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Model：
HD-ZXCHL
Introduction：
Online Fluorescence Chlorophyll Analyzer measures chlorophyll-a concentration in water online by the fluorescence method with a fiber-optic sensor. Widely used for rivers, lakes, reservoirs and drinking water sources....
The wall-mounted water chlorophyll analyzer uses the fluorescence principle. According to the spectral absorption characteristics of chlorophyll a, a high-energy LED light source illuminates the water body and excites the chlorophyll a in it to emit fluorescence at a specific wavelength, so the chlorophyll a concentration in the water can be measured. The sensor uses a fibre-optic structure and offers excellent repeatability and stability with little sensitivity to ambient light. An automatic cleaning brush eliminates air bubbles and reduces the influence of fouling on the measurement, extending the maintenance interval.
1. LCD screen with a Chinese / English interface, making operation simple and convenient.
2. Good repeatability and high sensitivity; not affected by medium flow rate or pressure.
3. Imported TI chip and anti-interference circuit for higher precision and greater stability.
4. Photoelectrically isolated 4–20 mA current output and RS-485 / RS-232 communication interface.
5. Adjustable hysteresis (dead band) prevents the relay from switching too frequently.
6. Built-in watchdog; data retention after power failure exceeds 10 years.
7. Dual-relay upper and lower limit alarm output.
8. The sensor is temperature-compensated, which corrects the influence of temperature on the measured value.
9. Unique optical and electronic filtering technology using the fluorescence method; no electrolyte consumption.
10. Automatic cleaning brush removes particles, requiring no periodic maintenance.
11. Special functional requirements can be customised.
| Measuring range | 0–1,000 μg/L or 0–100 RFU |
| Resolution | 0.1 μg/L or 0.1 % RFU |
| Accuracy | ±2 % of calibration value |
| Measuring principle | Fluorescence |
| 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 |
| Installation | Immersion mounting |
| Electrode material | 316 stainless steel |
| Electrode dimensions | Φ28 × 161 mm |
| 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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