Online Measurement for Electrolyte S.G, Bé, C% TWD-EL-OLINE

Flowing liquid online testing domain



Application: Solution monitoring in chemical battery factory, electrolytic polishing factories and electrolytic degreasing factories.


Principle: Referring to the standard of GB/T611, T2423, ISO 6353, and by adopting hydrostatics buoyancy method, Bernoulli principle of hydrodynamics to online monitor the specific gravity change of electrolyte, and then by applying Lagrange polynomial interpolation, the dynamic data of online electrolyte concentration can be converted, and then the charging degree of lead-acid battery can be determined.
 Buffering device: TP-30
With the special design of buffering device TP-30, it is fully consistent with the hydrostatic principle; the data tested will be more accurate.


S.G range
0.0001 – 2.0000(glass weight)
Testing type  
Specific Gravity (S.G), Baume (Bé), Concentration (C%)
S.G precision
Bé range
0.1~80.0 Bé
C% range
Standard Interface


Technical data:
A.Electrolyte is made from a certain percentage of special sulfuric acid and distilled water, generally, the standard density is from 1.24 to 1.30 g/cm3; specific gravity is from 1.275 to 1.285.
B.Rechargeable battery is applied completely according to the electrochemical positive and negative ion exchange principle, and the exchange medium of positive and negative ion is electrolyte. And the stability of the electrolyte specific gravity and concentration is the key for rechargeable battery.
C.In the electrolytic polishing process, in addition to the constant consumption of phosphoric acid and sulfuric acid, the water will lose because of evaporation and electrolysis. High concentration polishing solution will lose because of workpiece entrainment, and the specific gravity of polishing solution will change, so the new polishing solution and water needs to be added regularly.
D.Sodium hydroxide is a strong electrolyte, if the concentration of electrolytic degreasing solution is higher, then the conducting will be stronger, the current density will be higher, and the degreasing will be faster.
1.The main-body of this device is placed on the easy-operation platform, and the main-body is equipped with sampling tank.
2.The testing liquid is in and out from the in-out hole on sampling tank, the liquid specific gravity will be showed automatically by according to the buoyancy changing of sensor ball in sampling tank.
3.Just by continuous actions, the charging degree of lead-acid battery can be determined according to the specific gravity change of the electrolyte.
4.Just by continuous actions, the online electrolyte specific gravity measurement and monitor can be finished, and then the dynamic data of online electrolyte concentration can be converted and showed.