How to Read a Mechanical Gauge on a Car Air Pump?
2 Answers
Method for reading a mechanical gauge on a car air pump: Generally, there is a small screen on the car air pump, which can display the preset tire pressure and the real-time tire pressure during inflation. Some car air pumps use a needle gauge to display the air pressure, which can be read through the needle scale. Usage method of a car air pump: 1. Power supply: Most car air pumps draw power from the 12V cigarette lighter socket, but some can also draw power from the battery. 2. Connect the air nozzle: To prevent air leakage at the connection during inflation, the connection between the car air pump and the air nozzle is usually a threaded tightening type. 3. Set the inflation pressure: Set the desired tire pressure on the air pump's pressure setting panel. 4. Start inflation: After everything is ready, press the inflation start button, and the car air pump will begin inflating the tire. When the set tire pressure value is reached, the air pump will stop working automatically.
When I first started driving, I was always confused about how to read the mechanical gauge on a car tire inflator. It's actually quite simple: first, connect the pump to the tire valve, then turn on the power and observe the position of the rotating needle on the dial. Mechanical gauges usually have a scale marked with pressure values like PSI or bar. You need to check your car's recommended tire pressure (usually listed on a sticker by the door) in advance. Stop when the needle reaches the target pressure. If the needle jumps significantly, wait a few seconds and take the average for an accurate reading. Keep the dial clean to prevent dust from obscuring the scale. Remember to perform this operation when the tires are cold, as driving heats them up and can lead to falsely high readings. After a few practices, it becomes even more convenient and cost-effective than digital gauges.
