Water body and objective
State black-odorous water grading, municipal river or lake, aquaculture or landscape water and the transparency change to be observed.
SD · Online optical measurement
Select online transparency measurement by water body, range and fouling conditions
PDS-300 uses combined infrared absorption and scattering for continuous water-transparency measurement across 2–100 cm in landscape water, lakes, reservoirs and aquaculture.
2–100 cmmeasuring range
±0.3 cm / 5%accuracy, whichever is greater
≤0.4 MPapressure rating
≤2.5 m/smaximum velocity
01 · Start with the water body
Evaluate transparency, solids, color and installation together
PDS-300 combines infrared absorption and scattered-light photometry. Suspended particles, color, bubbles, fouling and installation location in black-odorous water, rivers, aquaculture and landscape water all affect selection and maintenance planning.
Range and interference
Provide minimum, normal and maximum transparency plus suspended solids, color, bubbles and fouling conditions.
Hydraulics and mounting
Confirm velocity, pressure, immersion location, mounting, automatic-cleaning need and maintenance access.
Interfaces and delivery
Confirm cable, 4–20 mA, relays, RS485, power, quantity and project destination.
02 · Product model
PDS-300 online transparency analyzer
Configured with a black FUNEL single-parameter transmitter and Ø60 × 254 mm optical probe, with 4–20 mA, relays and Modbus RS485.
Infrared transparency analyzerPDS-300Online Transparency Analyzer
A self-cleaning optical sensor for continuous water-transparency measurement. It combines infrared absorption and scattered-light photometry for black-odorous water grading and surface-water projects.
2–100 cm±0.3 cm or 5%IP68 / NEMA6P
03
Product technical specifications
Before quotation, provide the water body, monitoring objective, expected minimum and maximum transparency, suspended solids and color conditions, flow velocity, pressure, mounting, cleaning, cable, power, outputs and destination.
- Measurement principle
- Combined infrared absorption and scattered-light photometry
- Measurement range
- 2–100 cm
- Accuracy
- ±0.3 cm or 5% of reading, whichever is greater
- Pressure rating
- ≤0.4 MPa
- Maximum flow velocity
- ≤2.5 m/s (8.2 ft/s)
- Power supply
- 85–500 VAC; 9–36 VDC
- Analog output
- 3 × 4–20 mA
- Relays
- 3 configurable relays
- Digital communication
- Modbus RS485
- Storage temperature
- -15–50°C
- Operating temperature
- 0–45°C, non-freezing
- Sensor dimensions
- Ø60 × 254 mm
- Transmitter dimensions
- 145 × 125 × 162 mm
- Sensor weight
- 1.65 kg
- Transmitter weight
- 1.35 kg
- Sensor protection
- IP68 / NEMA6P
- Transmitter protection
- IP66 / NEMA4X
- Cable
- 10 m standard; extendable to 100 m
04 · Operating applications
Typical transparency monitoring applications
For continuous transparency measurement in landscape water, lakes, reservoirs, urban rivers and aquaculture water.
Black-odorous water grading
Continuously track transparency as an important grading indicator for black-odorous water bodies.
Municipal rivers and lakes
Monitor transparency changes in urban inland rivers, lakes and restoration projects.
Aquaculture
Observe water-clarity trends in ponds and managed aquaculture water.
Landscape water
Add continuous transparency measurement to managed landscape-water systems.
05 · Common questions
Confirm this information before an inquiry
Does PDS-300 measure NTU?+
No. The documented result is water transparency in centimeters over a 2–100 cm range. It is not a PTU or PLTU turbidity model.
Why are two accuracy values stated?+
The source specifies ±0.3 cm or 5% of reading, whichever is greater. The page preserves that decision rule.
Does the sensor support automatic cleaning?+
The source lists an optional cleaning brush for automatic cleaning. Final cleaning configuration depends on fouling and maintenance conditions.
Can the product image be used as a dimensional drawing?+
No. It provides consistent public presentation. Dimensions and mounting remain controlled by the specifications and project confirmation.
Contact FUNEL
Tell us what you need to measure.
We will respond with a recommended configuration, supporting documentation and quotation.