NAGKT-I electrical instrument test-bed
Also called name
Digital high-precision electrical instrument test bench, high-precision electrical instrument test bench, electrical instrument test bench, digital electrical instrument test bench, digital multimeter calibrator, three-phase instrument test bench calibrator
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.