SR50A Sonic Ranging Sensor
- 3 -
5
Maintenance .................................................................................................................... 32
6
Disassembly/Assembly Procedures ................................................................................ 33
7
Jumper Settings ............................................................................................................... 37
8
SR50A Firmware Updates .............................................................................................. 38
9
Data Interpretation & Filtering ....................................................................................... 40
9.1
Data Interpretation .................................................................................................... 40
9.2
Data Filtering ............................................................................................................ 40
10
Datalogger Program examples ........................................................................................ 43
10.1
Programming Example 1 ...................................................................................... 43
SR50A SDI-
12 “M1!” CR10X Datalogger
......................................................................... 43
10.2
Programming Example 2 ...................................................................................... 45
SR50AT SDI-
12 “M3!” CR10X Datalogger
...................................................................... 45
10.3
Programming Example 3 ...................................................................................... 46
SR50A SDI-
12 “M1!” CR1000 Datalogger
....................................................................... 46
10.4
Programming Example 4 ...................................................................................... 47
SR50AT SDI-
12 “M4!” Snow Depth Output CR1000
....................................................... 47
10.5
Programming Example 5 ...................................................................................... 49
SR50A RS-232 Mode CR1000 ........................................................................................... 49
10.6
Programming Example 6 ...................................................................................... 51
SR50AT RS-232 Mode CR1000 ........................................................................................ 51
11
Warnings/Cautions .......................................................................................................... 53
12
APPENDIX A: SR50AH Heater Option ........................................................................ 54
12.1
Heater Introduction ............................................................................................... 54
12.2
Specifications ........................................................................................................ 54
12.2.1
Heating Cable Requirements ............................................................................ 54
12.3
Maintenance .......................................................................................................... 55
13
APPENDIX B: Optional Open Faced Transducer for Harsh Environments .................. 60
13.1
General .................................................................................................................. 60
14
APPENDIX C: SR50A-316SS and SR50AT-316SS Options ........................................ 61
14.1
Introduction .......................................................................................................... 61
TABLE OF FIGURES
Figure 1 SR50AT-CBL ............................................................................................................ 9
Figure 2 SR50A to MD485 wiring ......................................................................................... 16
Figure 3 Beam Angle Clearances .......................................................................................... 28
Figure 4 Distance from edge of transducer housing to grill ................................................... 29
Figure 5 SR50A Mount - mounted parallel to pipe ................................................................ 30
Figure 6 SR50A Mount - mounted perpendicular to pipe ...................................................... 30
Figure 7 SR50A - mounted using Nurail and C2151 mounting stem ..................................... 31
Figure 8 Disconnect cable from sensor ................................................................................... 33
Figure 9 Remove 6 screws from the transducer housing ........................................................ 34
Figure 10 Remove transducer housing and disconnect wires ................................................. 35
Figure 11 Location of Desiccant in transducer housing assembly ......................................... 35
Figure 12 Remove and Replace Desiccant ............................................................................. 36
Figure 13 Remove the 2 flat philips screws to expose the PCB ............................................ 36
