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Model：
HD-YL202
Introduction：
Online Blue-green Algae Monitor measures blue-green algae in water online by the fluorescence method with an automatic cleaning brush. Widely used for rivers, lakes, reservoirs and drinking water sources to warn of algal blooms....
The HD-YL202 online blue-green algae analyzer adopts the fluorescence principle. Compared with the traditional manual counting method it is faster and more efficient and allows real-time online monitoring. The sensor offers excellent repeatability and stability. An automatic cleaning brush eliminates air bubbles and reduces the influence of fouling on the measurement, extending the maintenance interval so that excellent stability is maintained even during long-term online use. It can provide an early warning of algal blooms.
Monitoring, early warning and research of blue-green algae (cyanobacteria) in rivers, lakes, reservoirs, ponds, aquaculture water and drinking-water sources.
1. Digital sensor with RS-485 output and MODBUS support.
2. Automatic cleaning brush prevents fouling and removes air bubbles.
3. Direct measurement, simpler than the traditional manual counting method.
4. Continuous online monitoring for real-time control of water quality dynamics.
| Measuring principle | Fluorescence |
| Measuring range | 0–270,000 cells/mL |
| Detection limit | 300 cells/mL |
| Housing material | 316L stainless steel (titanium alloy optional) |
| Power supply | DC 5–12 V, current < 50 mA |
| Maximum depth | 10 m underwater |
| Dimensions | Φ45 × 175.8 mm |
| Sensor interface | RS-485, Modbus protocol |
| Protection class | IP68 |
| Operating temperature | 0–50 °C (non-freezing) |
| Mounting | Immersion type |
| Cable length | 10 m standard, customisable |
1. Automatic recognition, plug and play.
2. One 4–20 mA output and one RS485 digital output.
3. Relay control with user-settable alarm limits and period.
4. Industrial-grade standard with isolated output and strong anti-interference capability.
| Dimensions | 144 × 144 × 115 mm |
| Display | 77 × 53 mm |
| Weight | 0.8 kg |
| Operating temperature | 0–55 °C; avoid direct sunlight |
| Protection class | ABS housing, IP65 |
| Ambient humidity | ≤ 80 % |
| Power supply | 110 / 220 V AC |
| Transmission output | 1 isolated 4–20 mA output, 1 digital output, 2 relay outputs |
| Temperature / pressure compensation | Automatic |
| Installation | Wall or panel mounting (cut-out 138 × 138 mm) |
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