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Model：
HD-YL660
Introduction：
Online Residual Chlorine Analyzer uses a constant-pressure three-electrode sensor to measure residual chlorine with no calibration and low maintenance. Widely used for drinking water, swimming pools and wastewater disinfection monitoring....
The constant-potential residual chlorine sensor has a three-electrode structure: CE (counter electrode), WE (working electrode) and RE (reference electrode). The reference electrode maintains a constant potential difference between the working electrode and the solution, making the measuring environment more stable and avoiding frequent calibration. The constant-potential residual chlorine analyzer requires no calibration and no maintenance and offers high accuracy, small size and low power consumption. The display instrument provides slope correction and zero-point correction, real-time display of the measured value, automatic temperature compensation and manual pH compensation, and converts the compensated electrode signal into a more accurate residual chlorine value.
1. LCD screen with a Chinese interface and Chinese menu, making operation simple and convenient.
2. Higher-precision ADC signal acquisition and anti-interference circuit for higher precision and greater stability.
3. Photoelectrically isolated 4–20 mA current output (optional).
4. RS-485 communication interface (optional).
5. Dual-relay upper and lower limit alarm output (optional).
6. The sensor is temperature-compensated, which corrects the influence of temperature on the measured value.
7. Special functional requirements can be customised.
| Measuring range | 0–20 mg/L |
| Resolution | 0.01 mg/L |
| Power supply | AC 220 V / DC 24 V, input power ≥ 5 W |
| Output | RS485, 4–20 mA, relay (optional), HART protocol (optional), NB / GPRS / LORA communication (optional) |
| Protection class | IP65 (controller) / IP68 (sensor) |
| Operating temperature | 0–60 °C (non-freezing) |
| Storage temperature | −10–60 °C |
| Maximum chlorine concentration | 20 mg/L; higher concentrations shorten the service life of the membrane cap |
| Installation | Top-mount / top flange / side-wall / pipe / immersion / flow-through |
| Controller dimensions | Wall-mounted, 156 × 150 × 85 mm |
| Cut-out size | Wall-mounted, 156 × 94 mm |
| Cable length | 10 m standard (extendable on request) |
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