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NAGKT-I electrical instrument test-bed
First. Overview
NAGKT-I digital electrical instrument calibration test bench (also called: digital multimeter calibrator, three-table calibrator) is a five-digit LED AC, DC standard voltage, current generator for Calibration digital meters, a variety of hands-meter and DC 0.2, the exchange of 0.5 below the various types of table head. (0 ~ 12MΩ); AC frequency of 50Hz, 60Hz, 400Hz (digital synthesis, the output voltage of the three-phase voltage range of 0 ~ Button to select). The above items and range conversion are converted by internal switches. Using the latest 16-bit A / D converter chip, conversion speed and accuracy has been greatly improved; AC / DC converter with true RMS value to ensure the accuracy of AC output; linearity is good. Using a new type of composite high-power amplifier, the output power of strong, high reliability, low distortion. Output adjustment using imported potentiometer, long life, high fineness regulation. The machine adopts "closed-loop control", the output stability is high. Voltage short-circuit, open current automatic protection, in full compliance with the new three table identification procedures.
Second, the working principle:
The instrument has a digital synthesis sine wave generator unit, power amplifier unit, power and protection unit, range unit, A / D unit, display unit, keyboard unit and standard resistors and other components.
Third, the technical performance:
2.1 Performance parameters:
Item |
Test Range |
Output Range |
Resolution |
Max Output |
Accuracy（23℃±2℃） |
|
DC Voltage
|
500mV |
0~550.00mV |
0.01mV |
100mA |
±（Read value×0.05%+max data×0.01%） ±(Reading value × 0.05% + full scale value × 0.01%) |
5V |
0~5.5000V |
0.1mV |
100mA |
||
50V |
0~55.000V |
1mV |
100mA |
||
500V |
0~550.00V |
10mV |
20mA |
||
1KV |
0~1050.0V |
100mV |
10mA |
||
|
DC Current |
500uA |
0~550.00uA |
0.01uA |
2V |
±（Read value×0.1%+max data×0.02%） ±(Reading value × 0.1% + full scale value × 0.02%)
|
5mA |
0~5.5000mA |
0.1uA |
2V |
||
50mA |
0~55.000mA |
1uA |
2V |
||
500mA |
0~550.00mA |
10uA |
2V |
||
5A |
0~5.5000A |
100uA |
1.5V |
±（Read value×0.1%+max data×0.04%） ±(Reading value × 0.1% + full scale value × 0.04%) |
|
10A |
0~11.000A |
1mA |
1.5V |
||
AC Voltage |
500mV |
0~550.00mV |
0.01mV |
100mA |
±（Read value×0.1%+max data×0.05%） ±(Reading value × 0.1% + full scale value × 0.05%)
AC I 1mA not included
|
5V |
0~5.5000V |
0.1mV |
100mA |
||
50V |
0~55.000V |
1mV |
100mA |
||
500V |
0~550.00V |
10mV |
20mA |
||
1KV |
0~1050.0V |
100mV |
10mA |
||
|
AC Current |
500uA |
||||
5mA |
0~5.5000mA |
0.1uA |
2V |
||
50mA |
0~55.000mA |
1uA |
2V |
||
500mA |
0~550.00mA |
10uA |
2V |
||
5A |
0~5.5000A |
100uA |
1.5V |
±（Read value×0.1%+max data×0.01%） ±(Reading value × 0.1% + full scale value × 0.01%) |
|
10A |
0~11.000A |
1mA |
1.5V |
||
Middle Data Resistace |
Display Data |
Power |
Accuracy |
||
|
10Ω、24Ω、50Ω、100Ω、240Ω 500Ω、1kΩ、2.4kΩ、5kΩ 10kΩ、24kΩ、10kΩ、24kΩ 50kΩ、100kΩ、240kΩ、500kΩ、1MΩ、2.4MΩ 5MΩ、10 MΩ、24 MΩ |
0.25W
|
±（Display data×0.1%+10mΩ） ±（Reading value×0.1%+10mΩ）
|
|||
2.2: AC distortion: less than 1%.
2.3: DC ripple factor: not more than 0.5%; current 10A not more than 3%.
2.4: Stability: the instrument warm-up after one hour, 1 minute output drift should be less than the full range of the basic range of ± 0.05%, for precision measurements need to warm up 2 hours.
2.5: Overall dimensions: 480 × 340 × 134 (mm).
2.6: Weight: 10Kg.
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