Surely every person in his life came across such a device as a voltmeter, and knows what its main function is. This is the definition of the voltage value of an electrical circuit. An analog voltmeter is a device with an arrow pointer and a scale. Recently, digital voltmeters have gained particular popularity; they are characterized by more accurate readings and compact dimensions. In this article, we will talk about a special model of a measuring device, such as automobile
th voltmeter. It can be made as a simple voltmeter and combined. The combined automobile voltmeter contains additional functions, such as a tachometer, thermometer, etc. Let us consider such a device in more detail.
The car voltmeter has small overall dimensions, so it can be installed anywhere in the car. Quite often, such a device is combined with a cigarette lighter plug. If necessary, you can insert the device into the cigarette lighter and use it to monitor the battery charge in various operating modes. So, the normal battery voltage with the engine “off” is 12.5 volts, and when it is wound up it is 13.5-14.5 volts. If the voltage exceeds, or, conversely, is below normal, then you need to check the electrical system of the car. A car voltmeter is simply indispensable for fans of listening to music, especially at a picnic or nature. It allows you to monitor the battery charge and prevent the discharge below normal. Many motorists know that focusing on the signals of regular car alarms
Battery discharge discharges are undesirable, as they usually signal when the battery, generator or relay-generator fail, and it is too late to take any measures. An automobile
digital voltmeter allows you to notice changes in the electrical system of the machine in time. There are options for connecting remote displays, so the driver will always see the readings of the device.
Now we will consider the combined devices. A car tachometer-voltmeter can be installed anywhere in the car, and, if necessary, under the hood. This device allows you to display not only the voltage of the onboard network
, but also the air temperature in the car interior and on the street, as well as the temperature of the car engine, and, of course, the number of engine revolutions. Such devices can be used not only in cars, but also at home to indicate the temperature indoors and outdoors. Included with a car tachometer-voltmeter are
temperature sensors. In thermometer mode, sensors are capable of measuring temperature in a given range from -50 to +127 degrees Celsius. Connecting the specified sensor can be done independently, or you can trust the auto electrician.
Here we have a brief look at what a car voltmeter and a combined instrument are. Knowledge of how to use these devices will be useful to every car owner.