Combined infrared absorption and dual-beam scattered-light ratio measurement
Wide-range optical analyzer · PSS-800
Wide-Range Suspended Solids / Sludge Analyzer
The broadest documented concentration coverage in the two-model PSS family, using combined infrared absorption and dual-beam scattered-light measurement with standard or seawater construction.
0.01–120000 mg/L±5% of reading≤2.5 m/s
Model-specific values checked against the supplied sheet
PSS-800 and PSS-600 retain separate ranges, accuracy, dimensions and process fit. Final configuration is controlled by the project confirmation document.
01
Measurement principle and product highlights
The supplied sheet references the ISO 7027 infrared method to reduce sample-color influence
Built-in self-diagnostics and optional automatic cleaning
Digital sensor output supports long-distance transmission and project integration
Automatic cleaning can be selected to reduce optical-window maintenance
Reverse-polarity protection is provided for sensor power and RS485 A/B wiring
Three 4–20 mA outputs, three configurable relays and Modbus RS485
Time display, data storage, historical-data review and optional wireless transmission
02
Verified technical specifications
Confirm whether the target is suspended solids, mixed liquor or sludge concentration; provide minimum, normal and peak mg/L, sludge homogeneity, process point, pressure, velocity, cleaning, material, cable and control interfaces before quotation.
- Measurement principle
- Combined infrared absorption and dual-beam scattered light
- Measurement range
- 0.01–20000 mg/L; 0.01–45000 mg/L; 0.01–120000 mg/L
- Accuracy
- ±5% of reading; dependent on sludge homogeneity
- Repeatability
- ±2%
- Resolution
- 0.01–1 mg/L, depending on range
- Pressure rating
- ≤0.4 MPa
- Maximum flow velocity
- ≤2.5 m/s (8.2 ft/s)
- Calibration
- Sample calibration; slope calibration
- Construction
- SUS316L standard; titanium-alloy seawater version; PUR cable
- 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 × 261 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
03
Recommended process fit
Activated-sludge process
Track mixed-liquor and sludge concentration through biological-treatment stages.
Secondary clarification
Monitor solids trends for settling, return-sludge and excess-sludge decisions.
Industrial wastewater
Measure suspended-solids changes in industrial treatment and discharge projects.
Municipal outlet and networks
Add continuous solids monitoring to plant outlets, drainage channels and network stations.
04
Items to confirm
First identify whether the target is suspended solids, mixed liquor or sludge concentration, then confirm normal, peak and installation conditions.
- 01Minimum, normal, peak and alarm concentration
- 02Aeration basin, return sludge, clarifier, outlet or industrial discharge point
- 03Sludge homogeneity, bubbles, coating, cleaning and maintenance interval
- 04Pressure, velocity, material, cable, 4–20 mA, relays and RS485
05
Project documents available on request
After receiving the operating conditions, we prepare the configured datasheet, installation confirmation, I/O schedule and quotation. The clean product image is not a dimensional drawing.
Get a quote- Configured model datasheet→
- Mounting and cleaning confirmation→
- Cable and I/O schedule→
- Project quotation→
06
Compare the other PSS model
Suspended Solids / Sludge Analyzer
View product↗07
Selection questions
What is the main difference between PSS-800 and PSS-600?+
PSS-800 provides wide-range configurations up to 120000 mg/L. PSS-600 uses a slimmer sensor and has a documented upper range of 50000 mg/L.
Why does sludge homogeneity affect accuracy?+
Optical results are influenced by particle distribution, bubbles and sludge homogeneity, so selection must confirm both range and the real process point.
Can the product image be used as a dimensional drawing?+
No. It provides consistent public presentation. Dimensions, interfaces, accessories and mounting come from the datasheet and order confirmation.
Contact FUNEL
Tell us what you need to measure.
We will respond with a recommended configuration, supporting documentation and quotation.