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

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.