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After 25 years of development, SMART series of 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.

MEMS (Micro-Electro-Mechanical Systems) sensors: Next generation Sensors!
Factory pre-calibrated, pre-set
Online self-diagnosis function measurement status
Automatic temperature compensation
Digital signal transmission, cable length and other characteristics are not subject to influence
Connected to the controller using M12 connector,easy to connect
Save the factory calibration data, zero, slope, etc.
Save factory data: Sensor address, model number, serial number, etc.



The PHEH sensor has been designed to perform under hard conditions from pure mountains water with conductivity as low as 20 S/cm, lakes and rivers (100 C 2000 S/cm), seawater with conductivities of 50 mS/cm and to wastewater with conductivity higher than 200 mS/cm.

This sensor features a long life reference. This sensor has been designed also for handheld and in situ applications which have been the most difficult situations for a pH/ORP sensor in term of sensor resistance, quick time response, minimal flow dependence and low power consumption.

Principle:
PH is the negative hydrogen ion concentration (activity) logarithm: pH = -lg [H +], it is acidic or alkaline solution of the potential characteristics associated with its hydrogen ion concentration.
ORP is a measure of the process medium oxidizing or reducing the index for different aqueous solutes between -1500mv and 1500mv measurement range is. Measuring electrode commonly used precious metal (gold or platinum).
Electrochemical PH / ORP glass composite electrode, based on the principle of a potentiometer, because the measuring electrode and the reference voltage between the electrodes than follow the Nernst equation: potential to measure the PH / ORP Redox value, has become a global PH / ORP measurements standard.
Features:
 intelligent digital MEMS sensor
 sensor self-diagnostics, proactive maintenance and management tips
 sensor automatically complete all compensation and measurement algorithms
 sensor data communication bus cable up to 1000 meters
 sensor address can be set easily network expansion
 fast response sensor
 sensor IP68 protection class
 Automatic Temperature Compensation
 electrochemical sensor
 KCl gel electrolyte
 PTFE porous permeable material durable
 good robustness
 good stain resistance
 can be achieved with a measuring electrode is also PH / ORP
 automatic cleaning
MEMS sensor eliminates the following problems:
 corrosion
 contact problems
 salt bridge
 moisture
 Leak
 high impedance connection
 Ground
Application:
 source water monitoring
 detection filter
 backwash detection
 factory quality monitoring
 Filter fouling monitoring
 Separation Process Monitoring
 cooling water monitoring
 detect circulating water
 sludge treatment monitoring
 aeration tank monitoring
Installation:
Note mounted above the horizontal plane 15 degrees, for the first time installation takes about 20 minutes polarization time. When long-term use, can be PH / ORP electrode is kept moist (best storage solution is a solution of potassium chloride pH of 7 or 3mol, important to note that can not be stored in deionized water and the pH in the liquid), after the store will be found appear white crystals of potassium chloride, after cleaning the surface does not affect the measurement. A sensor in the storage phase dried out, the sensor can be immersed in a solution of potassium chloride, pH 7 or 3mol a period of time, the sensor will recover water glass membrane and reference diaphragm.
Calibration:
When pH / ORP calibration, wait 5 ~ 10 min until stable operation before confirmation.

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