PWS100 Present Weather Sensor - Campbell Scientific

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Section 7. Operation 7.4.1.3 Message Field 10 To 19 Fixed Messages No fixed messages have been defined yet. The user cannot change the fixed messages. 7.4.1.4 Message Field 20 Visibility Range (m) This field will output the average visibility range (m) calculated over the Message_Interval defined. 7.4.1.5 Message Field 21 Present Weather Code (WMO) This field will output the Present Weather Code (WMO) calculated over the Message_Interval defined. 7.4.1.6 Message Field 22 Present Weather Code (METAR) This field will output the Present Weather Code (METAR) calculated over the Message_Interval defined. 7.4.1.7 Message Field 23 Present Weather Code (NWS) This field will output the Present Weather Code (NWS) calculated over the Message_Interval defined. 7.4.1.8 Message Field 24 Alarms This field will output the Alarms. The alarms are output as a string of 16 ‘0’s and ‘1’s delimited with spaces, for example 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1. Each alarm has the following definition starting from the left hand side: 1. Visibility range less than alarm 1 trigger point set by user. The factory default is 5 km. 2. Visibility range less than alarm 2 trigger point set by user. The factory default is 1.5 km. 3. Visibility range less than alarm 3 trigger point set by user. The factory default is 0.5 km. 4. Laser drive current greater than 80 mA. This may indicate the laser is failing or recalibration is required. 5. Power supply voltage for dsp less than 11 V. 6. Laser window needs cleaning. There is sufficient build up on the window that if not cleaned could reduce accuracy. 7. Upper detector window needs cleaning. There is sufficient build up on the window that if not cleaned could reduce accuracy. 8. Lower detector window needs cleaning. There is sufficient build up on the window that if not cleaned could reduce accuracy. 9. DC voltage of laser dirty window detector greater than 1.5 V. This can be caused by sun directly shining into lens or a pws fault. 7-10
Section 7. Operation 10. DC voltage of upper detector greater than 1.5 V. This can be caused by sun directly shining into lens or a pws fault. 11. DC voltage of lower detector greater than 1.5 V. This can be caused by sun directly shining into lens or a pws fault. 12. Particle processor is unable to process all particles due to limited time and buffer resources. Particles are missed and data could be inaccurate. This alarm may activate when there are 120 or more particles per second going through the volume, sustained for a period that fills all available space in the buffers. 13. Particle processor lags real time by more than 5% of the user requested statistics interval. 14. Particle stripper is unable to process all particles due to limited time and buffer resources. Particles are missed and data will be inaccurate. This alarm may activate if there are more than ~150 particles per second going through the volume. 15. Reserved for future use. Outputs ‘0’. 16. Reserved for future use. Outputs ‘0’. 7.4.1.9 Message Field 25 Fault Status of the PWS100 This field will output the fault status of the PWS100. The value output is from 0 to 4. 0 = no fault, 1 = Possible degraded performance, 2 = Degraded performance, 3 = Maintenance required, 4 = Laser fault. 7.4.1.10 Message Field 30 External Sensor Temperature, RH% and Wetbulb This field will output the averaged temperature (°C), sampled relative humidity and averaged wetbulb temperature (°C) calculated over the Message_Interval defined. 7.4.1.11 Message Field 31 External Sensor Maximum and Minimum Temperature This field will output the maximum and minimum temperature (°C) calculated over the Message_Interval defined. 7.4.1.12 Message Field 33 External Sensor Wetness This field will output the sampled wetness (0-100%). 7.4.1.13 Message Field 34 External Sensor Aux This field will output the sampled auxiliary sensor output. Such an auxiliary sensor needs to be defined. 7.4.1.14 Message Field 40 Precipitation Intensity This field will output the precipitation intensity (mm / hour) calculated over the Message_Interval defined. 7-11
Page 1: PWS100 Present Weather Sensor Revis
Page 4 and 5: Assistance Products may not be retu
Page 6 and 7: PWS100 Table of Contents 6.4 Ground
Page 8 and 9: PWS100 Table of Contents 8.3 Additi
Page 10 and 11: PWS100 Table of Contents List of Ta
Page 12 and 13: Section 1. Product Overview 1-2
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Page 16 and 17: Section 3. Initial Inspection 3-2
Page 18 and 19: Section 4. Overview 4-2
Page 20 and 21: Section 5. Specifications 5.3 Optic
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Page 24 and 25: Section 6. Installation In order to
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Page 30 and 31: Section 6. Installation PG9 CABLE G
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Page 44 and 45: Section 7. Operation Message Field
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Section 8. Functional Description 8
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Section 9. Maintenance It is advisa
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Section 10. Troubleshooting 10.2.3
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Section 10. Troubleshooting 10-4
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Appendix A. PWS100 Output Codes Clo
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Appendix A. PWS100 Output Codes Fre
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Appendix A. PWS100 Output Codes Sno
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Appendix A. PWS100 Output Codes How
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Appendix A. PWS100 Output Codes A-1
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Appendix B. Wiring FIGURE B-2. DSP
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Appendix C. Cable Selection WIRING
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Appendix C. Cable Selection WIRING
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Appendix D. Software Flowchart D-2
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Appendix D. Software Flowchart G Po
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Appendix D. Software Flowchart L Sh
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Appendix E. Menu System Map E-2
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Appendix E. Menu System Map E-4
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PWS100 Present Weather Sensor - Campbell Scientific

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