Applications: Industrial Use: This intelligent upgrade product of an industrial acidity meter can continuously measure and control the pH value of sewage. Suitable Industries: Urban sewage treatment plants, chemical industry, printing and dyeing, papermaking, pharmaceutical, electroplating, and environmental applications. Features: User Interface: Factory standard configuration with a Chinese interface, language menu allows switching between Chinese and English. Versatile Measurement: Can perform pH/ORP measurement, upper and lower limit control, current output, and digital communication. Temperature Compensation: Set to automatic or manual temperature compensation. Alarm System: PH high limit alarm, low limit alarm with double relay, adjustable hysteresis. Isolated Transmission: Meter mode isolates the transmission port with a maximum loop resistance greater than 300. Voice Alarm: Switch function for voice alarm, set on or off through interface options. Energy-Saving: LCD backlight with an energy-saving mode, timing automatic shutoff. High Performance: Equipped with a high-performance CPU with good electromagnetic compatibility. Security: Password management function to prevent misuse by unauthorized personnel. Specifications: Measuring Range: pH (014pH); ORP (-19001900mV) Accuracy: 0.02pH; 1mV Resolution: 0.01pH; 1mV Stability: 0.02pH/24 hours; 3mV/24 hours PH Standard Solution: 4.00/6.86/9.18 Display Mode: 128x64 dot matrix LCD Temperature Compensation: 0~100C manual/automatic (NTC10K) Signal Output: 4-20mA isolation protection output, maximum loop resistance 300 Alarm Output: One set of high and low limit alarm contacts (3A/250V AC), normally open contact relay Power Supply: AC 220V10% 50Hz Power Consumption: 3W Environmental Conditions: Temperature 0~60C, Humidity 85%RH Dimensions: 96x96x110mm (height x width x depth) Opening Size: 92x92mm (height x width) Package Includes: 1 x Industrial PH Controller 1 x 5m Plastic Box Electrode Product Benefits: Continuous Monitoring: Ideal for industries requiring continuous pH/ORP monitoring and control. Accurate and Reliable: High accuracy and stability ensure reliable measurements. User-Friendly: Easy-to-use interface with language options and simple navigation. Durable: Built to withstand harsh industrial environments with robust construction. Energy-Efficient: Features such as automatic backlight shutoff help conserve energy. Secure: Password protection to prevent unauthorized changes to settings. This PH Controller is an excellent choice for industrial applications requiring precise and continuous pH and ORP monitoring, providing reliability, ease of use, and robust performance.