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Calibration detection device for time ampere meter

A detection device and ammeter technology, applied in the direction of measuring device, measuring electrical variables, instruments, etc., can solve the problem of inability to realize the traceability of time ammeter, and achieve the effect of complete traceability chain, good reproducibility, and reasonable calibration and detection

Active Publication Date: 2014-07-02
ZHEJIANG YONGTAILONG ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no special detection equipment for the time ammeter (milliampere stopwatch) to realize the calibration and detection of the time ammeter, and of course it is impossible to trace the source of the time ammeter (milliampere stopwatch)

Method used

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  • Calibration detection device for time ampere meter
  • Calibration detection device for time ampere meter
  • Calibration detection device for time ampere meter

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Embodiment Construction

[0032] A calibration and detection device for a time ammeter, comprising an outer casing and a calibration detector, characterized in that:

[0033] The control panel 20 of the outer casing is provided with an LCD display screen 1, a time traceability port 2, a current traceability port 3, a current output port 4, a current input port 5, a communication port COM6, and a keyboard 7, all of which are wired and calibrated detector The corresponding interface is connected.

[0034] Among them, LCD display screen 1 is mainly composed of 12864 LCD screen produced by Beijing Qingyun, which has its own Chinese character library, which can display 4 lines of text; time traceability port 2 is mainly composed of BNC (Female) connectors, which can output specified pulses during traceability Wide (10ms~1000ms, step precision 10ms) positive pulse signal and 1pps square wave signal, the time parameter of the present invention can be traced according to the pulse width of the positive pulse during...

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PUM

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Abstract

A calibration detection device for a time ampere meter comprises a calibration detector, wherein the calibration detector comprises a display module, an MCU, a timing module, a DA module, a voltage source module, a current pump module, an output protection module, a sample resistance module, an AD module, a communication module, a storage module and a keyboard module. An LED display screen, a time tracing port, a current tracing port, a current output port, a current input port, a communication port and a keyboard are arranged on a control panel of a casing body and connected with interfaces of the calibration detector correspondingly through flat cables. The calibration detection device is capable of performing calibration detection on the time ampere meter, convenient to use and high in detection accuracy.

Description

Technical field [0001] The invention belongs to a measurement calibration detection device, in particular to a calibration detection device of a time ammeter (milliampere stopwatch). Background technique [0002] The time ammeter displays the product (unit: milliamp second, symbol: mAs) of the current (unit: milliampere, symbol: mA) and time (unit: second, symbol: s) as the measured value. Although the existing standard current source (no matter it is DC or AC) can only output a single DC current or sine wave AC current, and the output load capacity is limited, it generally cannot adapt to the higher input resistance (10Ω~100Ω) of the time ammeter. ), the accuracy of the DC current is very high, but it cannot output a controllable time-current product signal, and it cannot give an accurate time indicator, nor can it achieve repeated measurements (the measurement is not reproducible). The measuring current of the time ammeter is as large as 1000mA, and the measuring accuracy of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 宋丽霞孙家林李诺金月红
Owner ZHEJIANG YONGTAILONG ELECTRONICS
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