Final configuration is confirmed in the quotation.
Online Turbidity Sensor for Water & Wastewater
Continuous 860 nm, 90-degree scattered-light turbidity probe with selectable 0–10 to 0–4000 NTU ranges and simultaneous RS485 Modbus RTU / 4-20 mA outputs.
Start with the information you have. Exact model, interface and certificates are confirmed in writing before order.
Image details
Representative online turbidity-probe visual interpreted from a reviewed exact-product specification and independently de-identified. It is not an exact product photograph; range, hardware type, wetted materials, cleaning option, output, cable, mounting, markings and certificates are confirmed in the quotation.
Related solution: Water Monitoring
Where the hardware sits in the monitoring path
A planning view, not a fixed bundle. Signal type, protocol, power, network and the customer endpoint are confirmed before quotation.
Customer system
SCADA, BMS or customer-owned platform
Specifications
- Measurement principle
- 90° scattered light using an 860 nm source
- Selectable ranges
- 0–10, 0–100, 0–1000 or 0–4000 NTU
- Accuracy
- Type A / B / C: ±1% FS; Type D: ±2% FS
- Resolution
- Type A / B / C: 0.01 NTU at ≤10 NTU, 0.1 NTU above; Type D: 0.1 NTU
- Response time
- 1 s
- Outputs
- 4–20 mA and RS485 Modbus RTU simultaneously
Show 5 more specification rows
How the model is selected
The written quotation ties the site requirement to one reviewed hardware configuration.
Site requirement
Application, medium, mounting and environment
Hardware configuration
Signal, protocol, power and enclosure
Quote confirmation
Model, quantity, certificates and delivery
Remote integration context
Representative site context. Sensors, interfaces, enclosure, power and mounting are confirmed against the actual project before quotation.
Match the turbidity range, body and cleaning method
The reviewed record contains four hardware types. Range alone is not enough to select the ordered probe.
- Selectable ranges are 0–10, 0–100, 0–1000 and 0–4000 NTU. Normal and upset turbidity should stay inside the selected range.
- Types A, B and C are specified at ±1% FS. Type D includes a cleaning brush and is specified at ±2% FS with a different power profile.
- Types A, B and C resolve 0.01 NTU at or below 10 NTU and 0.1 NTU above 10 NTU. Type D resolution is 0.1 NTU.
Show 3 more reviewed selection notes
Model-selection reference
Water & Utilities Hardware Catalog
Use this audited section to compare available hardware configurations. The representative website image is not an exact model photograph; the ordered configuration is confirmed in the quotation.
- Catalog section
- Water-quality electrodes and probes
- SG-coded options
- 28
- PDF pages
- 4
Continue product selection
Compare adjacent hardware families for the same monitoring path. The final combination is checked against the project I/O, protocol, power and enclosure requirements.
How to choose
- Select 0–10, 0–100, 0–1000 or 0–4000 NTU from normal and upset levels; then choose Type A, B, C or D from materials, pipe / immersion geometry and cleaning demand.
- Use ±1% FS Type A / B / C or ±2% FS Type D deliberately. The Type D cleaning brush changes both the accuracy and power profile.
- Review colour, bubbles, deposits, flow direction, reflective surfaces and optical-window access before fixing the probe location.
- Confirm the simultaneous 4-20 mA / RS485 Modbus RTU wiring, 7–28 VDC supply, cable length, register map and receiving controller.
Compatible with
- PLC, RTU or analyzer accepting simultaneous RS485 Modbus RTU and 4-20 mA
- Treatment-water, wastewater and aquaculture monitoring points with defined cleaning access
- Immersion, pipe or self-cleaning installation selected from the process and fouling load
- 4G or Ethernet telemetry gateways after the register map and polling plan are confirmed
Typical package
- Selected Type A, B, C or D turbidity probe and NTU range
- 5 m field cable as the reviewed default
- Mounting bracket, pipe hardware or Type D cleaning-brush arrangement when quoted
- PLC, RTU, analyzer or telemetry gateway only when listed in the quotation
- Wiring, register-map, cleaning, calibration and commissioning notes for the ordered type
Applications
Use this 860 nm, 90-degree scattered-light probe for continuous turbidity monitoring in treatment water, wastewater, aquaculture and compatible process water. The 0–10, 0–100, 0–1000 and 0–4000 NTU ranges, wetted materials, installation and cleaning option must be selected as one configuration.
- Low-range treatment-water turbidity trends using the selected 0–10 or 0–100 NTU range
- Wastewater and process-water monitoring using a higher range matched to solids loading
- Aquaculture or surface-water points with optical-window cleaning access
- Pipe-mounted or self-cleaning installations when the appropriate type is ordered
What to include in your quote request
- Normal, upset and required maximum turbidity range
- Water type, colour, bubbles, solids, deposits and expected cleaning interval
- Type A / B / C / D, required accuracy, immersion / pipe mounting and wetted-material constraints
- Receiving PLC / RTU / analyzer, analog input, RS485 register-map needs and available 7–28 VDC supply
- Cable length, bracket or pipe hardware, Type D brush requirement, quantity, calibration and documentation
Related selection guides
Related resources
Frequently asked questions
Which turbidity range should I select?
Choose from 0–10, 0–100, 0–1000 or 0–4000 NTU using both normal and upset conditions. Low-range treatment water and high-solids wastewater should not use the same range by default.
What accuracy and resolution are available?
Types A, B and C are specified at ±1% FS, with 0.01 NTU resolution at or below 10 NTU and 0.1 NTU above 10 NTU. Type D with a cleaning brush is ±2% FS with 0.1 NTU resolution.
Does the turbidity probe support both analog and Modbus output?
Yes. The reviewed electrical configuration provides 4-20 mA and RS485 Modbus RTU simultaneously. Confirm supply, wiring, cable length, register map and the receiving PLC, RTU or analyzer before commissioning.
Is the turbidity sensor maintenance-free?
No. The optical window must be inspected and cleaned. Type D adds a cleaning brush, but brush condition, deposits, calibration and installation geometry still require maintenance review.
What should I provide when requesting a quote for the Online Turbidity Sensor for Water & Wastewater?
Normal, upset and required maximum turbidity range; Water type, colour, bubbles, solids, deposits and expected cleaning interval; Type A / B / C / D, required accuracy, immersion / pipe mounting and wetted-material constraints; Receiving PLC / RTU / analyzer, analog input, RS485 register-map needs and available 7–28 VDC supply
Where can I compare available model options?
Open the Water & Utilities Hardware Catalog linked on this page. It lists audited SG-coded selections; the ordered configuration is confirmed in the quotation.
Will it work with my existing system?
Compatibility is reviewed against your field signals, protocols and upstream platform. Typical pairings include PLC, RTU or analyzer accepting simultaneous RS485 Modbus RTU and 4-20 mA, Treatment-water, wastewater and aquaculture monitoring points with defined cleaning access, Immersion, pipe or self-cleaning installation selected from the process and fouling load.