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Calibration and detection device for time ammeter

A technology for detecting devices and ammeters, which is applied to measuring devices, measuring electrical variables, instruments, etc., can solve problems such as the inability to trace the source of time and ammeters, and achieve the effect of improving detection capabilities

Active Publication Date: 2016-07-06
ZHEJIANG YONGTAILONG ELECTRONICS
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  • Summary
  • 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 and detection device for time ammeter
  • Calibration and detection device for time ammeter
  • Calibration and detection device for time ammeter

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Embodiment Construction

[0032] A calibration 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 COMM6 and a keyboard 7, all of which are composed of a cable and a calibration detector Corresponding interface is connected.

[0034]Among them, LCD display screen 1 is mainly composed of 12864 liquid crystal display screen produced by Beijing Qingyun, which has its own Chinese character library and 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, stepping precision 10ms) positive pulse signal and 1pps square wave signal, during calibration, the time parameters of the present invention can be traced ac...

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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 for a time ammeter (milliampere stopwatch). Background technique [0002] The time ammeter displays the product of current (unit: mA, symbol: mA) and time (unit: second, symbol: s) (unit: milliampere-second, symbol: mAs) as a measured value. Although the existing standard current source (whether it is DC or AC) can only output a single DC current or a sine wave AC current, and the output load capacity is limited, it generally cannot adapt to the higher input resistance of the time ammeter (10Ω~100Ω ), 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 index, nor can it achieve repeated measurement (the measurement has no reproducibility). The measurement current of the time ammeter is as large as 1000mA, and the measurement accuracy of milliam...

Claims

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Application Information

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Patent Type & Authority Patents(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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