DO30-JDigitalTriple-use meter calibration instrument、DO30-JTypeMulti-functional Calibration Instrument、DO30-J Universal Multimeter Calibration Device
Section 1:DO30-JUsage, Features:
DO30-JDigitalTriple-purpose meter calibratorIt is an intelligent AC and DC standard voltage and current calibration instrument (with AC output displaying true RMS value). The instrument features three display windows, capable of simultaneously displaying the actual output value, percentage, and the full-scale value of the tested meter. The output of the instrument can be set based on the full-scale value of the tested meter.RangeAnd the step size can be selected according to the scale of the inspected gauge. The output adjustment can be chosen.Keyboard(Keypad) control or potentiometer control. Features digital display, error direct reading,RangeWide range, fine gradation, high precision, good stability, easy to use, and more. Suitable for calibrating, inspecting, and repairing four-and-a-half-digit multi-meters, various 0.2 and 0.5 class below analog AC/DC voltage and current meters; also can be used as a high-stability test power supply, paired with high-grade standard meters, for calibration of 0.1 class current and voltage meters.
Section Two:DO30-JPrimary Functions:
1 、 5 1/2The LED digital display features dual output modes, showing both the actual value and percentage simultaneously.
2. UtilizeKeyboardControl the increase and decrease of output volume.KeyboardControl levels are 100%/N, 10%/N, 1%/N, 0.1%/N (with N being 4, 5, 6, 10, 15).
3 、External Control RegulatorThe controller allows for off-line adjustment of output quantity increments.KeyboardTwo configurations available, switchable at will.
4. The DC and AC voltage output range is 0 to 1050V.
5. DC and AC current output range: 0 to 20A.
6. Offers four output frequencies: 50Hz, 60Hz (59.7Hz), 400Hz, 1000Hz, for useCrystal OscillatorEnsure accuracy and stability of the 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 beat frequency on the meter being tested.
9. Clamp Meter Measurement: Equipped with our factory-standard coil, capable of measuring 0-1000A current with an accuracy of ±0.3%.
IV. 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, <0.1% (or synchronized with mains power)
5. Output voltage and currentMedian ResistanceScope and accuracy are as shown in (Appendix 1) (23℃±2℃, output value greater than 10%)Range）
Appendix Table (1)
| Export Items | Output Range | Rated Output | Peak Output | Accuracy |
| AC/DC Voltage | 0～300mV | 20mA | 100mA | Basic Tolerance: |
| 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 | ||
| Direct 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 to 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 16kg
