Digital measurement and test ammeter calibration

Digital measurement and test ammeter calibration

The device is according to verification regulation JJG124-2005 "ammeter, voltmeter, power table and resistance meter calibration regulations, JJF1075-2001" clamp ampere ammeter calibration the requirements of the "standards for the design of 0.05 magnitude ac and dc standard units. The source of the signals of the DSP and 16 high-speed digital-to-analog converters can control of the sine wave, distortion wave source. The display USES graphics standard 240 x 128 LCD monochrome screen, chart characters, showed clear. Circuit design perfect protection, reliable operation, easy to operate.

Main Functions and Features

1. The device consists of a single-phase ac voltage standard resource, current standard resource and dc voltage, current standard resource of standard resource.

2. Have calibration function, which can according to the standard of external value, fixed standard resource output values.

3. The setting of the range for verification 1999 (9), 3999 (9) a display of the digital multimeter.

4. Manual and semi-auto inspection 0.2% and below levels of digital multimeter, an analogue meter installation type digital instrument, including dc analog output of digital instrument; All kinds of clamp ampere ammeter; Verification clamp ampere ammeter range for 200 A, 600 A, 1000 A.

5. To generate containing 2 ~ 31 harmonic wave distortion, the harmonic number, number, amplitude and phase of the harmonic wave to base wave all can be programmed control.

6. With RS232 interface and large capacity non-volatile memory, can store 500 blocks are inspection table test data. Through the PC software, the PC control this device automatic and manual inspection, and the results are processing and management.

Technical Data

AC output

Voltage range: 200 mV, 400 mV, 2 V, 4 V, 20 V, 100 V, 200 V, 500 V, 1000 V;

Current range: 20μA, 40μA, 200μA, 400μA, 2mA, 4mA, 20mA, 40mA, 0.2A ,0.5A, 2A, 5A, 10A, 20A;

Clamp ampere ammeter range: 200A, 600A, 1000A;

Adjusting range 0 ~ 120% (1000 V voltage except);

Adjust fineness 5 x 10^-5;

Voltage, current output capacity 20 VA;

Voltage, current adjustment for accuracy

± (0.03% RD + 0.02% FS);

Voltage, current output stability ≤0.01% / 60 s;

Voltage, current waveform distortion degree ≤0.3%;

Sine wave output frequency range (45-65) N Hz (N = 1, 2, 3,...... 31);

Sine wave frequency output fineness 0.001 N Hz (N = 1, 2, 3,...... 31);

Phase adjustment range 0 ~ 359.99°;

Phase adjust fineness 0.01°;

Harmonic output 2 ~ 31times, range 0 ~ 20% (base wave ratings);

Harmonic phase fineness 0.01 ° N (N for harmonic frequency, N = 2 and 4...... 31);

Output can also contains multiple harmonics, also can set base wave amplitude is 0, output power frequency than the sine wave.

DC output

Voltage range: 200mV, 400mV, 2V, 4V, 20V, 40V, 100V, 200V , 400V ,1000V;

Current range 20μA, 40μA, 200μA, 400μA, 2mA, 4mA, 20mA, 40 mA, 0.2A, 1A, 2.5A, 5A, 10A, 20A;

Voltage, current, adjusting range 0 ~ 120% (1000 V voltage except);

Voltage, current adjust fineness 5 x 10^-5;

Voltage output capacity 20 W;

Current output capacity of 30 W;

Voltage, current adjustment for accuracy ± (0.03% RD + 0.02% FS);

Voltage, current output stability ≤ 0.01% / 60 s;

Voltage, current output ripple ≤1%.

Frequency output

Sine wave output range (using AC voltage, current output provide)

(45-65) N Hz (N = 1, 2, 3...... 31);

Fineness 0.001 N Hz (N = 1, 2, 3...... 31);

The setting accuracy 5 x 10^-5;

Point 1 KHz square wave frequency output, 5 KHz, 10 KHz, 50 KHz, 100 KHz, 200 KHz, 1000 KHz;

Square wave amplitude 4.5 V.

Electronic resistance box output

Quantity process

0 ~ 200 Ω, 200 ~ 400 Ω, 0 ~ 2 K Ω, 2 K Ω ~ 4 K Ω, 0 ~ 20 K Ω, 20 K Ω ~ 40 K Ω, 0 ~ 200 K Ω, 200 K Ω ~ 400 K Ω, 0 ~ 2 M Ω, 2 M Ω ~ 4 M Ω;

Fineness 0.025%;

Setting accuracy ± (0.12% RD + 0.08% FS).

Work power

Single-phase AC 220 V±10%, Frequency 50/60 Hz.

Use of the environment

Temperature 10°C~40°C, Relative humidity ≤85% RH.

Volume and weight

440 mm x 450 mm x 160 mm, about 12 kg