Character & Application
The ROC-860 touch color screen RO control system is a multi function controller with combination of resistance- type touch screen + PLC program control and inline conductivity measuring,it is designed for the system control and water quality testing of reverse osmosis system.

The display content of the interface are mainly: Conductivity value monitoring interface, system input signal monitoring,output state display, dynamic system process chart,manual controlling interface, setting interface etc. follow the process state of system in real time, which making people could completely control the whole system very easy.

The instrument is available in two versions, single stage control system and double stage control system, the RO controller could monitor the conductivity of raw water, first stage production water, second water production water at same time. With 4-20mA output and RS232 communication system (RS232 adopt MDBUS RTU communication agreement), making the communication between instrument and computer, PLC remote communication and internet.

The RO control system making the complete system realize automatic control and unattended monitoring. It could be widely used for pure water equipment,seawater desalination, reverse osmosis system in many industries.

Main Technique Specifications

ⅡTechnical data
Singe stage reverse osmosis system

①Collection point of input signal
Water level of raw water tank, for checking with or without water
Low pressure switch of first stage
High pressure switch of first stage
Water level switch of pure water tank
Hand or automatic control

②Controlling point of output
Raw water pump
High pressure pump of first stage
High pressure pump of second stage
Inlet valve
Pretreatment valve
Flushing valve
Over-limit discharge valve of first stage conductivity
Over-limit discharge valve of second stage

③ Measure collection point
Raw water conductivity collection,
Pure water conductivity collection,
Temperature collection

④Measuring Range
Raw water conductivity: 0～2000μS/cm；
Pure water RO conductivity: 0～200μS/cm,
Temperature test: 0-60℃
Conductivity sensor: 1.0cm-1, cable length 5m

Double stage reverse osmosis system
①Collection point of input signal
Water level of raw water tank, for checking with or without water
Low pressure switch of first stage (before the first-stage high pressure pump)
High pressure switch of first stage (after the first-stage high pressure pump)
Low water level of mid tank
High water level of mid tank (if no mid tank, high water level terminal is free, low water level can be replaced by low pressure switch)
High pressure switch of second stage (after the second-stage high pressure pump)
High water level of second-stage pure water tank (checking of water full)
Communication switch of pretreatment (when pretreatment is working, the system is standby.

②Controlling point of output
Raw water pump
Inlet valve
High pressure pump of first stage
Flushing valve
Over-limit discharge valve of first stage conductivity
High pressure pump of second stage
Over-limit discharge valve of second stage
Relay of alarm (could be connected audible and visual alarm)

③ Measure collection point
Raw water conductivity collection,
one stage production water conductivity collection,
two stage production water conductivity collection,
temperature collection

④Conductivity measurement
Raw water conductivity : 0～2000μS/cm；
Conductivity of first-stage reverse osmosis :0～200μS/cm；
Conductivity of second-stage reverse osmosis :0～20μS/cm
Temperature test: 0-60℃
Conductivity sensor: 1.0cm-1, cable length 5m

RO System Application