TU8525 B&C Electronics Inline Turbidity Sensor

ISO 7027 online turbidity sensor for continuous measurement in drinking water and industrial processes with 4…20 mA, RS485 and Modbus RTU output.

Manufacturer: B&C Electronics
Category: Water quality, SENSORS, Turbidity Sensors

B&C Electronics TU8525 in-line turbidity sensor for continuous measurement of low turbidity in drinking water, filtration processes and water treatment.

Measurement

Nephelometric method ISO 7027 using 90° light diffusion. Standards: ISO 7027 / EN 27027.
Pulsed infrared light source.
Configurable ranges: 0…4,000 / 0…40,00 / 0…400,0 NTU.
Resolution: 0.001 NTU.
Accuracy: 0.2% of selected full scale. Repeatability: 0.1%. Nonlinearity: 0.1%. Zero stability: ±0,400 NTU.
Configurable digital filter with dual time constant (2…220 s). Integrated temperature compensation.
Optical diagnostics using «check signal»: monitoring of the sensor's optical status, optical contamination, and absence of sample.

Signals and communication

Analog output 4…20 mA galvanically isolated. Maximum load: 600 Ω at 24 VDC.
Isolated RS485 digital communication with Modbus RTU (functions 03, 06 and 16) and B&C ASCII.
Communication speed: 2400 / 4800 / 9600 / 19200 baud.
EMC/RFI Compliance: EN 61326-2-3:2013 / EN 55011:2009.
Integration into PLC, SCADA and data acquisition systems.

Mechanical and environmental data

Power supply: 9…36 Vdc.
PVC-C body. TU8525.5 version in PVDF. IP68 protection.
Operating temperature: max. 60 °C. Maximum pressure: 6 bar at 25 °C.
Dimensions: 143 mm in length × 40 mm in diameter. Weight: 160 g for the body and 640 g for the cable.
Cable: 10 m standard, maximum 100 m.

Installation and accessories

Inline, overflow, or tank installation. Compatible accessories: TU910 and TU920 cells, YAT75M0021 adapter, and SZ7521 bracket.

Online: via adapters and bypass. For industrial bypass, use Tee type adapter YAT75M0021.
In storage: using specific accessories.
In overflow: cells TU910 and TU920.
Low turbidity: TU910 overflow cell, which stabilizes the sample, regulates the flow rate and reduces air microbubbles.
Higher turbidity or higher sample flow rate: TU920 cell.

Applications: water quality control, drinking water, water treatment plants and wastewater treatment plants, filtration control and industrial automation.

Properties

Model	TU8525
Manufacturer	B&C Electronics
Type of equipment	Industrial turbidity probe for water and processes
Measurement principle	Nephelometric method ISO 7027 using light diffusion at 90°
Regulations	ISO 7027 / EN 27027
Main application	Continuous measurement of low turbidity in drinking water and industrial processes
Applications	Drinking water, water treatment plant, water treatment and filtration control
Industrial integration	PLC, SCADA and data acquisition systems
Configurable ranges	0…4.000 / 0…40.00 / 0…400.0 NTU
Resolution	0.001 NTU
Precision	0.2 % of the selected full scale
Repeatability	0,1 %
Nonlinearity	0,1 %
Zero stability	±0.400 NTU
Analog output	4…20 mA galvanically isolated
Digital communication	Isolated RS485 with Modbus RTU
Protocols	Modbus RTU (functions 03, 06 and 16) and B&C ASCII
Communication speed	2400 / 4800 / 9600 / 19200 baud
Digital filter	Configurable digital filter with double time constant (2…220 s)
Temperature compensation	Integrated
Optical diagnosis	Check signal for monitoring the sensor's optical status
Feeding	9…36 Vcc
Maximum load	600 Ω at 24 VDC
Working temperature	Max. 60 °C
Maximum pressure	6 bar at 25 °C
Body material	PVC-C
Available version	Version TU8525.5 available in PVDF
Protection	IP68
Cable length	10 m standard, maximum 100 m
Dimensions	143mm length × 40mm diameter
Weight	160g body + 640g cable
Facility	In-line installation, overflow or tank
Compatible accessories	TU910 / TU920 cells, YAT75M0021 adapter and SZ7521 bracket
EMC/RFI Compliance	EN 61326-2-3:2013 / EN 55011:2009