Overview
SMART series intelligent multi-parameter universal controller has high accuracy, its unique professional design can be applied in water, chemical, pharmaceutical, food and hygiene in the production process of the most extreme physical and chemical environments. SMART series intelligent multi-parameter universal controller has modular bus structure, highly scalable functionality, high reliability and comfortable operation.
Principle
Dissolved oxygen is the content of gaseous molecular oxygen dissolved in water. The content of dissolved oxygen in water is closely related to the partial pressure of oxygen in the air and the temperature of water.
Luminescent optical method: the blue pulsating light beam emitted by the internal optical system of the sensor hits the fluorescent layer, and the marker "responds" (produces fluorescence) with pulsating red light. The duration and intensity of the excited response signal are directly related to oxygen The composition is related to the partial pressure. (*Amperometric method: Oxygen molecules penetrate the gas permeable membrane at the front of the sensor and are reduced by the working electrode to generate a diffusion current proportional to the oxygen concentration.)
Application
▲Sewage treatment plant
▲Drinking water plant
▲Rivers and lakes
▲Fishing
▲Circulating water of power plant boiler
▲Fermentation tank product quality monitoring in the food and pharmaceutical industry
Feature
★Smart digital MEMS sensor
★Sensor self-diagnosis, proactively reminding maintenance and management
★Automatically completes all compensation and measurement algorithms
★Real-time temperature, salinity and pressure compensation
★Quick response sensor
★IP68 Sensor
★Luminescent optical sensor
★Good robustness
★No calibration, no film, no fluoride, no drift
★Unlimited PH value, CO2, H2S, SO2 influence
★High-precision measurement under low dissolved oxygen concentration
★No oxygen consumption
★Comply with ASTM standard D888-05
Installation
▲No need to wait for polarization, measure immediately!
▲No need to replace the membrane and fluorocarbon, saving cost!
▲No need to disassemble, convenient!
▲No regeneration, it is impossible to predict the decay from sewage on the surface of the thermometer
▲H2S or ammonia in the liquid does not affect the measurement
▲No need to replace the film and carbon dioxide
▲No need to continuously perform on-site calibration
▲Clean the sensor surface: every month
▲Sensor calibration: every quarter
▲Replace the fluorescent cap: about every 2 years
Application Case
★Sewage aeration tank: Nitrogen and phosphorus removal, COD degradation, and dissolved oxygen as an important parameter for controlling aeration.
★Ion: Dissolved oxygen detection during iron and manganese ion removal process
★Power plant: boiler water supply
Controller features
• Quick and convenient
The navigation menu contains 6 languages, which can be operated easily.
• Process safety
4.3" or 7" large size color LCD touch screen, convenient and safe touch operation and debugging
Large size screen with red flashing alarm, clearly visible from long distances and in dark areas
Alarm immediately, safe the process
• Alarm event record
Real-time data curve display
Record function for up to 6000 alarms
• Expert calibration function
Multi-point calibration function up to 9 point
• Powerful self-diagnosis function
Built-in heartbeat monitoring function and watchdog
Monitor the status of controllers and sensors, and promptly remind customers to take necessary maintenance
High-standard hardware and software security and password protection
• Powerful control function
High(low) limit control function
Optional: Timer control(automatic cleaning) function
Optional: analog PID controller
Optional: PWM controller
• Flexible fieldbus communication functions for IOT4.0
Optional fieldbus MODBUS, HART, Foundation Fieldbus FF, PROFIBUS PA, PROFIBUS DP, etc.
Product datasheet: Dissolved Oxygen Analyzer 
, if you need more information, please contact us at info@mzdd.de.