pH / ORP Sensor & Controller
Advanced pH/ORP sensors and digital transmitters designed for stable, real-time water quality monitoring and process control.
Advanced pH/ORP sensors and digital transmitters designed for stable, real-time water quality monitoring and process control.
High-Precision pH/ORP Monitoring Made Simple
Reliable Control Functions
Two configurable SPST relays support high/low alarms, temperature control, and cleaning control.
Rich Output Functions
Users can select either 0/4–20 mA analog output or RS485 digital communication for easy integration with PLCs, PCs, and other industrial control systems.
For Diverse Applications
Different electrode models are available for wastewater, high-temperature, hydrofluoric acid, pure water, fermentation, desulfurization, denitrification, heavy metal, and low-temperature applications.
ORP: ±2000mV, Temp: 0~60℃
2-5 weeks
1
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ORP: ±2000mV, Temp: 0~50℃
2-5 weeks
1
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0~14 pH
2-5 weeks
1
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0~14 pH
2-5 weeks
1
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±2000mV
2-5 weeks
1
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ORP
2-5 weeks
1
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±1500mV
2-5 weeks
1
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±2000mV
2-5 weeks
1
Contact Us
0~14 pH
2-5 weeks
1
Contact Us
0~14 pH
2-5 weeks
1
Contact Us
0~14 pH
2-5 weeks
1
Contact Us
0~14 pH
2-5 weeks
1
Contact Us
Contact Delfino today for a competitive quote and technical guidance on our full range of online sensors and controllers.
A wide range of electrode models is available for application in diverse scenarios, designed to withstand various process environments—including high and low temperatures, desulfurization and denitrification processes, the presence of heavy metal ions, hydrofluoric acid, high-temperature fermentation, and pure water systems. Our engineers can provide tailored solutions to meet your specific requirements, offering customization options such as specialized reference electrodes and custom lengths.
Online pH/ORP analyzers support signal output and control functions. Selected models also feature a real-time clock and data logging with export and download capability. Multiple output options are available, including 4–20mA analog output and RS485 Modbus communication, balancing cost efficiency and high performance.
Various housing sizes support flexible installation, such as panel mounting, wall mounting, and pipe mounting. The controller also features patented operating temperature monitoring and hardware temperature drift compensation technology, ensuring stable and accurate performance.
A leading chemical manufacturing plant required precise pH control for their high-acid effluent neutralization process in Spain.
Delfino ASP300 series composite pH sensors paired with APX2-C1 digital controllers.
Our solid-electrolyte sensors eliminated junction clogging caused by chemical precipitates, reducing maintenance frequency by 60% and ensuring total compliance with environmental discharge standards.
A modern recirculating aquaculture system (RAS) facility needed a centralized solution to monitor pH levels across multiple shrimp tanks in Ecuador.
Daruifuno MCC500 Multi-parameter Controller integrated with digital pH sensors featuring Modbus RS485 output.
Our multi-channel system enabled simultaneous real-time tracking for up to 20 tanks, triggering automatic alerts for pH fluctuations to prevent mass mortality and optimize growth conditions.
Leading mining operations in Australia utilize ORP monitoring to strictly regulate cyanide destruction and ensure environmental compliance for safe wastewater discharge.
Integrating DUC2-ORP digital controllers with DRH series sensors provides stable, real-time monitoring of oxidation-reduction potentials, optimizing chemical dosing to neutralize toxic cyanide effectively.
Implementation of this digital system resulted in a 20% reduction in chemical reagent waste and achieved 100% compliance with local environmental discharge standards. Continuous real-time data logging prevents costly operational downtime, ensuring long-term reliability and significant cost savings for large-scale mining projects.
Our high-precision digital sensors utilize the potentiometric method to provide real-time, laboratory-grade quantification of acidity and oxidation-reduction states in complex industrial fluids.
pH Measurement Principle (Nernstian Electrochemical Logic): Based on the mathematical framework of the Nernst Equation, the pH sensor detects the thermodynamic activity of hydrogen ions (H⁺) using a specialized glass membrane electrode. When immersed, an electrical potential develops across the hydrated gel layer relative to a stable silver/silver chloride (Ag/AgCl) reference electrode. The system incorporates Automatic Temperature Compensation (ATC) to correct for the 59.16 mV/pH unit slope sensitivity, ensuring reliable data for critical process control in wastewater treatment and chemical manufacturing.
ORP / Redox Potential Principle (Electron Exchange Monitoring): Oxidation-Reduction Potential (ORP) measures the capacity of a solution to either release or accept electrons using a noble metal electrode (typically platinum or gold). By measuring the millivolt (mV) potential difference against the same stable Ag/AgCl reference, the sensor provides an immediate assessment of the Redox state. This is essential for tracking disinfection efficacy, such as chlorine residual strength, and managing complex industrial reactions like cyanide destruction or chromate reduction.
Precision pH monitoring is a cornerstone of environmental protection and sustainable water management, serving as a critical early-warning system to prevent the acidification of natural aquatic ecosystems. By maintaining optimal alkalinity through real-time digital sensing, industrial facilities can significantly reduce their ecological footprint and ensure that treated effluent complies with strict green living standards and discharge regulations. This proactive approach to water quality conservation effectively mitigates the impact of chemical runoff, safeguarding biodiversity and promoting the circular economy through the safe reuse of water resources.
Whether your business is complex or simple, you will get an accurate quote within 12 hours.
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