ROC-8221 Single Stage Double Channels RO Controller
ROC-8221 is a combined control instrument of a single-stage reverse osmosis controller and double-channel on-line conductivity instrument.

ROC-8221 is a combined control instrument of a single-stage reverse osmosis controller and double-channel on-line conductivity instrument.

High Cost-Effective ,widely used for chemical industry,paper making industry,industrial coating,pharmaceutical,food,beverage,municipal water,Environmental and so on.

Single stage RO controller used for conductivity monitoring and process program control .

Typical applications • Widely used in thermal boiler deaerator water and large and medium-sized industrial boiler feed water; • Operational supervision of reactor Primary circuit, secondary circuit circuits and condensate system; • On-line analysis of dissolved oxygen in circulating water of heat exchange system; • Deaeration control of marine fresh water system, thermal system and…

This series instruments are widely used for online pH/ORP monitoring in environment protection water treatment, pure water treatment, industrial process and so on.


Meter, time clock dual mode. In flow mode, the internal flow transmitter realizes the function of setting water volume as required. After setting regeneration water volume and cleaning water volume of exchange tank, the period of softening water amount (ton) according to the hardness of the raw water, each station decreases to “0” according to the set value, and stops decreasing and maintains when the water is out of service or no water.

On-line analysis and process control of the oil refining, metallurgy,chemical synthesis industry process;

Salt and water savings by using 100% capacity of the tank in service before switching to the second tank
Regenerates immediately when needed for continuous soft water
Corrosion-free fiber-reinforced polymer valve body

One kind of popular and cost-effective online pH/ORP controller.