The dissolved oxygen online sensor uses the fluorescence method to detect dissolved oxygen in water. It features a built-in temperature sensor for automatic temperature compensation. Manual compensation for atmospheric pressure and salinity is available, with one-button switching between national and industry standards. The sensor uses an RS485 interface and supports the standard Modbus protocol.
During the interaction between dissolved oxygen in water and fluorescent substances, both the fluorescence intensity decreases and the fluorescence lifetime shortens. This fluorescence quenching can be described by the Stern–Volmer equation:
Dónde:
| Modelo de producto | DO-200 | DO-210 | DO-230 |
| Working principle | Fluorescence method | Fluorescence method | Fluorescence method |
| Rango de medición | (0~20)mg/L &can be customized | (0~20)mg/L &can be customized | (0~20)mg/L &can be customized |
| repetibilidad | ±0.2mg/L | ±0.2mg/L | ±0.2mg/L |
| Precisión de la medición | ±0.2mg/L | ±0.2mg/L | ±0.2mg/L |
| Derrape (24h) | ±0.2mg/L | ±0.2mg/L | ±0.2mg/L |
| resolución | 0.01mg/L | 0.01mg/L | 0.01mg/L |
| Tiempo de respuesta | <1min | <1min | <1min |
| Nivel de protección | IP68 | IP68 | IP68 |
| Interfaz de comunicación | RS485, standard Modbus protocol baud rate 4800, 9600, 19200, 38400, 57600, 115200 | RS485, standard Modbus protocol baud rate 4800, 9600, 19200, 38400, 57600, 115200 | RS485, standard Modbus protocol baud rate 4800, 9600, 19200, 38400, 57600, 115200 |
| Dimensiones | (φ33*224)mm, cable de 10 metros (personalizable) | (φ12*115)mm, cable 10 meters (can be customized) | Φ12*220mm |
| Material | 316L stainless steel /PVC/ titanium alloy | Acero inoxidable 316L/aleación de titanio | Acero inoxidable 316L |
| peso | 0,5 kg | 0,1 kg | 0,1 kg |
| Roscas de montaje | Upper end NPT3/4 thread | / | VP8 fittings & PG13.5 threads |
| Tensión de funcionamiento | (9~36)V DC | (9~36)V DC | (9~36)V DC |
| Consumo de energía | 0.4 W | 0.4 W | 0.4 W |
| MTBF | ≥1440h/hora | ≥1440h/hora | Membrane cap high temperature sterilization 30pcs |
| Periodo de calibración | 6 ~ 12 months | 6 ~ 12 months | 6 ~ 12 months |
| Entorno de trabajo | (0~50) °C | (0~50) °C | 0~130℃ |
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Tim Li
Gerente de Marketing
Tim Li
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