DO3020W Multimeter Calibration Device、Multi-use meter calibrator、Multi-functional Calibration Instrument、Three-table Calibrator
Overview:
     DO3020W Universal Meter Calibration DeviceIt's a newly launched high-tech product, primarily used forAC/DC VoltageTablesAC and DC currentTesting and calibration of meters, ohmmeters, and multimeters. It utilizes digital feedback control technology and a large-screen LCD display, combined with Windows-based technology to design the screen menu management function. The entire machine is technologically advanced, feature-rich, compact in structure, and reliable in performance, widely used as standard equipment in power, railway, metrology, industrial and mining enterprises, and scientific research institutions. It can also be used as a stableAC/DC VoltageOriginal, stableAC and DC CurrentSource usage.
Key Features:
1. Multi-functional, high accuracy, and high powerAC/DC Voltage、AC and DC Current、ResistorWith square wave frequency output, widely applicable for calibration of analog indicators and digital instruments.
2. Output voltage and current are all soft-start, set the output value with digital keys, and adjust the output value bit by bit using a rotary encoder for continuous stepping. It also features full-scale and zeroing functions for convenient use.
3、AC/DC Voltage、AC/DC CurrentSix-digit output adjustment for square wave frequency, with fine adjustment precisionRange10-6
4. Features overcurrent and overvoltage automatic protection with automatic reset function.
5. 320×240 LCD large screen display, Chinese menu, function input prompts, capable of simultaneously displaying output status, output value, relative error, and error with corresponding information.Range。
6. Features external calibration for maintaining accuracy after calibration.
7. Equipped with an RS232 interface, it can be connected to a computer to form an automatic testing system (optional), capable of performing calibration data processing, certificate printing, and archive management among various administrative tasks.
Key Technical Specifications:
1. OutputAC/DC VoltageRange: 10mV-1000V, divided into 10 levels: 1000V, 600V, 300V, 100V, 30V, 10V, 3V, 1.5V, 200mV, 75mVRange。
2. Output DC Current Range: 2μA-22A, divided into 10 levels: 20A, 5A, 2A, 500mA, 200mA, 50mA, 10mA, 2mA, 200μA, and 20μARange。
3. Output current range: 2mA - 22A, divided into 20A, 5A, 2A, 500mA, 200mA, 50mA, 10mA, totaling seven levelsRange。
4. OutputAC/DC VoltageCurrent regulation range: better than fullRange1 x 10^-5, eachRangeAdjustable between 10-110% (1000V)RangeAdjustable range of 10-100%），with individual digits that can be adjusted step by step.
5. Output frequency range for voltage and current: 40Hz-65Hz, 400Hz single frequency, and 50Hz power frequency synchronization; frequency adjustment fineness of 40Hz-65Hz is 0.001Hz.
6. Output DC Voltage Accuracy: 1000V ± 1.5VRange±0.05% RG, 200mV, 75mVRange±0.1% RG ±0.5 mV
7. Output voltage accuracy: 1000V-1.5VRange±0.05% RG, 200mV, 75mVRange±0.2% RG ±2 mV
8. Output DC Current Accuracy: 20A-2mARange±0.05% RG, 200μA, 20μARange±0.1% RG ±0.5μA
9. Output current accuracy: 20A-10mARange±0.05% RG
10. Communication Frequency Accuracy: ±0.05%.
11. AC voltage and current frequency deviation affect, accuracy additional 0.03% RG, 400Hz accuracy additional 0.1% RG.
12. Output distortion less than 3%.
13. Output DC ripple less than 3%.
14. OutputResistorResistance: 10Ω, 25Ω, 50Ω, 100Ω, 150Ω, 200Ω, 250Ω, 500Ω, 1K, 1.5K, 2K, 2.5K, 5K, 10K, 15K, 20K, 25K, 50K, 100K, 150K, 200K, 250K, 500K, 1M, 1.5M, 2M, 2.5M, 5M, 10M. Accuracy: ±0.05% ±200mΩ, Rated Power: 0.5W.
15、AC/DC VoltageRated Output Power: 1000V-30VRangeFor 20W, 10V, 3V, 2VRangePeak output current is 100mA. For 200mV and 75mV peak output, the current is 20mA.
16、AC/DC CurrentRated Output Power: 20A-2ARangeFor 20W, othersRangePeak output voltage is 10V.
17. Power supply: 220V (±10%), frequency: 50Hz (±10%), peak power consumption: 120VA.
18. Operating Conditions: Temperature 20±5°C, relative humidity 80%, no direct sunlight, no electromagnetic interference.
Software Description (Optional):
1. Through the RS232 interface, the computer can fully control the multifunctional computer's display with an indicator simulator, allowing adjustment of the indicator's functions and output by clicking the mouse or using shortcut keys.
2. Enter (or select from the menu) to choose the inspection form name and number, accuracy level, manufacturer, and submitting unit.RangeBasic parameters such as graduation values and the number of inspection points.
3. Based on the aforementioned data, semi-automatic calibration can be performed to automatically locate, ascend, descend, and adjust variations in parameters. The calibration results are automatically stored, forming original calibration data records.
4. Automatically process data, calculate errors, and make adjustments, then determine the instrument's qualification based on input grades. Issue a calibration certificate for qualified instruments (issue a test result notice for instruments without calibration procedures), and a calibration result notice for不合格instruments.
5. Automatically archive the aforementioned certificates and print them at any time.
6. Certified instruments can be categorized and statistically summarized, forming monthly and annual reports.

DO30B-2 Multi-functional Calibration Instrument

I. Application, Features:
The DO30B-2 Multi-functional Calibration Instrument is suitable for verifying various current and voltage meters below 0.2 class. It can also serve as a high-stability test power supply, used in conjunction with high-grade standard meters to calibrate current and voltage meters above 0.2 class.
II. Main Functions:
1. 5 1/2-digit LED digital display for output quantity, available in both actual value and percentage modes.
2. DC and AC current output range: 0~100uA~500uA~2mA~5mA~20mA~50mA~200mA~500mA~2A~5A~20A.
3. AC and DC voltage output range: 0 to 200mV to 1V to 2V to 5V to 10V to 20V to 50V to 100V to 200V to 500V to 1000V.
4. Available frequencies for selection: 50Hz, 60Hz, 400Hz
5. Overload protection with automatic shutdown and manual reset.
6. Each voltage and current rating can withstand a 20% overload.
7. Clamp Meter Measurement: Equipped with our factory-standard coil, capable of measuring AC 0~750A (some models can measure up to over 1000A); DC 0~1000A with an error of ±0.3%.
Appendix:

III. Technical Performance:
1. Stability: DC < fullRange0.01% per 2 minutes, AC < fullRange0.03%/2 minutes
2. Communication Distortion: <0.5%
3. Direct Current Ripple Factor: <0.1%
4. Output Frequency and Accuracy: 50Hz/60Hz/400Hz < 1%
5. Output voltage, current range, and accuracy (at 23℃±2℃, output values greater than 10%)Range）
6. Power Consumption: AC voltage 220V ± 10%, frequency 50Hz ± 1Hz; power consumption < 180VA
7. Working Environment: Temperature 5°C to 35°C, relative humidity not exceeding 80%
8. Working Hours: Continuous
9. Outside Dimensions: 135×480×420mm³
Weight: Approximately 16kg

7. Windows operating interface.