PROBEST PUVCOD-900 UV254 Spectrometer Organic Sensor, Online COD BOD TOC Water Quality Probe
Product Description
PROBEST PUVCOD-900 is a UV254 spectrometer organic water sensor adopting ultraviolet absorption principle to detect soluble organic pollutants in water by SAC254 spectral absorption coefficient. It can convert real-time data
into COD, BOD and TOC values via KHP calibration. This immersion online water probe requires no chemical
reagents, delivers fast response, supports automatic cleaning and MODBUS RS485 communication, widely used for
sewage plant, industrial effluent, surface water and aquaculture wastewater continuous organic load monitoring.
The PROBEST PUVCOD-900 Spectrometer Organic Sensor is a reagent-free in-situ water quality monitoring probe
independently developed by PROBEST, designed for long-term continuous online measurement of organic
contamination in all types of water bodies. Based on 254nm UV light absorption characteristics of dissolved organic compounds, the sensor calculates SAC254 absorption coefficient and converts readings to COD, BOD and TOC concentration with standard KHP calibration, eliminating the need for sampling, chemical reagents and complicated pre-treatment procedures compared with traditional laboratory chemical analysis methods.
H1：PROBEST PUVCOD-900 UV254 Spectrometer Organic Sensor | Reagent-Free Online COD BOD TOC Water Probe
H2：1. Measurement Principle of PROBEST PUVCOD-900 Organic Sensor
H2：2. Core Product Features
H3：2.1 Direct Immersion Probe Design, No Sampling & Pretreatment
H3：2.2 Zero Chemical Reagents, Eco-Friendly No Secondary Pollution
H3：2.3 Fast Response Speed for Continuous Real-Time Measurement
H3：2.4 Built-in Automatic Cleaning Function, Low Maintenance Cost
H3：2.5 Industrial-Grade Durability & Stable Digital Communication
H2：3. Main Application Scenarios
Sewage treatment plant: Continuous organic load monitoring, real-time influent & effluent COD/BOD online supervision
Surface water monitoring: River, lake, reservoir organic matter long-term in-situ detection
Industrial wastewater discharge: Chemical, printing, food factory effluent TOC & COD continuous monitoring
Fishery & aquaculture wastewater: Breeding water organic contamination real-time tracking
Municipal environmental online monitoring stations, floating water quality buoys, drainage outlet automatic monitoring systems
H2：4. Complete Technical Specifications
| Parameter Item | Technical Data |
|---|---|
| Measuring Range (Calibrated by KHP) | COD: 0–1000mg/L (5mm light path); 0–90mg/L (50mm) BOD: 0–1500mg/L (2mm); 0–750mg/L (5mm); 0–60mg/L (50mm) TOC: 0–800mg/L (2mm); 0–400mg/L (5mm); 0–35mg/L (50mm) |
| Measurement Accuracy | ±5% (KHP Standard Solution) |
| Repeatability | ±2% (KHP Standard Solution) |
| Resolution | 0.01mg/L |
| Working Pressure | ≤0.4Mpa |
| Sensor Housing Material | SUS316L (Fresh Water); Titanium Alloy (Ocean Seawater) |
| Cable Material | PUR Waterproof Cable |
| Communication Protocol | MODBUS RS485 |
| Storage Temperature | -15℃ ~ 50℃ |
| Measuring Temperature | 0℃ ~ 45℃ (Non-freezing environment) |
| Overall Dimension | Diameter 69mm × Length 365mm |
| Net Weight | 3.2KG |
| Protection Grade | IP68 / NEMA6P |
| Standard Cable Length | 10m, Max Extendable to 100m |
H2：5. Advantages Compared with Traditional COD Testing Equipment
No reagent consumption: Save procurement, transportation and waste liquid disposal cost of chemical reagents
On-site direct measurement: Avoid sampling error caused by manual sampling and transportation
24h unattended monitoring: Auto cleaning reduces manual maintenance frequency
Multi-index simultaneous output: One probe outputs COD, BOD, TOC three core organic indicators
Digital RS485 output: Easy to connect with SCADA, PLC, environmental monitoring cloud platform
Wide adaptability: Two housing materials for freshwater and marine seawater scenarios
High protection level IP68: Stable operation under long-term underwater immersion
H2：6. Frequently Asked Questions (FAQ)
Q1: What is the measurement principle of PROBEST PUVCOD-900 organic sensor?
Q2: Can this UV COD probe work in seawater environment?
Q3: Does the PUVCOD-900 need regular manual cleaning?
Q4: What communication mode does the sensor support?
Q5: What water bodies is this spectrometer organic sensor suitable for?
Sewage plant inlet/outlet, industrial effluent, river surface water, lake reservoir, fishery aquaculture wastewater and other water quality online monitoring projects.