UV254 Professional Chemical Oxygen Demand Sensor ,12VDC Bod Cod Meter
COD Spectrometer COD/UV254 Professional Online COD Bod Analyzer Water COD Meter
UV254 sensor
Light path: 1mm/ 6mm
COD 2.5 to 1000 mg/l equiv. KHP
BOD 0~500mg/L TSS 0~1000mg/L
+5~45 °C;
IP68 protection level,
RS-485; MODBUS protocol
compatible 1 or 2 point user calibration
UV LED light source
Technical parameter
| Item | Parameters | |
| Model | Measuring range | Application field |
|
DS501(6 mm gap) |
COD 0.75 to 1000 mg/l equiv. KHP TSS 0 to 1000 mg/L BOD 0~300 mg / L
|
Tap water,Sewage treatment plant outlet, natural waters |
|
DS502(1mm gap) |
COD 2.5 to 2000 mg/l equiv. KHP TSS 0 to 1000 mg/L BOD 0~500 mg / L
|
Industrial process control,Raw water |
| Power supply | 12VDC +/-5% | |
| Output signal | RS485 / Modbus | |
| Accuracy | 0.01mg/L COD | |
| Calibration | 1 or 2 point calibration | |
Calibration (2-point calibration)
- Restore user calibration data to default, K=1, B=0 (see modbus documentationfor details).
- Place the sensor in pure water (distilled or deionized water) and verify that all light paths are submerged under water >2 cm without bubbles.
Note: Do not use tap water. The COD value is then read, for example COD = 0.2 mg/L, recorded as X.
- Place the sensor in a 150mg/L COD solution and repeat step 3.2 to record the value as Y.
- Record the K and B values as follows:
- K=150/(YX), B= - KX
- Write the K, B values to the sensor.
WARNING: KHP is a cancer risk and should be worn with gloves.
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