Document Outline

• Revision and Copyright Information
• Warranty
• Assistance
• Table of Contents
• Section 1. Introduction
• Section 2. Cautionary Statements
  • 2.1 Sensor Unit Safety
  • 2.2 Laser Safety
• Section 3. Initial Inspection
• Section 4. Overview
• Section 5. Specifications
  • 5.1 Mechanical Specifications
  • 5.2 Electrical Specifications
  • 5.3 Optical Specifications
    • 5.3.1 Laser Head Specifications
    • 5.3.2 Sensor Head Specifications
  • 5.4 Environmental Specifications
  • 5.5 CS215-PWS Specifications
  • 5.6 Measurement Capabilities and Limitations
    • 5.6.1 Visibility Measurements
    • 5.6.2 Precipitation Measurements
    • 5.6.3 Data Storage and Buffering
• Section 6. Installation
  • 6.1 Location and Orientation
  • 6.2 Unloading and Unpacking
    • 6.2.1 Unpacking Procedure
    • 6.2.2 Storage Information
  • 6.3 Installation Procedures
    • 6.3.1 Assembling the PWS100
    • 6.3.2 Mounting the PWS100
    • 6.3.3 Connecting Cables
    • 6.3.4 Basic Wiring
    • 6.3.5 Desiccant
    • 6.3.6 Communication Options
      • 6.3.6.1 RS-485 Half-duplex mode
    • 6.3.7 Installing Power Supply
    • 6.3.8 Start-Up Testing
    • 6.3.9 Initial Settings
    • 6.3.10 Load Factory Defaults
    • 6.3.11 Lubricating the Enclosure Screws
  • 6.4 Grounding and Lightning Protection
    • 6.4.1 Equipment Grounding
    • 6.4.2 Internal Grounding
    • 6.4.3 Lightning Rod
• Section 7. Operation
  • 7.1 Introduction
  • 7.2 PWS100 Configuration
    • 7.2.1 Using the Present Weather Viewer Program
  • 7.3 Terminal Mode
    • 7.3.1 Using the Help Command
    • 7.3.2 Entering / Exiting the Menu System
    • 7.3.3 Message Polling
  • 7.4 PWS100 Menu System
    • 7.4.1 Top Menu Options 0, 1 and 2 (Message n)
      • 7.4.1.1 Message 0 (the Default Output)
      • 7.4.1.2 Message Field 1 and 2 User Defined Message
      • 7.4.1.3 Message Field 10 To 19 Fixed Messages
      • 7.4.1.4 Message Field 20 Visibility Range (m)
      • 7.4.1.5 Message Field 21 Present Weather Code (WMO)
      • 7.4.1.6 Message Field 22 Present Weather Code (METAR)
      • 7.4.1.7 Message Field 23 Present Weather Code (NWS)
      • 7.4.1.8 Message Field 24 Alarms
      • 7.4.1.9 Message Field 25 Fault Status of the PWS100
      • 7.4.1.10 Message Field 30 External Sensor Temperature, RH% and Wetbulb
      • 7.4.1.11 Message Field 31 External Sensor Maximum and Minimum Temperature
      • 7.4.1.12 Message Field 33 External Sensor Wetness
      • 7.4.1.13 Message Field 34 External Sensor Aux
      • 7.4.1.14 Message Field 40 Precipitation Intensity
      • 7.4.1.15 Message Field 41 Precipitation Accumulation
      • 7.4.1.16 Message Field 42 Drop Size Distribution
      • 7.4.1.17 Message Field 43 Average Velocity (ms-1) and Average Size (mm)
      • 7.4.1.18 Message Field 44 Type Distribution
      • 7.4.1.19 Message Field 45 Size / Velocity Type Map 1 (20 x 20)
      • 7.4.1.20 Message Field 46 Size / Velocity Type Map 2 (32 x 32)
      • 7.4.1.21 Message Field 47 Campbell Scientific Standard Size / Velocity Map (34 x 34)
      • 7.4.1.22 Message Field 48
      • 7.4.1.23 Message Field 49 Visibility (m), 10 minute average
      • 7.4.1.24 Message Field 100 Upper, Lower LED temperature
      • 7.4.1.25 Message Field 101 Upper, Lower Detector Temperature
      • 7.4.1.26 Message Field 102 Laser Hood, Laser Temperature and Laser Drive Current
      • 7.4.1.27 Message Field 103 Laser, Upper, Lower Detector DC Voltage Offsets
      • 7.4.1.28 Message Field 104 Laser, Upper and Lower Dirty Window Detector
      • 7.4.1.29 Message Field 105 DSP PSU Voltage, Hood and Dew Heater % Duty
      • 7.4.1.30 Message Field 106 Upper, Lower Detector Differential Voltage, Calibrated Visibility mV
      • 7.4.1.31 Message Field 150 Serial Number, Operating System and Hardware Version
      • 7.4.1.32 Message Field 151 Day Count, Hours, Minutes, Seconds
      • 7.4.1.33 Message Field 152 Product Name
      • 7.4.1.34 Message Field 153 Statistics Period
      • 7.4.1.35 Message Field 154 Watchdog Count, Maximum Particles Per Second, Particles Not Processed, Time Lag
      • 7.4.1.36 Message Field 155 Processing Statistics
      • 7.4.1.37 Message Field 156 Year, Month, Day
      • 7.4.1.38 Message Field 157 Hours, Minutes, Seconds
      • 7.4.1.39 Message Field 158 Averaged Corrected Visibility Voltage and Averaged Upper Head Voltage
      • 7.4.1.40 Message Field 159 Output a CCITT CRC-16 (checksum) of the message
      • 7.4.1.41 Message Field Error
    • 7.4.2 Top Menu Option 3 (Set Time and Date)
    • 7.4.3 Top Menu Option 4 (Configuration)
    • 7.4.4 Top Menu Option 5 (Password)
    • 7.4.5 Top Menu Option 6 (Weather and Alarm Parameters)
    • 7.4.6 Top Menu Option 7 (Terminal)
    • 7.4.7 Top Menu Option 8 (Info)
    • 7.4.8 Top Menu Option 9 (Done)
  • 7.5 Message Related Commands
    • 7.5.1 Automatic and Polled Message Sending
    • 7.5.2 Retrieving Historical Data
    • 7.5.3 Viewing Data Output on the Command Line
    • 7.5.4 Collection of Data in Text File Format
  • 7.6 Weather Related Commands
    • 7.6.1 Setting and Viewing Weather Parameters
    • 7.6.2 Receiving Data from Remote Sensors
  • 7.7 System Configuration Commands
    • 7.7.1 Setting System Parameters
  • 7.8 Maintenance Commands
    • 7.8.1 Loading a New OS
    • 7.8.2 Running a Diagnostic Test
    • 7.8.3 Running the Calibration
    • 7.8.4 Rotating the Calibration Disc
  • 7.9 Other Commands
    • 7.9.1 Setting the Time and Date
    • 7.9.2 Resetting the System
  • 7.10 Connecting the PWS100 to a Datalogger
    • 7.10.1 Connections
    • 7.10.2 Example Logger Programs
• Section 8. Functional Description
  • 8.1 General
  • 8.2 Optical Measurement
    • 8.2.1 Optical Arrangement
  • 8.3 Additional Sensor Connections
    • 8.3.1 Using a CS215-PWS on the PWS100
    • 8.3.2 Using Other Sensors on the PWS100
  • 8.4 PWS100 Control Unit
  • 8.5 Measurement Signal Processing
  • 8.6 Algorithm Description
    • 8.6.1 Detecting and Classifying Precipitation
    • 8.6.2 Precipitation Intensity
    • 8.6.3 Precipitation Accumulation
    • 8.6.4 Present Weather
      • 8.6.4.1 Precipitation Types
      • 8.6.4.2 Visibility Types
      • 8.6.4.3 Weather Classes
      • 8.6.4.4 Weather Code Selection
    • 8.6.5 Visibility
  • 8.7 Applications
  • 8.8 Internal Monitoring
• Section 9. Maintenance
  • 9.1 General
  • 9.2 Cleaning
  • 9.3 Calibration
• Section 10. Troubleshooting
  • 10.1 Introduction
  • 10.2 Possible Problems
    • 10.2.1 No response from PWS100
    • 10.2.2 PWS100 responds but no data output given
    • 10.2.3 Ice has formed in the end of the hoods
    • 10.2.4 The visibility output is clearly in error
    • 10.2.5 The sensor does not detect particles during a precipitation event
    • 10.2.6 The sensor detects particles when there are none present
    • 10.2.7 The OS update did not work
• Appendix A. PWS100 Output Codes
• Appendix B. Wiring
• Appendix C. Cable Selection
  • C.1 Power Cable
  • C.2 Communication Cable
• Appendix D. Software Flowchart
• Appendix E. Menu System Map
• Campbell Scientific Contact Information