EPA 90° scattered-light method for low-range treated-water monitoring
Compact low-range analyzer · PLTU-600
Compact Low-Range Turbidity Analyzer
An all-in-one low-range analyzer with a 3.5-inch LCD, 200–400 mL/min sample flow and simplified quick-connect inlet, outlet and cleaning ports.
0.001–100 NTU200–400 mL/min3.5-inch LCD
Model-specific values checked against the supplied sheet
Range, accuracy, pressure or sample flow, interfaces, dimensions and protection are not copied between the five models. Final mounting and project configuration are controlled by the confirmation document.
01
Measurement principle and product highlights
Integrated 3.5-inch LCD and compact one-piece housing
Quick-connect inlet, outlet and cleaning ports simplify service
One 4–20 mA output, one relay and Modbus RS485
02
Verified technical specifications
Confirm the normal and peak NTU, process location, particles and bubbles, freshwater or seawater, pressure or sample flow, mounting, cleaning, cable and control interfaces before quotation.
- Measurement principle
- EPA 90° scattered light; integrated flow-through
- Turbidity range
- 0.001–100 NTU
- Accuracy
- 0.001–40 NTU: ±2% of reading or ±0.015 NTU, whichever is greater; 40–100 NTU: ±5%
- Repeatability
- ≤2%
- Resolution
- 0.001–0.1 NTU, depending on range
- Display
- 3.5-inch LCD
- Sample flow
- 200–400 mL/min
- Process connections
- Inlet quick fitting for Ø8 hose; outlet and cleaning quick fittings for Ø12 hose
- Calibration
- Sample calibration; slope calibration
- Construction
- ASA housing; PUR cable
- Power supply
- Instrument 9–36 VDC; supplied 220 VAC to 12 VDC adapter
- Analog output
- 1 × 4–20 mA
- Relays
- 1 relay
- Digital communication
- Modbus RS485
- Storage temperature
- -15–60°C
- Operating temperature
- 0–45°C, non-freezing
- Sensor / instrument dimensions
- 158 × 166.2 × 155 mm
- Sensor / instrument weight
- 1 kg
- Sensor / instrument protection
- IP65, indoor
03
Recommended process fit
Filter outlet
Low-range verification after filtration and polishing stages.
Finished drinking water
Continuous treated-water monitoring where small changes matter.
Desalination
Monitor filtration and product-water stages in desalination systems.
Cooling and reuse water
Track low-range turbidity in filtered cooling and reclaimed water.
04
Items to confirm
First distinguish wide-range immersion monitoring from low-range flow-through monitoring, then confirm the real operating conditions.
- 01Normal, peak and alarm turbidity
- 02Raw water, sedimentation, filter outlet, finished water or wastewater point
- 03Particles, color, bubbles, fouling and cleaning conditions
- 04Pressure or sample flow, mounting space, cable and control interfaces
05
Project documents available on request
After receiving the operating conditions, we prepare the current 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 or flow-cell confirmation→
- Cable and I/O schedule→
- Project quotation→
06
Compare other turbidity models
Wide-Range Online Turbidity Analyzer
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Online Turbidity Analyzer
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Compact Online Turbidity Analyzer
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Selection questions
Should I select PTU or PLTU?+
PTU uses an immersion online sensor for raw water, wastewater and process water. PLTU is a low-range flow-through configuration for filter outlet, finished water and direct drinking water.
Can models with similar ranges be interchanged?+
No. Accuracy, pressure or sample flow, sensor construction, material, protection and process connections also differ.
Can the clean product image be used as a dimensional drawing?+
No. It provides consistent public presentation. Dimensions, interfaces and accessories come from the verified specifications and order confirmation.
Contact FUNEL
Tell us what you need to measure.
We will respond with a recommended configuration, supporting documentation and quotation.