Multi-parameter water quality analyzer
The LINKSENS UV254 COD sensor is an optical-based absorption and transmittance with UV LED and PD technology sensor. The sensor measures the absorption at UV 254nm, blue, green, and red light.Simultaneously to compensate the SAC measurement for interferences from turbidity and color.
● 4 wavelength absorption measurement: UV and Vis for turbidity and color compensation.
● SAC measurement used to determine organic loading without reagents.
● Measurement directly in the process, no sample processing or reagent required.
● Fast response, minimum 10 second.
● Cold light source (UV LED) and rugged PD, long life time and low drift.
● Support leakage alarm
Note：
1，TOC and BOD are calculated from COD, SS and turbidity is from SAC of Vis and IR.
2，The relationship between COD BOC SAC and TOC(from Hach)
Measurement Method |
Absorption measurement at 254 nm, DIN 38402 C2, DIN 38404 |
Range |
20mm cuvette gap 0.1~100mg/L equiv. KHP(@25℃,<200NTU) |
Resolution |
0.1mg/L or 0.01mg/L COD |
Repeatability |
±5% FS equiv. KHP |
Operating temperature |
0~45℃ |
Storage Temperature |
-10~50℃ |
Clean system |
Auto wiper system(default) |
Warranty |
1 year |
Depth |
IP68, 10m Max |
Power |
DC 5-12V |
Output |
RS485 and Modbus protocol |
Materials |
SS316 and quartz glass |
Dimensions |
OD=22mm |
Flow rate |
< 3 m/s |
Response time |
Minimum 10s T90 |
Field life* |
Sensor 3 years or greater, wiper sub-system 1.5 years or greater |
| Recommended Calibration maintain Frequency* | Sensor 3 months, wiper sub-system inspection 6 months. |
Note:
*Field life and calibration frequency dependent on site conditions.
Note：
1, Unit: mm
2, Tolerance: ±0.5mm
