DO30-IIBDigitalTriple-Function Meters Calibration Instrument、DO30-IIBTypeMulti-functional Calibration Instrument、Universal Multimeter Calibration Device
I. Application and Features:
DO30-IIBDigitalTri-mode meter calibratorThis is an intelligent AC and DC standard voltage and current calibration instrument (where the AC output is a true RMS display). The instrument features three display windows, capable of simultaneously displaying the actual output value, percentage, and the full-scale value of the meter being tested. The output of the instrument can be set based on the full-scale value of the meter being tested.RangeAnd the step value can be selected according to the scale of the inspected gauge. Output adjustment is selectable.Keyboard(Keypad) control or potentiometer control. Features digital display, error direct reading,RangeWide range, fine gradation, high precision, good stability, and ease of use. Suitable for calibration, inspection, and maintenance of 3.5-digit multi-meters, various 0.2 and 0.5 class pointer-type AC and DC voltage and current meters; also serves as a high-stability test power source, compatible with high-grade standard meters, for calibrating 0.1 class current and voltage meters.
Section II: Main Features:
1 、 5 1/2The LED digital display outputs the quantity in both actual value and percentage formats simultaneously.
2. UtilizeKeyboardControl the increase or decrease of output volume.KeyboardControl quantities are 100%/N, 10%/N, 1%/N, 0.1%/N (N refers to 4, 5, 6, 10, 15).
3 、External Control RegulatorCan control the increase and decrease of output quantity remotely; the regulator features...KeyboardAvailable in two configurations with a switchable option.
4. The AC and DC voltage output range is 0 to 1050V.
5. AC and DC current output range is 0 to 20A.
6. Offers four output frequencies: 50Hz, 60Hz (59.7Hz), 400Hz, 1000Hz, for useCrystal OscillatorEnsure accuracy and stability in frequency.
7. Overload protection with automatic shutdown and manual reset.
8. The 50Hz output can also be synchronized with the local power supply to minimize the impact of the frequency beat on the meter being tested.
9. Clamp Meter Measurement: Equipped with our standard coil, capable of measuring 0-1000A current with an accuracy of ±0.3%.
Four: Technical Performance:
1. Stability: AC < FullRange0.02%/5 minutes
DC < FullRange0.01%/5 minutes
The instrument requires a two-hour warm-up for precise measurements.
2. Communication Distortion: <0.5%
3. Direct Current Ripple Factor: <0.05% (at rated output)
4. Output Frequency Accuracy: 50Hz, 60Hz (59.7Hz), 400Hz, 1KHz < 0.1% (or sync with mains power)
5. Output voltage and currentMedian ResistanceScope and accuracy as per (Appendix 1) (23°C ± 2°C, output value greater than 10%)Range）
Appendix (1)
| Export Items | Output Range | Rated Output | Peak Output | Accuracy |
| AC/DC Voltage | 0～300mV | 20mA | 100mA | Basic Error: |
| 0～1V～3V | 50mA | 100mA | ||
| 0～5V～10V～30V | 100mA | 200mA | ||
| 0～50V～100V～300V | 50mA | 100mA | ||
| 0～250V～500V～1000V | DC:20mA AC:40mA | DC:20mA AC:60mA | ||
| AC/DC Current | 0～100mA | DC:3V AC:36V | ||
| 0～1A | DC:3V AC:12V | |||
| 0～20A | 1.5V | |||
| Standard Resistor | 10, 24, 50, 100, 240, 500 (Ω), 1, 2.4, 5, 10, 24 (kΩ) plus × 1K, × 1X range (10kΩ ~ 24MΩ) | 0.25W | ±(0.3%+20mΩ) | |
Note: (1) When the working environment temperature exceeds 23℃ ±2℃, for every 10℃ change, the additional error is less than the basic error of this range. (2) 50A 1KHz Accuracy ±(0.15% of reading value + 0.05% of full scale) | ||||
6. Power Specifications: AC voltage 220V ±10%, frequency 50Hz ±1Hz
7. Working Environment: Temperature 5°C to 35°C, relative humidity <80%
8. Business Hours: Continuous
9. Dimensions: 180×480×480mm3
10. Weight: Approximately 16 kg
