
Content
1Introduction................................................................................................................................. 6
2Unpacking.................................................................................................................................... 7
3Quick start ................................................................................................................................... 8
3.1 Installation............................................................................................................................ 8
3.2 Connection of the USH-9 to a computer.................................................................................. 8
3.3 Sensor configuration.............................................................................................................. 8
4Specifications............................................................................................................................... 9
5Principles of operation.................................................................................................................10
6Installation..................................................................................................................................11
6.1 Selection of the measurement site ........................................................................................11
6.2 Mounting.............................................................................................................................11
6.2.1 Power supply..............................................................................................................12
6.2.2 Signal cables...............................................................................................................13
6.2.3 Lightning protection....................................................................................................13
6.3 Maintenance........................................................................................................................13
7Operation....................................................................................................................................14
7.1 How to setup the USH-9 for snow applications.......................................................................14
7.2 How to setup the USH-9 for water level measurements..........................................................14
7.3 How to test the USH-9..........................................................................................................14
8Communication...........................................................................................................................15
8.1 Connector pin configuration..................................................................................................15
8.2 Communication with a PC.....................................................................................................15
8.3 Connection to a data logger..................................................................................................17
8.3.1 RS-485........................................................................................................................17
8.3.2 SDI-12 ........................................................................................................................17
8.3.3 Analog output.............................................................................................................18
8.4 Modbus communication.......................................................................................................18
9Configuration..............................................................................................................................19
9.1 Setup using Commander.......................................................................................................19
9.2 Setup using a terminal program.............................................................................................19
9.3 General settings ...................................................................................................................20
9.4 Level/Distance measurement................................................................................................20
9.5 Serial data output.................................................................................................................21
9.6 RS-485 interface...................................................................................................................23
9.6.1 System key and device number....................................................................................23
9.6.2 Output time (D-I-D).....................................................................................................23
9.6.3 Operation modes........................................................................................................24
9.6.4 Waking-up of a connected datalogger .........................................................................24
9.6.5 Output protocols.........................................................................................................24
9.6.6 Commands .................................................................................................................27
9.7 SDI-12 interface....................................................................................................................28
9.7.1 SDI-12 address (D-C)....................................................................................................28
9.7.2 Measurement commands............................................................................................28