Current Meter, Ammeter with Hall Sensor, LED Digital Display, 50A High-Precision Current Gauge for Vehicles

Specification: Item Type: Digital Ammeter Material: ABS Current Range: 50A Test Range (V): -/-0.0-50A, Resolution (A): 0.1A Supply Voltage: 4-30V (wide range) Note: The maximum input voltage cannot exceed 30V, otherwise there is a risk of combustion Display Mode: 0.52 inch LED, red External Dimension: Approx. 54x30x21mm/2.13x1.18x0.83 inches Installation Opening: Approx. 47.2x27.3mm/1.86 x 1.07in Measurement Rate: ≥ 500ms/Time Measurement Accuracy: 1% (± 2 ms) Power End Lead: Approx. 150mm / 5.91in Lead Transformer: Approx. 150mm / 5.91in Minimum Supply Voltage: -4.0V Maximum Supply Voltage: -30V Operating Temperature: -10 to -65℃ Operating Humidity: 10 to 80% (non-condensing) Working Pressure: 80-106kPa Exposure: Direct exposure is not permitted. Calibration Method: The relative error between the instrument and the calibration device, or the error caused by component aging or changes in environmental temperature after long-term use, can be calibrated using the following methods. For more accurate measurements, it is recommended to preheat for more than 5 minutes before calibration. Current calibration: Assuming there is no current, use a slotted screwdriver to adjust the zero potentiometer behind the mutual inductor until the ammeter's decimal point flashes rapidly as the best point; a steady light or no light indicates a positive zero point, and a slow flash indicates a negative zero point. Then, with a load of half the actual current to be measured, adjust the amplitude modulation potentiometer on the transformer side until it