Online Measurement for Citric Acid Solution S.G, C% TWD-CA-ONLINE

Flowing liquid online testing domain



Application: Citric acid concentration measurement in fine chemical industry, pharmaceuticals, cosmetics industry, pesticide, food and other industries.


Principle: Referring to the standards of GB/T611, T22230, T5009, ISO 758, 6353, by adopting the hydrostatics buoyancy method and hydrodynamics Bernoulli method to online monitor the specific gravity change of citric acid; then by using Lagrange polynomial interpolation, the online citric acid concentration can be converted. Then the quality control of citric acid crystal products can be achieved.
 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), Concentration (C%)
S.G precision
C% range
Standard interface
 Technical data:
1.When citric acid is in the process of crystallization, the main means to obtain high-quality products is to control the supersaturation degree of solution, more particularly in the pharmaceutical industry;
2. During the crystallization process of citric acid, if no concentration measurement, it will cause misoperation, then the defective products will be produced and low production process repeatability problem will occur.
3.At present, online measuring the concentration of thick suspension correctly is always the bottleneck in crystal industry, periodic off-line measurement is affected by a variety of environmental factors, and the measuring process is tedious.
1. The main-body is placed on the easy-operation platform, and it is equipped with sampling tank.
2.The liquid will get in and out through the in-out hole of sampling tank, the liquid specific gravity can be showed by buoyancy change of sensor ball in sampling tank.
3.By processing continuous action, the quality control of citric acid crystal products can be achieved by according to the specific gravity change of citric acid.
4.Just by continuous actions, the online specific gravity measurement and monitor of citric acid can be finished. The dynamic data of online citric acid concentration can be converted.