Overview
The MEY105 Electrical Measurement Standard Source (hereinafter referred to as the standard source) is an AC/DC standard voltage and current generator featuring a six-digit LCD display for output values. It is suitable for calibrating, verifying, and measuring digital and analog multimeter probes, as well as various voltage and current meters below Class 0.2. An integrated standard resistor set facilitates resistance meter calibration.
The Standard Source employs a novel composite high-power amplifier, delivering high output power, exceptional reliability, and minimal distortion. The optimized 16-bit A/D conversion chip significantly enhances conversion speed and precision. True RMS conversion chips for AC/DC ensure accurate AC output with superior linearity. The display simultaneously shows actual output value, percentage, and frequency. Output adjustment can be performed either by “step-by-step” or “percentage” methods. The entire unit employs a “closed-loop control” circuit design, greatly enhancing output stability. It also features automatic overvoltage and overcurrent protection.
This standard source provides 22 AC/DC voltage output levels (0~1000V); 22 AC/DC current output levels (0~30A); 11×2 mid-range resistor settings (10Ω~20MΩ); AC frequency: 50Hz, 60Hz, 400Hz (digitally synthesized, key-selectable). All parameters and ranges are switched via precision switches. Features digital display, wide range, fine-graded settings, high accuracy, excellent stability, and user-friendly operation. Widely used in instrument manufacturing, maintenance, and metrological verification.
1. Automatic protection against voltage short circuits and current open circuits
2. AC and DC current output up to 6A
3. Automatic overload protection with manual reset for enhanced reliability
4. Output adjustment available in “per-bit” or “percentage” modes
5. Output adjustment via external control encoder or front-panel digital control
6. Entire unit employs closed-loop control circuit design for high output accuracy and stability
1:
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Output items |
Output range |
Rated output |
Maximum output |
Accuracy (20 ºC ±2 ºC) |
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pay straight flow electricity Pressure |
0~200 mV |
20mA |
100mA |
Basic error: DCV: ±(0.05% of reading + 0.02% of full scale) DCI: ±(0.05% of reading + 0.02% of full scale) ACV: ±(0.05 % of reading + 0.02% of full scale) ACI: ± (0.05 % of reading + 0.02% of full scale) Additional error at 400Hz: ±0.05% of reading Additional voltage error: ±0.02mV ACI < 1mA is not assessed. |
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0~1V~2V |
50mA |
100 mA |
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0~5V~10V~20V |
100mA |
200mA |
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0~30V~100V~200V |
50mA |
100mA |
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0~300V ~600V~1000V |
20mA |
40mA |
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pay straight flow electricity flow |
0~100uA~500uA~2mA ~5mA~20mA~50mA ~200 mA~500 mA |
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DC: 3V AC: 12V |
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0~2A~5A |
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DC: 3V AC: 12V |
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0~30A (20uA, 200uA, 2mA, 20mA, 200mA, 1A, 2A, 5A, 20A, 30A) |
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1.5V |
±(0.05% of reading + 0.02% of range) |
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Standard allow electricity Obstruction |
Indicated value |
power |
accuracy |
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10 Ω , 20 Ω , 50 Ω , 100 Ω , 200 Ω , 500 Ω , 1k Ω , 2k Ω , 5k Ω , 10k Ω , 20kΩ , 50kΩ , 100kΩ , 200kΩ , 500k Ω , 1M Ω , 2M Ω , 5M Ω , 10MΩ , 20MΩ |
0.25W |
±(0.2%+20mΩ) |
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(1) For operating ambient temperatures exceeding 20℃±2℃, the additional error is less than the basic error for that range for every 10℃ change. (2) The error for 30A 400Hz is ±(0.15% of the reading + 0.05% of the range). (3) Output range: 0~120% RG (4) Output power: For voltage ranges below 30V, the output current is ≤0.2A ; for other ranges, the maximum is 25VA, and for current ranges of 200mA and below, the output voltage is 30V; for ranges of 1-30A, the maximum output is 30VA. |
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2: Stability: AC < 0.01%/1min of full scale; DC < 0.005%/5min of full scale.
3: Fineness adjustment: setting (0.002%)
4: AC distortion: <0.5%, 30A <2%
5: Output ripple content: <0.5%.
6: Output accuracy: <0.05%
7: External dimensions: 460×460×130 (mm)
8: Weight: Approximately 15 kg
We provide you with free consultation services
Engineers provide guidance for installation and commissioning
Technicians can provide on-site maintenance services and receive regular training
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