4Table of Contents6 Additional Features ................................................................ 216.1 Cl, pH and Temperature Measurements .............................216.1.1 Installation ....................................................................216.1.2 Software Set-up ............................................................226.1.3 Routine Maintenance ....................................................236.1.4 Shut-down and Winterizing ...........................................246.1.5 Replacing Sensors........................................................246.1.6 Troubleshooting ............................................................256.2 Turbidity Measurements .....................................................256.2.1 Installation ....................................................................256.2.2 Relay Wiring and Use ...................................................276.2.3 First Time Set-up and General Operation .....................286.2.4 Routine Maintenance ....................................................296.2.5 Cleaning the Turbidity Sensor.......................................296.2.6 Shut-down and Winterizing ...........................................296.2.7 Replacing Components ................................................306.3 Conductivity Measurements ................................................306.3.1 Installation ....................................................................306.3.2 First Time Set-up and General Operation .....................316.3.3 Routine Maintenance ....................................................316.3.4 Cleaning the Conductivity Meter ...................................316.3.5 Shut-down and Winterizing ...........................................316.3.6 Replacing Components ................................................326.3.7 Replacing the Conductivity Meter .................................326.4 Flow Meter ..........................................................................326.4.1 Installation ....................................................................326.4.2 Routine Maintenance and Troubleshooting...................336.5 Communication Options......................................................336.5.1 External 4 to 20mA Outputs ..........................................336.5.2 Internal 4 to 20mA Output .............................................367 Appendix A: Relays and Closed-Loop Control ....................... 387.1 Connecting external equipment to the Relays .....................387.1.1 Wiring to Dosing Systems .............................................387.1.2 Proportional Control Overview ......................................397.1.3 Setting Proportional Factor ...........................................407.1.4 Setting Pump Period .....................................................407.1.5 Step By Step Proportional Settings ...............................408 Appendix B: Technical Specifications..................................... 41