thermoelectric comparator: the DC current device connected to the instrument is mainly the first current working standard 100 resistor. DC digital voltmeter and high-precision current source. The overall measurement current is not required to be 110
In addition, the AC/DC current conversion thermoelectric comparator is also equipped with a high-sensitivity ammeter, which uses the UI-42 DC comparator with a potential difference of 1.1V, and a precision of 2=1×10-3. The range of the AC current standard is 101rA-10A, the frequency is 40-15000Hz, and the total precision of the AC current conversion device is (2~3)×10-\. 2. Measuring standard instruments
4. The AC current meter only needs an AC standard current source, an AC standard silicon meter and an AC/DC current conversion calibrator. The total precision of the instrument is 8-(0.5~1)×10-\-(2~5)×10-\, and the value is transferred by the AC current standard through the direct comparison method or through the comparison. The latter is transmitted by the former according to the detailed information and uncertainty requirements of the instrument to be transmitted or verified. The difference in uncertainty between them should be less than 3 times the uncertainty of the instrument to be transmitted or verified, so as to ensure the reliability of the value transmission and verification. 4.1 AC standard current source
H The current AC standard current source is divided into grades, which are generally expressed by uncertainty> and are divided into [0.51×0 42=（2-5) 10 taels according to the measurement standard measuring instrument.
Measurement range: 10A~20A. An AC transconductance amplifier with a frequency of 40-15000Hz and an external frequency that can convert AC power into a constant (relatively high) current. The maximum output current is 2A, and the maximum value is 6=5×". The frequency is 40-50001z, etc. It can also be compared with its side value.
4.2 Special AC ammeters
AC standard ammeters include analog indicating measuring meters and digital instruments. The measuring indicators are divided into grades, and digital AC ammeters are indicated by degrees. According to the measurement standards, they are divided into two categories: [2-1=]×1U-4. The basic difference between the grades of AC indicating instruments is that they can be divided into one of the two categories. In addition, the AC power supply standard meter is accompanied by an expanded measurement standard (for example The current sensor or shunt is used according to the actual situation to determine the uncertainty requirements of the maximum value of the transfer line. 4.3 AC/DC current converter
The AC/DC current converter is a standard device for the transfer of AC current and the voltage range of the AC current. It is also divided into two categories with an uncertainty of = (0.5~11×10-4 and -(2~×104). The measurement range of the AC/DC converter standard is 1Dm·-1, and there are also special AC/DC current converter standards with a range of less than 0mA and more than 10A. At the same time, the most widely used one is the combination of a resistor shunt and an AC/DC current converter. Measurement range: 10mA-10A, frequency range: 4-·1MIz AC/DC converter standard. In addition to the transmission of the current value, the corresponding DC standard current that should be maintained should also be equipped with a card. The AC current measuring standard below IUmA and above 10A can be used to transmit the value through a suitable key comparison. The main type and level of the product is determined by the key comparison. The AC current measuring instrument with the function of measuring the AC quantity and other similar AC current measuring instruments, the uncertainty and error must be attributed to the above-mentioned special standard instruments for value transmission or inspection. After the two-level weak current measuring instrument is determined, it is divided into a certain degree? (1~5×10 and =1-5)×-two years old. The AC analog indicating meter is divided into 0 The uncertainty of the AC current measuring instrument of level 1.5 is (15)×10-3, the uncertainty of level 1.0 is (1-5)×10-3, and the uncertainty of the AC current measuring instrument of level 1.5 is (15)×10-3. The uncertainty of the AC current measuring instrument of level 1.0 is (1-5)×10-3. The uncertainty of the AC current measuring instrument of level 1.5 is (1- ... For example: 1.1 level AC monthly value table signing, daily select a certain accuracy 6 = 2 × 10-4 standard current meter, you can also use the uncertainty of 2 = 1 × 10-2 variable DC current conversion standard and AC standard current source. Note: AC current working measuring instruments include all comprehensive and multifunctional receiving meters and instruments for measuring current and various current transmitters for measuring current. : Measurement range In addition to the AC current calibration quantity, it also includes the meter and the instrument with a standard ratio (such as a self-satisfied current meter or a shunt), and there is no voltage meter. 59
Four-way AC current measurement instrument calibration system According to the AC current measurement instrument calibration system diagram
AC current measurement: 11.0115
Frequency: 4015000z
Titration reduction 2×10
Net: 1×11
True method & Yan's control let
AC construction seven reduction sample news
# (0.5 -) × 10 *
Comparison
AC hard current calibration quantity
1mA-1A
- (2--5) * 10**
interchange table
- ;1 -5)×1
standard central exchange electricity more inquiry
10aA-10.s
~1500H
#-:0.51:16
interchange construction production flow right ratio collection
1/-10.yuan
40 -- 15000Hb
2 -(2-x*
various must steam electricity
special quantity and network direct technology
=(1--5)×)
ratio trend
interchange execution electricity building variable light measurement only
-{[-5)×10-
: sky-high price# (K
J0ma-134
4015000[1z
8= (0.5.-:)×:U
Cross-washing standard electroplating ticket treatment
Award place
F- (1--3) x 0-:
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