The JIRS Residual Chlorine Sensor is designed for continuous online measurement of free chlorine and hypochlorous acid (HOCl) in water treatment processes. Built with an advanced constant voltage three-electrode system and a platinum working electrode, it provides stable and accurate readings across a 0–20.00 mg/L range with 0.01 mg/L resolution.

JIRS pH sensor series offers five industrial online pH combination electrodes — GP-100, GP-100T, GP-100 PTFE, GP-100T PTFE, and GP-400G — covering 0–14 pH measurement across 0–120 °C. Featuring gel electrolyte salt bridges, anti-fouling PTFE or ceramic diaphragms, and low-impedance glass membranes, these sensors deliver ±0.01 pH accuracy with 5-second response. Options include ABS, PTFE, or high-temperature glass bodies, with or without PT1000/PT100/NTC temperature compensation, for wastewater treatment, chemical processing, and corrosive environments.

JIRS GO-300 and GO-400G are industrial online ORP (Oxidation-Reduction Potential) sensors built for continuous water quality monitoring. Combining platinum measuring electrodes, gel-filled reference systems, and anti-fouling PTFE diaphragms, these redox sensors deliver fast 5-second response and long-term stability with zero electrolyte refilling. The GO-300 (ABS body, 0–60 °C) covers general wastewater treatment, while the GO-400G (high-temperature glass body, 5–100 °C) handles boiler water and chromium-containing wastewater.

LCD display with backlight, English operation interface.

The Conductivity/TDS Sensor CR-104Q is a highly accurate and reliable device designed for measuring the conductivity and total dissolved solids (TDS) in various aqueous solutions. Its user-friendly interface and robust construction make it ideal for applications in laboratories, hydroponics, and water quality monitoring, ensuring precise readings for effective analysis.

This industrial digital EC conductivity sensor provides stable online measurement for water conductivity, TDS and salinity. With dual output, IP68 waterproof and temperature compensation, it is widely used in water treatment, aquaculture and industrial water monitoring systems.

This industrial ORP sensor is designed for online oxidation-reduction potential monitoring in water systems. It provides dual output: RS485 Modbus RTU and 4–20mA analog, supporting stable long-distance transmission and easy integration with PLC, DCS, and SCADA systems. With high accuracy, IP68 waterproof, corrosion-resistant housing, and automatic temperature compensation, it works reliably in wastewater, aquaculture, chemical processing, and environmental monitoring. Simple to activate, calibrate, and maintain, it delivers stable data for long-term online use.

This industrial digital pH sensor is a professional online monitoring device designed for real-time acidity and alkalinity detection in various water bodies. It features dual output (RS485 Modbus RTU + 4-20mA) for flexible integration with industrial control systems, high precision (±0.02 pH), IP68 waterproof protection, and automatic temperature compensation. Suitable for wastewater treatment, aquaculture, chemical processing, drinking water monitoring and other industrial scenarios, it provides stable, reliable and accurate data support for production and environmental management, with simple operation and low maintenance costs.