ROC pH/ORP-5500 series pH ORP online transmitting controller
This series instruments are widely used for online pH/ORP monitoring in environment protection water treatment, pure water treatment, industrial process and so on.

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.

Meter and time dual mode, the meter mode, its inflow meter achieved all station can be set according to the water volume demanded , as long as set by the swap of tank volume (L) backwash water and wash water, set cycle running water volume(ton), according to the set value for each station after descending to the switch when the “0”, discontinued or no water stop decreasing and maintain. This series of products have beautiful appearance, high material precision of valve body parts, good strength and high temperature resistance, and the main valve body is connected with metal inserts with good maintainability.

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

Time-testedĀ hydraulicallyĀ balancedĀ piston,Ā sealĀ andĀ spacerĀ designĀ toĀ pilotĀ serviceĀ flowĀ andĀ regeneration
Solid,Ā lead-freeĀ brassĀ valveĀ bodyĀ forĀ superiorĀ strengthĀ andĀ durability
BackwashĀ capacityĀ handlesĀ tanksĀ upĀ toĀ 30″Ā diameter
1-1/2″Ā topĀ mountĀ controlĀ valveĀ idealĀ forĀ smallerĀ sizeĀ commercial/industrialĀ applications
ConsistentĀ briningĀ regardlessĀ ofĀ saltĀ levelsĀ withĀ timedĀ brineĀ refills
ChoiceĀ ofĀ 7Ā orĀ 12Ā dayĀ clock,Ā manualĀ orĀ meter
ContinuousĀ flowĀ rateĀ ofĀ 51Ā GPMĀ withĀ aĀ backwashĀ ofĀ 49Ā GPM

Fully adjustable, 5-cycle control delivers upflow backwash, downflow brining, slow rinse, rapid rinse, brine refill, and downflow service
Time-tested, hydraulically-balanced piston, seal and spacer, controls service flow and regeneration
Non-corrosive, fiber-reinforced polymer construction
Excellent flow rates (19 GPM continuous, 24 GPM peak)
Backwash capacity handles tanks up to 16″ diameter for softener, andĀ filter


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

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