iii
6.10 Relay Outputs.............................................................................................78
6.11 Sensor Remote Self-Test Capabilities........................................................79
6.12 SWS Sensors –external dimensions ..........................................................80
7INDEX....................................................................................................................81
LIST OF FIGURES
Figure 1-1 SWS-200 in packing................................................................................2
Figure 1-2 Cable Glands............................................................................................3
Figure 1-3 Power and signal connections..................................................................4
Figure 1-4 Location of J7, RS232/422/485 select.....................................................6
Figure 1-5 Relay connections. Relay contacts are rated 2A, 250V AC. ..................7
Figure 1-6 ALS-2 connecting system........................................................................9
Figure 1-7 SWS-050 and SWS-100 Orientation.....................................................26
Figure 1-8 SWS-200 and SWS-250 Orientation.....................................................26
Figure 1-9 U-Bolt Mounting Method......................................................................27
Figure 4-1 Hood Heater...........................................................................................48
Figure 4-2 Transmitter hood with white card..........................................................51
Figure 5-1 Assembly of calibration reference plaque .............................................55
Figure 6-1 SWS-050 and SWS-100 Capabilities ....................................................61
Figure 6-2 SWS-200 and SWS-250 Capabilities ....................................................62
Figure 6-3 Precipitation Recognition Matrix ..........................................................73
Figure 6-4 External Dimensions of SWS-sensors (Dimensions in mm)................80
List Of Tables
Table 1-1 Pin connections for power supply.............................................................5
Table 1-2 Pin connections for operating in RS232 interface mode...........................6
Table 1-3 Pin connections for operating in RS422/RS485 interface mode...............6
Table 1-4 Connections for 0-10 V analogue output..................................................8
Table 1-5 Connections for 0/4-20mA analogue output.............................................8
Table 1-6 Options Word (lower byte).....................................................................12
Table 1-7 Operating State Word (lower byte).........................................................14
Table 1-8 Baud-Rate Configuration........................................................................17
Table 1-9 Relay configuration.................................................................................23
Table 1-10 Sensor height above ground..................................................................25
Table 1-11 Remote Self-test and Monitoring check fields......................................30
Table 2-1 SWS-050 Operating data message format ..............................................33
Table 2-2 SWS-100 and SWS-200 Operating data message format.......................35
Table 2-3 SWS-250 Operating data message format ..............................................38
Table 2-4 METAR Codes........................................................................................40
Table 2-5 Message Extension for ALS-2................................................................41
Table 3-1 Commands for SWS series sensors.........................................................44
Table 3-2 Command R? Response..........................................................................45
Table 3-3 Command T? Response ..........................................................................46
Table 3-4 Sensor Responses....................................................................................46
Table 6-1 Visibility Measurement Capabilities.......................................................66
Table 6-2 Precipitation Measurement Limits..........................................................67
Table 6-3 US Precipitation Intensity Definitions....................................................68
Table 6-4 SWS-100 WMO Codes...........................................................................69
Table 6-5 SWS-200 WMO Codes...........................................................................69
Table 6-6 SWS-250 WMO and METAR Codes.....................................................71
Table 6-6 Sensor Specifications..............................................................................75
Table 6-7 Instrument Characteristics.......................................................................76
Table 6-8 Digital Communication Interface Specifications....................................77
Table 6-9 Analog Output Specification...................................................................78
Table 6-10 Relay Specification...............................................................................78
