Voltagesensorområde

Voltagesensorområde, or voltage sensor range, is the span of voltage that a sensor can measure and report with useful accuracy. It is defined by the sensor’s input circuit, signal conditioning, and protection features that limit the maximum and minimum voltages that can be applied without damage or significant error. The range is typically specified as a minimum and maximum voltage along with the expected accuracy within that span.

In many systems the sensor output is scaled to a standard reference, such as an ADC input of a microcontroller. For example, a sensor may accept 0 to 60 volts and scale it to 0 to 5 volts; the voltagesensorområde would be 0–60 V, while the usable conversion range is 0–5 V at the ADC. The scaling determines the effective measurement range that can be realized by the controller, subject to isolation and protection limits.

Other factors include resolution (the smallest detectable voltage step), accuracy (deviation from the true voltage), linearity, temperature drift, and response time. The range can be broadened with multiple stages such as instrumentation amplifiers or isolation barriers, but each stage introduces potential errors and may limit bandwidth.

Common sensor types include resistor dividers for DC voltages, opto-isolated or Hall-effect sensors for higher voltages, and dedicated voltage sensor ICs. Specifications to check are the input range, isolation voltage, input impedance, and maximum common-mode voltage.

Choosing an appropriate voltagesensorområde requires considering the expected voltage levels, safety, required accuracy, and the processing hardware available. Calibration against a known reference is recommended to verify the stated range and accuracy.