Vaisala WAA151 Installation Manual Page 35
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Chapter 2 ___________________________________________________________Product Overview
VAISALA ________________________________________________________________________ 33
response. The foil heaters integrated in the vane & tail assembly
protect the gauge’s rotating parts against, even in extreme climates.
The transmission of heating power to the WAV252's rotor is
contactless, with no slip rings or brushes. This feature eliminates
sparks and excessive friction or wear.
Power consumption, typically 50 watts, is very low considering the
heating efficiency and the protection against freezing provided.
WAS425A/WAS425AH
0003-009
Figure 16 WAS425A Ultrasonic Wind Sensor
WAS425A and WAS425AH Ultrasonic Wind Sensors determine wind
speed and wind direction. The difference between these sensors is that
model WAS425A is unheated, whereas model WAS425AH has a
built-in heater. WAS425AH uses 36 VDC to power the heater
elements. The elements have a built-in thermostat to switch the
heaters on when the transducer head needs it. The ultrasonic wind
sensor is shown in Figure 16 above. The joint sensor features are:
- Communication with a wide range of data acquisition systems
using:
- Digital output for RS-232 serial data interface
- Analog outputs
- No moving parts
- Power-on self-tests of RAM and ROM
- Contamination and corrosion resistance since exposed surfaces are
stainless steel and anodized aluminum
- Simple alignment to true north.
- INSTALLATION 1
- Table of Contents 3
- CHAPTER 3 5
- CHAPTER 4 5
- List of Figures 7
- List of Tables 9
- GENERAL INFORMATION 11
- ESD Protection 14
- Version Information 14
- Related Manuals 15
- Getting Help 15
- Warranty 16
- PRODUCT OVERVIEW 17
- MAWS301 18
- 0101-011 19
- Product Nomenclature 20
- MAWS Software 22
- Operating Software 22
- Lizard Setup Software 22
- MAWS Terminal 22
- BOX501 Enclosure 23
- 0202-001 24
- QML102 AWS Logger 25
- 0105-002 26
- Memory Expansion Board 27
- (Optional) 27
- Power Supplies 28
- Solar Panels 28
- 0105-005 29
- Backup Battery and Regulator 30
- AC Power Supply (Optional) 31
- Wind Sensors 32
- 0105-012 33
- 0105-013 34
- WAS425A/WAS425AH 35
- Air Temperature and Relative 36
- Humidity Sensor 36
- Pressure Sensor 36
- Precipitation Sensors 37
- 0105-017 38
- 0105-018 39
- Solar Radiation Sensors 40
- 0105-021 41
- 0105-022 42
- 0105-023 42
- 0105-024 43
- 0105-025 43
- Soil Temperature Sensors 44
- 0106-041 45
- Soil Moisture Sensor 46
- Water Level Sensors 46
- 0105-029 47
- 0202-003 48
- Leaf Wetness Sensor 49
- Fuel Moisture Sensor 50
- 0105-032 52
- 9608-041 53
- 0105-033 53
- Communication Devices 54
- Modem DMX501 55
- Satellite Transmitters 56
- 0105-036 57
- 0105-035 58
- 0202-004 58
- GSM Data Modem 59
- Optional Communication 60
- Equipment 60
- Accessories 60
- Surge Arrester 60
- Handheld Terminal 61
- GPS Time Synchronizing Unit 62
- Installation Accessories 62
- Support Arms 63
- Connector Adapters 64
- WHP25 Power Supply 65
- SELECTING LOCATION 67
- Precipitation 68
- Solar Radiation 69
- Soil Temperature 69
- Soil Moisture 69
- Water Level 70
- Placement of QMV101/QMV102 70
- Placement of DCU7110 71
- Snow Level 72
- Fuel Moisture 72
- Weather Sensor 72
- Installation Procedure 76
- Mounting the Sensor Arms 76
- 0202-008 77
- Installing Solar Panel 78
- Installing Sensors 80
- 9901-005 81
- 0202-009 83
- 0002-024 84
- Secondary 86
- 0105-059 86
- 0003-010 87
- 0003-013 89
- 0105-060 91
- 0105-061 92
- 0201-035 93
- 0002-010 93
- 0002-011 94
- 9901-011 95
- 0201-036 95
- 0201-037 96
- 9902-004 96
- 0105-062 97
- 9806-015 98
- 0201-040 100
- 0202-011 101
- 0105-067 101
- 0202-012 102
- 0105-069 103
- 9901-012 104
- 0106-039 105
- 0106-038 105
- 0106-042 106
- 0105-087 107
- 0105-088 108
- 0202-013 109
- 0202-010 111
- 0105-070 113
- 0105-071 113
- 0105-072 113
- 0201-041 115
- Smart Sensors 117
- Communication Modules 117
- 0105-055 118
- 0201-048 120
- 0201-049 121
- 0201-050 121
- 0202-014 122
- 0202-015 123
- 0202-016 124
- 0202-017 125
- 0202-018 126
- 0202-019 127
- 0202-020 128
- 0105-074 129
- 0105-075 129
- 0105-077 130
- 0105-078 130
- 0202-021 131
- 0202-022 132
- 0202-006 133
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