Understand electrolyte density in its banks as density of the accumulator. For its measurement take the areometer and measure it directly in banks of the accumulator. If there is a need, add sulfuric acid or the concentrate which is on sale in autoshops after that repeat measurement. Also density of electrolyte can be measured by means of the voltmeter, depending on its EMF.
It is required to you
- areometer, digital voltmeter, charger.
Instruction
1. Determination of density of the accumulator you areometromvozmit the areometer and by means of rubber pear involve the amount of electrolyte necessary for carrying out measurements in its glass flask. This quantity has to allow a special float with the scale applied on it in the device (densimetra) to emerge in electrolyte. Determine electrolyte density by a scale.
2. Determination of density of the accumulator plotnomeromdlya it delay in the transparent plastic casing electrolyte by means of rubber pear. In the case there are several floats and determine electrolyte density by their emersion. It is possible to carry the insufficient accuracy and narrow measurement range to shortcomings of this device. As a rule, it is 1.19-1.31 g/cm³. Therefore at strongly discharged accumulator density of electrolyte cannot be measured.
3. Determination of density of the accumulator on its EDSS measure by the help of the sensitive digital voltmeter the electromotive force (EMF) of the battery. For this purpose attach contacts of the voltmeter to accumulator conclusions, observing polarity. Record EMF value in volts to the 100-th shares. Then divide the received EMF value into 6 and from result take away 0.84 (ρ = E/6-0.84). As a result receive density in g/cm³. This formula is fair at a temperature about 5 °C. Therefore if there is an opportunity, heat or cool the accumulator before its achievement, for example, having put it for some time in a cellar or the refrigerator adjusted under this temperature. If there is no such opportunity, from result take away 0.01 on each 15 °C of temperature increase, and add on each 15 °C of fall of temperature.