Specifications

SR50A Table of Contents
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1. Specifications ..............................................................1
2. Introduction..................................................................2
3. Operation......................................................................2
3.1 Quality Numbers.......................................................................................3
3.2 Temperature Compensation for SR50A Version......................................3
3.3 SDI-12 Operation .....................................................................................4
3.3.1 SDI-12 Wiring ................................................................................4
3.3.2 SDI-12 Addresses ...........................................................................4
3.3.3 SDI-12 Commands..........................................................................4
3.4 RS-232 Operation.....................................................................................6
3.4.1 RS-232 Wiring................................................................................6
3.5 RS-485 Operation.....................................................................................7
3.5.1 RS-485 Wiring................................................................................7
3.6 RS-232 and RS-485 Settings ....................................................................8
3.6.1 BAUD Rate Setting.......................................................................10
3.6.2 Address .........................................................................................10
3.6.3 Operational Mode Setting.............................................................10
3.6.4 Distance to Target or Depth..........................................................11
3.6.5 Distance to Ground .......................................................................11
3.6.6 Measurement Interval Units..........................................................11
3.6.7 Measurement Interval Value.........................................................12
3.6.8 Output Unit ...................................................................................12
3.6.9 Quality Output ..............................................................................12
3.6.10 Temperature Output....................................................................12
3.6.11 Diagnostics Output......................................................................12
3.7 Serial Commands....................................................................................12
3.7.1 Setup Command............................................................................12
3.7.2 Poll Command ..............................................................................13
3.7.3 Information Command..................................................................13
3.7.4 Temperature Input Command .......................................................13
3.8 RS-232/RS-485 Data Output Format......................................................13
3.8.1 Measurement Output.....................................................................13
3.8.2 Information Message Output ........................................................15
4. Sensor Mounting and Installation ............................16
4.1 Beam Angle............................................................................................16
4.2 Mounting Height.....................................................................................17
4.2.1 Reference Point.............................................................................17
4.3 Mounting Options...................................................................................17
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