FLS M9.35 e M9.45 Conductivity Monitors and Transmitters

Advanced Conductivity Monitoring for Industrial & Ultrapure Water

The FLS M9.35 and FLS M9.45 models are high-performance devices designed for industrial applications and water treatment, including ultrapure water production systems. Both enable the monitoring of key water quality parameters, displaying conductivity, resistivity, or TDS according to operational needs.

They feature a large 4” graphical display with high-brightness backlighting, ensuring clear and immediate readability even from a distance, thus improving usability in industrial environments. The freely configurable cell constant allows the use of any 2-cell sensor, offering maximum flexibility for system integration. In addition, both models include a 4–20 mA analog output for reliable data transmission to remote systems, ensuring accurate and continuous process control.

The FLS M9.45 stands out for its advanced connectivity and control features: it integrates the Modbus protocol, enabling real-time data access and enhanced system monitoring, and includes a digital SSR output, which allows fast and reliable activation of minimum and maximum alarms, increasing process safety and protection.

The FLS M9.35, while maintaining high performance and reliability, represents a more essential solution, without the Modbus communication functionality and digital SSR output available in the higher model.

Main advantages of Modbus RTU

Reduction of wiring and installation costs
High compatibility with international standards
Reliable signal transmission even in harsh environments
Remote configuration capability
Simple and cost‑effective scalability

APPLICATIONS:

Water treatment and regeneration
Industrial wastewater recovery and treatment
Softening and filtration systems
Desalination
Demineralised water production
Reverse osmosis / EDI
Cooling system monitoring
Manufacturing processes
Chemicals production

MAIN FEATURES:

Multiple visualization of Conductivity, Resistivity or TDS
Configurable Cell Constant, compatible with any 2‑cell conductivity probe on the market
Temperature compensation specifically designed for ultrapure water (UPW) applications
Transflective technology display with backlight
Conductivity input range: 0.055 ÷ 200000 μS/cm
Conductivity measurement accuracy: ± 2.0% of reading
Supply voltage: 12–24 VDC ±10% (regulated)
Max electrical consumption: < 300 mA