Load forks and testers
Load fork, buy you can on this page is used to control the operation of the vehicle's battery. This measuring device shows the current charge level of the battery. Used for 12-bit or 24-volt batteries. Using them is easy enough, and the difference models apply only to the appearance and advanced features that affect the price of the device. The internal construction of the device is about the same. P>
Description instrument design h2>
In the device may be an electronic display or an arrow, different conductive fasteners, etc., But it has no effect on the internal content. Each load fork to check the battery consists of the following components: p>
- voltmeter; li>
- spiral-resistor; li>
- two probes; li>
- a casing enclosing the spiral. Li>
In addition, construction of the device may be complicated by the presence of the ammeter and the ability to check the status of the whole supply system. The device creates a strain on the starter 100-200 Amps. Received voltage should prosest and then recover. This allows you to simulate the starting load on the battery, and show it to the state of & nbsp;. P>
The basic rules of & nbsp; h2>
The use of the device does not provide for anything complex. However, there are some rules that should know and follow. Wires are attached positive to positive, negative to negative. Measurement is best carried out at temperatures from +20 to +25 degrees Celsius - it will provide the most accurate data. Do not check the battery cold - it can greatly discharge p>.
During the measurement, be careful with contact probes of the device - they are very hot. Length measurement should not exceed 6-8 seconds (just as the battery operation time required for starting the engine). Then need to wait 5 minutes break before spending froze again. If the findings suggest a full battery discharge - charge the battery and repeat the measurements p>.
The algorithm of the measurement h2>
This type of measurement most accurately reflects the state of the car battery. That is why buy a load fork and periodically check the possibility of the starter is worth every car owner. It is especially important to check the battery in the case of buying b / a Car or a problem with the battery. Thus there are two methods of verification: with and without load & nbsp; p>.
The first method involves the following steps: p>
1) to disconnect the battery from the car; p>
2) connect the device to the battery terminals (positive to positive, negative to negative); p>
3) issued a voltmeter memorize data. P>
On a full charge show figures from 12.6 to 12.9 V. The lower figures (up to 12.3) talk about the charge by 75% to 12.1 - 50% to 11 , 8 - 25% and up to 11.5 - zero charge. These data relate to a working battery. Tested in this case is carried out exclusively via at least 7 hours after the last engine operation. The battery in this case, too, does not work. P>
The second method of testing is used less often as dangerous to the battery. It allowed its use only in the case where no load check issued 100% charge. In this case, use a load that specified in the instructions. The battery is fully disconnected from the automotive electrical system & nbsp;. P>
In this case, give the power for 5 seconds and unplug the appliance. Full charge will give a number from 10.2 V 75% - 9.6 V 50% - 9 25% - 8.4 V. In terms below 7.8 B - battery is fully discharged. If spend repeated measurement under load after the battery voltage and thus prosyadet - battery unusable. Modern instruments can also show whether the battery unclosed cans. P>& nbsp; div>