Product Details
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.
Company Profile
Xi'an Desun Uniwill Electronic Technology Co., Ltd.is located in
Xi'an High-tech Development Zone. It is a high-tech company
integrating production, research and development, sales and
engineering services. Relying on Xi'an's rich high-tech resources,
we carry out technical cooperation with many universities and
scientific research institutions, constantly break through
technical barriers, improve product performance, and provide
high-quality products for the water quality monitoring industry
with leading technology. We have launched a wireless water quality
monitoring solution based on the current rapidly developing
Internet of Things technology, which combines smart terminals and
traditional display units through wireless transmission to realize
real-time and dynamic water quality monitoring functions such as
data cloud display, remote cloud control, and upper and lower limit
alarms.

Desun Uniwill Electronics has won unanimous praise from domestic
and foreign customers for its high-quality and sincere professional
pre-sale, in-sale and after-sale services. On the basis of
continuous optimization of innovative products, we will strictly
control quality, strictly abide by industry standards, and work
with partners to protect green mountains, green waters, and blue
sky with high-quality products.
