The DS-ISA in-situ full-spectrum water quality online sonde utilizes the ultraviolet/visible light band (190-840nm) to simultaneously detect multiple parameter indicators in water. A single measurement result covers the absorption spectrum of the entire band. Compared with electrochemical sensors and multi-parameter measuring instruments, the DS-ISA is a more comprehensive measuring device. Through calibration, the DS-ISA can be applied to a wide variety of applications. In addition, the adjustable optical path length also enhances the measurement range, accuracy, resolution and other indicators of the DS-ISA, thus expanding its application range.
The DS-ISA has a significant improvement in preventing microbial growth and contamination through the special coating material of its optical element window. At the same time, combined with the self-cleaning wiper structure design for automatic cleaning, it ensures that it can work for a long time with minimal maintenance.
When the measuring probe is in operation, it needs to be immersed in water or the water needs to be pumped up and flow through the slit. When the light emitted by the light source in the probe passes through the slit, a single light source, dual optical path, and multi-wavelength measurement method is adopted, with compensation for multiple interference items such as temperature, turbidity, and chromaticity to improve the measurement accuracy.
Instrument Specifications
Model | DS-ISA in-situ full-spectrum online water quality sensor |
Measurement Principle | spectral analysis |
Light Path | 1 mm, 3 mm, 5 mm, 10 mm, 50 mm |
Turbidity Compensation | Yes |
Response Time | T90 < 10 seconds |
Dimensions | Diameter 68 mm * Length 487 mm |
Weight | 3.0 KG |
Main Materials | 316 Stainless steel or titanium alloy , o-ring: fluoro rubber + nitrile rubber, cable: PVC |
Waterproof Rating | IP68/NEMA6P |
Measurement Indicators | Organic substances: COD, BOD, TOC, DOC, nitrogenous substances: NO3-N, NO2-N, turbidity, temperature |
Data Output Format | RS 485 |
Power Supply | DC 12-24V |
Storage Temperature | -10°C to +50°C |
Operating Environment Temperature | -5°C to +50°C |
Pressure Range | < 50 bar |
Flow Range | 0.1-10 m/s |
Installation Method | Immersion or handheld |
Cable | 10m standard electrical cable, other lengths available |
Specifications:
Parameters | Measurement Range | Accuracy | Response Time | Resolution |
COD | 0-200mg/L | ±5% standard solution | T90<15s | 0.1mg/L |
TOC(Calculate parameters according to COD) | 0-80mg/L | ±5% standard solution | T90<15s | 0.1mg/L |
BOD（Calculate parameters according to COD） | 0-40mg/L | ±5% standard solution | T90<15s | 0.1mg/L |
Turbidity | 0-500NTU | take the larger value of 0.5 NTU or ±5% standard solution | T90<15s | 0.1mg/L |
NO3-N | 0-5mg/L | ±5% standard solution | T90<15s | 0.1mg/L |
Specifications:
Parameters | Units
| Optical Length | |||||
1mm | 2mm | 5mm | 10mm | 20mm | 50mm | ||
SAC254(Abs/m) | 1/m | 15-2300 | 7.5-1150 | 3-450 | 1.5-225 | 0.75-115 | 0.3-44 |
CODeq | mg/L | 52-8000 | 25-4000 | 15-1500 | 1-300 | 0.5-100 | 0-50 |
BODeq | mg/L | 52-8000 | 25-4000 | 15-1500 | 1-300 | 0.5-100 | 0-50 |
TOCeq | mg/L | 20-3200 | 10-1600 | 6-600 | 0.4-120 | 0.2-40 | 0-20 |
DoCeq | mg/L | 20-3200 | 10-1600 | 6-600 | 0.4-120 | 0.2-40 | 0-20 |
NO3-N | mg/L | 0-400 | 0-200 | 0-80 | 0-40 | 0-20 | 0-10 |
NO2-N | mg/L | 0-400 | 0-200 | 0-80 | 0-40 | 0-20 | 0-10 |
Turbidity | NTU | 0-4000 | 0-3000 | 0-1000 | 0-1000 | 0-400 | 0-200 |
Temperature | ℃ | -10℃-55℃ | |||||
