A Voltage Meter is a specialized instrument designed for precise measurement and digital display of voltage levels. Its operation is based on high-impedance input sampling and analog-to-digital conversion. The meter utilizes a voltage divider network to scale high input voltages to a measurable range, which is then conditioned through filtering and amplification circuits. A critical component is the Analog-to-Digital Converter (ADC), which transforms the processed analog signal into a digital value. This value is processed by a microcontroller and displayed numerically on an LCD or LED screen.
Product Features
1. High Accuracy and Resolution: Provides precise voltage readings with resolutions reaching millivolt levels, presented on a clear digital display that eliminates parallax errors found in analog meters.
2. High Input Impedance and Programmability: Features input impedance typically exceeding 1MΩ to minimize circuit loading. Supports programmable input ranges (e.g., 0-100V DC, 0-300V AC) and configurable display units.
3. Isolated Design and Easy Integration: Incorporates electrical isolation between measurement circuits and display/power supply, ensuring safety and noise immunity. Its compact, standardized dimensions facilitate seamless panel integration.
Common Applications
Voltage DPMs are essential across multiple sectors:
1. Power Supply Units: Real-time monitoring of output voltage stability
2. Industrial Control Panels: Measuring control voltages and process signals in automation systems
3. Test and Measurement Equipment: Serving as primary displays in multimeters, calibrators, and laboratory instruments
4. Renewable Energy Systems: Monitoring battery bank voltages and inverter outputs in solar/wind installations
