Vaisala WINDCAP WS425 Guide de l'utilisateur Page 69
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Chapter 5 ______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 69
CHAPTER 5
MAINTENANCE
This chapter provides you with general maintenance information.
Visual Inspection of WS425 Ultrasonic Wind
Sensor
WS425 Ultrasonic Wind Sensor is a very reliable and rugged sensor. It
has been wind tunnel tested to over 175 knots for mechanical integrity.
However, the transducers are constructed of ceramic material and can be
damaged by dropping or hitting the transducers. Likewise, applying
enough force to bend the transducer arms will render the anemometer
inoperative.
The wind sensor should be kept in its protective foam shipping container
until the time for the installation on the wind mast or tower. The verifier
should be placed over the sensor when the sensor is installed on the
tower. This provides protection to the transducers and validates that the
mechanical spacing of the transducers is within specifications.
Some cautions and inspection criteria are listed below:
1. Do not rotate the transducers. Rotating the transducers will destroy
the array of the ultrasonic wind sensor. A soldering spot can be
seen on each ceramic transducer. The soldering spots on the
ceramic transducer must be oriented outside the array. For the
correct alignment, see Figure 13 on page 70. Do not rotate the
transducer if the soldering spot is not in the correct location.
Replace the wind sensor.
2. Do not pull the transducers. Pulling the transducers will destroy the
array of the ultrasonic wind sensor. The black RTV sealant can be
seen between the bottom of each transducer and the transducer
mounting arm. The RTV sealant must be free of damage and it
must provide a good seal between the transducer and the transducer
mounting arm. If this seal is damaged, water may enter the wind
sensor.
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 4 4
- CHAPTER 5 5
- CHAPTER 6 5
- CHAPTER 7 5
- APPENDIX A 5
- List of Figures 6
- List of Tables 6
- GENERAL INFORMATION 7
- Version Information 8
- Feedback 8
- Table 3 Ordering Codes 9
- ESD Protection 11
- Regulatory Compliances 12
- Included) 13
- Trademarks 14
- License Agreement 14
- Warranty 14
- PRODUCT OVERVIEW 15
- Sensor Operating Modes 16
- Sensor Features 17
- Direction 18
- Wind Direction Coasting 19
- INSTALLATION 21
- Factory Settings 22
- RS-485 for Europe 23
- 0311-011 24
- 0212-045 25
- Mounting 26
- Alignment 27
- 0212-048 28
- 0208-025 29
- 0208-024 30
- Connections 31
- 0212-041 32
- Powering 33
- OPERATION 35
- 0212-039 36
- 0212-038 36
- Wind Direction 37
- Missing Readings 37
- Serial Mode 38
- Configuration Menu 39
- Configuration Commands 40
- Handar RS-232 41
- Identify Command I 41
- Measurement Command Wx 41
- NMEA Standard 43
- NMEA Extended Message 44
- WAT11 Message 46
- Wind Speed Units 47
- Average Interval 47
- Output Interval 48
- Sensor ID Character 48
- Head Orientation 49
- Bit Rate 49
- Data Bits 50
- Save Configuration 50
- Zero Speed Calibration 50
- SDI-12 Protocol 51
- Serial Data Line 52
- Voltage Transitions 52
- Impedance 52
- Two Different Submodes 54
- Address Query Command (?!) 56
- Send Data Command (aD0!) 58
- Start Verification (aV!) 61
- Supported by WS425 62
- Check Current Submode (aX?!) 63
- SDI-12 TIMING 66
- MAINTENANCE 69
- 0506-020 70
- Periodic Testing 71
- Figure 14 Verifier 72
- TROUBLESHOOTING 73
- Terminal Connection to WS425 75
- Technical Support 76
- Return Instructions 76
- Vaisala Service Centers 77
- TECHNICAL DATA 79
- DRAWINGS 81
- 0301-012 82
- 0301-013 83
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