EIT LiQlyzer Residual Chlorine Online Meter
Choosing a Free Chlorine Analyzer
A chlorine sensor is made to detect how much chlorine is present in a solution.
When chlorine is dissolved in water, it can take on a variety of forms, including hypochlorous acid and chlorite. This is known as free chlorine, and when it is calculated as a percentage of chlorine demand, it produces residual chlorine. According to the Chlorine section, the pH of the measured solution has a significant impact on the ratio of hypochlorous acid to chlorite.Colorimetric VS Amperometric
Amperometric
Every amperometric chlorine sensor uses this electrochemical process to measure chlorine.HOCl + H+ + 2e– à Cl- + H2O
At the cathode, hypochlorous acid is reduced to chloride, which releases electrons. The sensor measures this electron flux.There are two main styles: Membrane and Bare
Bare type
The three-electrode amperometric measurement method is employed in bare electrode systems. By adjusting for solution resistance, a potentiostat applies voltage between two electrodes. The measured current and chlorine concentration are inversely related.Membrane type
The two-electrode approach is employed in a Membrane Style system. The Counter Electrodes and the Reference Electrode are united and kept apart from the solution by a membrane, otherwise it is virtually identical to the three-electrode approach. Electrolyte gradually diffuses into the solution and needs to be frequently replaced.Colorimetric type
Chemicals applied to the sample react with chlorine in the colorimetric method to produce a colour. The amount of chlorine has a clear relation to how dark the colour is. These tools are referred to as Online DPD Instruments (DPD). A reading of the ppm chlorine is obtained by measuring the colour. LQCL-T40AC |
 LQCL-T60AC |
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| Range: 0-20mg/L ; 0-100mg/L | ||
| Communication: 4-20mA RS485 ModbusRTU | ||
| Working Condition: 0-60¡ÆC | ||
| Power Supply: 240VAC | ||
| Installation: Panel/ Wall mounted/ Pipeline | ||
| Model | LQCL-T40AC | LQCL-T60AC |
| Accuracy | ¡¾3%FS | ¡¾1%FS |
| Relay control contacts | 3A 250VAC, 3A 30VDC | 5A 240VAC, 5A 28VDC, 120VAC |
| Protection | IP54 | IP65 |
| Dimension | 96*96*135(mm) | 144*144*107(mm) |
| Hole Size | 92.5*92.5(mm) | 138*138(mm) |
| Other Functions | - | Data record &Curve display |
