Dilute sulfuric acid concentration detection instrument

This post was last edited by liuqe001 on 2018-11-1 at 13:01. We have a concentrator that uses the conductivity method; it isn’t very large in size, but its display unit requires a 220V power supply. If you need information, send a message within the site. Portable meters that use dry batteries are hard to find.

How effective is the concentration meter, and what is the degree of deviation from laboratory analysis?

When using the conductivity method to detect sulfuric acid concentration, the gauge program is set to mass percentage concentration. Theoretical accuracy is ±1%, with a resolution of 0.01%. In practical applications, considering that the conductivity of sulfuric acid has an inflection point across its entire concentration range, it is piecewise linear. Different curves need to be selected based on the measured range. The range for the original poster is 100 g/L, which corresponds to a percentage concentration of around 10%. An EC curve ranging from 0 to 37% can be selected, and this range exhibits good linearity.

http://www.dyjkjd.com/index.html CL200 series conductivity and pH meters, with DN50 flange-mounted insertion connection. The measuring element does not come into direct contact with the medium being measured, and there is no polarization effect; it is particularly suitable for measuring the concentration of highly corrosive media such as strong acids, strong bases, and salts. These instruments are widely used in power plants, the chemical industry, metallurgy, pharmaceuticals, food processing, and environmental protection sectors for continuous online monitoring of acid, alkali, and salt concentrations or conductivity, as well as in CIP processes for the food and beverage industry. IV. Main technical specifications
1. Measurement range
a) Concentration
Measurement media: Hydrochloric acid, Sulfuric acid, Nitric acid, Sodium hydroxide, Salt water
Concentration range (%): 0–5, 0–10, 25–40, 0–5, 0–25, 35–80, 94–99.5, 0–25, 35–50, 0–5, 0–10, 25–40, 0–4, 27–30
Note: This list is not exhaustive; for other media, drawing of conductivity curves can be provided to users at an additional charge. b) Conductivity: 0～50(mS/cm) ； 0–200 (mS/cm) ； 0–500 ； 0～1000(mS/cm) ； 　　c) Temperature: 0～150℃ ； 　　Instrument accuracy: Class 1.0 ； 　　Temperature compensation range: 0～150℃ ； 　　Temperature coefficient compensation range: 30 steps (0～9.99)%/℃ (adjustable) ； Concentration linearization: 30 segments ； 　　Maximum operating temperature of the measurement probe: 150℃ ； 　　Maximum operating pressure of the measuring probe: 10 MPa ； 　　The measurement probe is made of polymer material, which offers good corrosion resistance and is suitable for all acids, bases, and salts ； V. Operating Conditions of the Instrument Ambient temperature: 0～50℃ Relative humidity: ≤90% Power supply: DC24V ； Load capacity: 0–500Ω. Protection rating: IP68. Output: 2 channels of 4–20mA; concentration, conductivity, and temperature can be selected as needed, to supply measurement, indication, and process control for indicators, recorders, regulators, PLCs, DCS systems, etc.