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? The JG-ZJF-7 Process Automation Instrumentation scene simulator (avonmeter simulation meter) is one kind of collection number explicit DC voltage, the millivolt, the electric current supply oscillator and the digital avonmeter function in a body's high accuracy, the high resolution, the redundant reliability and has against depreciation performance handhold synthesis digit check meter. The measuring appliance uses the 22mm character high big liquid-crystal display, the reading is clear, simultaneously the measuring appliance also has the EL back light source, in order to optical fiber dark place reading. The measuring appliance is the alternating and direct power source, more convenient use.
?? Measuring appliance signal output and milliampere, the millivolt survey function is mainly aims at the industrial automation scene measuring appliance to implement the scene verification, the overhaul to need to design. This measuring appliance also has avonmeter's general function, is the scene measuring appliance labor, the computer collection and distribution control system attendants, the measuring appliance repairman ideal tool. It has distinguishes between the general electrician avonmeter and the supply oscillator, is the measuring appliance labor avonmeter.
?? The circuitry design take the large scale integrated circuit double integral A/D switch as a core, has the signal output and the test function, its technical performance conforms to the electricity II, the electricity III Process Automation Instrumentation verification standard, the working conditions conforms to GB6587.1-86 "Electronic surveying Instrument Environmental testing General outline" II group of instrument's concerned requirements.
A function and characteristic
*4 1/2 LCD demonstrated that character high 22mm.
* the measuring range has demonstrated “1”, biggest demonstration value 19999.
*24V.DC (30mA.MAX) the power source outputs, may take two system measuring appliances to use 24V.DC to work the power source.
* has 0-10V, 0-100mV, 0-20mV, 0-20mA and the 0-22mA cocurrent supply oscillator, verifies when the scene may simulation each kind II, III and so on measuring appliance output signals.
* has the 0~20KHz frequency output.
* has 200mV, 2V, 20V, 200V, the 700V DC voltage signal measurement files.
* has 20mA, the 100mA direct current signal measurement files.
* has 2V, 20V, 200V, the 700V alternating voltage signal measurement files.
* has 20mA, the 100mA alternating current survey files.
* has 200Ω, 2KΩ, 20KΩ, 200KΩ, 2MΩ, 20MΩ the measure of resistance files.
* has the diode pressure drop and the line passes is out of stock.
* has the 20KHz frequency measurement files.
* has the EL back light source in order to optical fiber gloomy place reading.
* uses group of large capacity charges the battery, when the battery insufficiency “” demonstration in the LCD upper left side.
* according to the international security modular design seal's watch case, has cancelled the battery cover.
Two technical specifications
Accuracy: ± (% reading + number of words), the examination cycle is one year
Ambient temperature: 23±5℃
Relative humidity: It is not bigger than 75%
Three signal outputs
1.?The frequency outputs 0~20KHz ± (0.1% reading +5 characters) resolution 1Hz
2.?DC voltage 24V.DC (±10%)
3.?DC voltage

4. direct current

Four signal measurements

1.?????? DC voltage

Input impedance: All measuring ranges are 10MΩ.

2.?????? Alternating voltage

Input impedance: All measuring ranges are 10MΩ.
Over-load protection: All measuring ranges are the 700V peak values.
Demonstrated: The mean value (transforms as sine wave effective value demonstration).
3.?Direct current

4. alternating current

Demonstrated: The mean value (transforms as sine wave effective value demonstration).