Hach 911 User Manual page 4

Table of Contents
7.1.1 Replacing the Battery Compartment Desiccant ................................................................57
7.2 Maintaining the O-Ring Gasket on the End Cap .......................................................................57
7.3 Cleaning the Flow Meters ..........................................................................................................58
7.4 Storing the Flow Meters ............................................................................................................58
7.5 Cleaning the Connectors ...........................................................................................................58
7.6 Maintaining the Electronics Compartment .................................................................................58
7.6.1 Fuses ................................................................................................................................58
7.6.2 Memory Batteries .............................................................................................................58
7.7 Replacing the Batteries in the RS232 Interface ........................................................................59
7.8 Maintaining the Submerged Area/Velocity Sensor ....................................................................59
7.8.1 Cleaning the Transducer Port ...........................................................................................59
7.8.2 Cleaning the Submerged Area/Velocity Sensor (Oil-filled and Non-oil) ...........................60
7.8.3 Replenishing the Oil .........................................................................................................62
7.8.4 Changing the Submerged Area/Velocity Sensor Desiccant .............................................63
7.8.5 Replacing the Desiccant ...................................................................................................64
Section 8 Replacement Parts and Accessories .................................................................67
8.1 Flow Meter Replacement Parts .................................................................................................67
8.2 Sensors .....................................................................................................................................67
8.3 Sensor Mounting Rings and Bands ...........................................................................................67
8.4 Ultrasonic Sensor Mounting Hardware ......................................................................................68
8.5 Mounting Plate Hardware for Directly Mounting to Pipe Wall ....................................................69
Section 9 Contact Information .............................................................................................71
Section 10 Contact information for Europe ........................................................................72
Section 11 Limited Warranty ................................................................................................73
Appendix A Working with Primary Devices ........................................................................75
Appendix B Channel Installation Options ...........................................................................81
Appendix C Batteries and Chargers ....................................................................................87
Appendix D SCADA-Modbus® System Guidelines ............................................................91
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