Page 2 English versions are applicable, not the translations. The contents of this manual are subject to change without prior notice. This manual does not create any legally binding obligations for Vaisala towards customers or end users. All legally binding obligations and agreements are included exclusively in the applicable supply contract or the General Conditions of Sale and General Conditions of Service of Vaisala.
Page 3: Table Of Contents
Operating Principle ..............35 Coordinate Systems: Vector and Polar Calculations ..38 Wind Speed and Direction Averaging ........40 Scalar Averaging ..............40 Wind Direction Coasting ..........41 Vector Averaging ..............41 Measurement Methods ............42 Continuous Measurement ........... 42 VAISALA _________________________________________________________________________ 1...
Page 4 User's Guide ______________________________________________________________________ Wind Measurement on Request .......... 42 Host System Connections and Interfaces ......43 Serial Communication and Analog Output ......45 Serial Communication ............45 Digital Communication Interface .......... 45 Profiles ................. 46 Protocols ................47 Measurement and Configuration Modes ......47 Serial Interface Timing ............
Page 5 WMT700 Data Message 21 ......... 129 WMT700 Data Message 22 ......... 129 WMT700 Data Message 23 ......... 130 WMT700 Data Message 24 ......... 131 WMT700 Data Message 25 ......... 132 ROSA - MES12 Data Message ........133 VAISALA _________________________________________________________________________ 3...
Page 6 User's Guide ______________________________________________________________________ Missing Readings .............. 133 Error Indication ..............134 Measurement Mode Commands ......... 135 WMT700 Profile Commands ..........135 MEAS — Start Measurement ........136 OPEN — Enter Configuration Mode ......136 POLL — Poll Data ............137 SLEEP —...
Page 7 TECHNICAL DATA ..................189 Dimensions ................193 APPENDIX A COMPLETE COMMAND SET FOR WMT700 ........... 195 APPENDIX B TYPICAL SYSTEM ENVIRONMENTS ............197 APPENDIX C DEFAULT SETTINGS FOR DIFFERENT COMMUNICATION PROFILES ....................201 APPENDIX D CONFIGURATION PARAMETERS ............205 VAISALA _________________________________________________________________________ 5...
Page 8 User's Guide ______________________________________________________________________ APPENDIX E WMT700 NMEA MWV PROFILE ..............209 Configurable Parameters ........... 210 WMT700 NMEA MWV Commands ........211 WMT700 NMEA MWV Data Message ......212 Missing Readings ............212 APPENDIX F ACCESSORIES ..................213 APPENDIX G CERTIFICATES ..................217 6 ____________________________________________________________________ M211095EN-E...
Page 9 Mounting Adapter for FIX30, WS425FIX60 (Left), and Mounting Adapter for FIX70 (Right) ......... 95 Figure 47 WS425 Adapter Cable .............. 96 Figure 48 Wind Speed Frequency Analog Output with WS425 Cable and Adapter Cable for Analog Frequency Output ..141 VAISALA _________________________________________________________________________ 7...
Page 10 User's Guide ______________________________________________________________________ Figure 49 Wind Speed Voltage Analog Output with WS425 Cable and Adapter Cable for Analog Voltage Output ....... 142 Figure 50 Wind Direction Voltage Output with WS425 Cable and Adapter Cable ................. 143 Figure 51 Testing WMT700 with WM Verifier ......... 182 Figure 52 WMT700 Dimensions in Millimeters ........
Page 11 Required Parameters for WS425 Analog Output Operation Mode ..............140 Table 43 Configurable Parameters for WS425 F/G ASOS Profile ..148 Table 44 WS425 F/G ASOS Commands ..........149 Table 45 WS425 F/G ASOS Data Message ......... 152 VAISALA _________________________________________________________________________ 9...
Page 12 User's Guide ______________________________________________________________________ Table 46 Configurable Parameters for WS425 A/B NMEA Standard Profile ..............154 Table 47 Configurable Parameters for WS425 A/B NMEA Extended Profile ..............156 Table 48 Checksum Table ..............157 Table 49 Configurable Parameters for WS425 A/B ASCII Profile ..159 Table 50 WS425 A/B ASCII Commands ..........
Page 13: General Information
This chapter provides general notes for the manual and the WMT700 series. About This Manual This manual provides information for installing, operating, and ® maintaining Vaisala WINDCAP Ultrasonic Wind Sensors WMT701, WMT702, and WMT703, commonly referred to as WMT700. Contents of This Manual...
Page 14: Version Information
WMT700. Updated Ordering Options and Accessories. M211095EN-D Previous version. M211095EN-A First version of this manual. Related Manuals Table 2 Related Manuals Manual Code Manual Name M211218EN Vaisala WINDCAP© Ultrasonic Wind Sensor Series WMT700 Quick Reference Guide 12 ___________________________________________________________________ M211095EN-E...
Page 15: Documentation Conventions
If ice or snow accumulates on WMT700 or the mast, it can fall and cause injury to persons below. WARNING Some WMT700 product versions provide heating for transducers and/or array arms. To avoid injury, do not touch the heated parts of the wind sensor when the heating is enabled. VAISALA ________________________________________________________________________ 13...
Page 16: Recycling
User's Guide ______________________________________________________________________ WARNING Make sure that you connect only de-energized wires. WARNING Using a long cable between different units (sensors, transmitters, power supplies, and displays) can cause a lethal surge voltage, if a lightning strike occurs in the vicinity. Always apply proper grounding procedures and follow the requirements of the local Electrical Code.
Page 17: Regulatory Compliances
EN 61326-1:2006 (Electrical equipment for measurement, control and laboratory use - EMC requirements for use in industrial locations) and EN 60945:2002 (Maritime Navigation and Radiocommunication Equipment and Systems - General Requirements - Methods of Testing and Required Test Results). VAISALA ________________________________________________________________________ 15...
Page 18: Trademarks
Appendix G on page 217. Trademarks The WMT700 series wind sensors are based on the advanced, ® patented Vaisala WINDCAP wind measurement technology that ensures accurate results in all wind directions. The effects of temperature, humidity, and pressure are also fully compensated.
Page 19: Chapter 2 Product Overview
Vaisala WINDCAP Ultrasonic Wind Sensor WMT700 measures wind speed and direction, and sends the measurement results to data acquisition systems. WMT700 forms part of the Vaisala weather measurement offering suitable for systems and stand- alone installations. The WMT700 series consists of three product types with different measurement ranges: WMT701, WMT702, and WMT703.
Page 20: Figure 1 Wmt700 Wind Sensor
User's Guide ______________________________________________________________________ WMT700 is configured at the factory according to the customer's order, and it is ready for operation directly after the installation. If required, the user also has a wide range of configuration options for the wind sensor and the measurement settings. WMT700 can be equipped with accessories to tailor the instrument to match different user-specific needs.
Page 21: Figure 2 Wmt700 Wind Sensor From Below
The following numbers refer to Figure 2 above: 1 = Waterproof vent 2 = Mounting adapter screw (3 pcs; use Allen key 4 mm) 3 = 17-pin M23 male connector NOTE Do not open the sensor. There are no user-serviceable parts inside. VAISALA ________________________________________________________________________ 19...
Page 22: Figure 3 Fix70 Mounting Kit
User's Guide ______________________________________________________________________ 1104-064 Figure 3 FIX70 Mounting Kit The following numbers refer to Figure 3 above: FIX70 consists of : 1 = Fix body 2 = Removable mast guide with mounting hardware 3 = Mounting hardware (M6 nuts, washers) 4 = U bolts for ø30 mm mast (2 pcs) 5 = U bolts for ø60 mm mast (2 pcs) 20 ___________________________________________________________________ M211095EN-E...
Page 23: Figure 5 Wmt70Fix60-Pom
Chapter 2 ___________________________________________________________ Product Overview 1305-001 Figure 4 WS425FIX60-POM The following numbers refer to Figure 4 above: 1 = Clamp 2 = Label 1305-002 Figure 5 WMT70FIX60-POM The following numbers refer to Figure 5 above: 1 = Clamp 2 = Label VAISALA________________________________________________________________________ 21...
Page 24: Figure 6 Ws425Fix60-Rst And Ws425Fix60
User's Guide ______________________________________________________________________ 1305-003 Figure 6 WS425FIX60-RST and WS425FIX60 The following numbers refer to Figure 6 above: 1 = Screw hole 2 = Label 3 = Clamp 1305-004 Figure 7 WMT70FIX60-RST The following numbers refer to Figure 7 above: 1 = Screw holes 2 = Label 3 = Clamp 22 ___________________________________________________________________ M211095EN-E...
Page 25: Ordering Options
Note that the temperature range is not connected to heating in any way. If you operate in a demanding environmental climate where ice accumulation is expected, Vaisala recommends that you use a heated sensor; see Option 4 in Table 7 on page 24.
Page 26: Heating
User's Guide ______________________________________________________________________ Heating Ordering option 3, Heating, defines if the sensor is equipped with extra heating for demanding environmental conditions. Option 4 providing full sensor heating is best suited for most demanding environments. Note that power consumption requirement depends on the selected heating option.
Page 27: Digital Communication Profile
Auto send 1/s Digital Communication Units Ordering option 6, Unit Definition for Digital Communication, offers four different digital communication options. Table 10 Digital Communication Options Option Unit Used Meters per second Knots Miles per hour Kilometers per hour VAISALA ________________________________________________________________________ 25...
Page 28: Analog Output Signal For Wind Speed Channel
User's Guide ______________________________________________________________________ Analog Output Signal for Wind Speed Channel Ordering option 7, Analog Output for Wind Speed, can be disabled or factory-configured for 8 different modes. WS425 options are usable and backwards compatible when replacing WS425 sensor with a WMT700 unit. Table 11 Output Configuration Option...
Page 29: Analog Output Signal For Wind Direction Channel
0% of V = 0 degree 100% of V = 360 degree Connection Cables Ordering option 9 defines connection cables. There are several different cables of different lengths for different purposes, as shown in Table 13 on page 28. VAISALA ________________________________________________________________________ 27...
Page 30: Mounting Adapters
User's Guide ______________________________________________________________________ Table 13 Analog Output Configuration Selection Cable type No cables Cable 2 m, cable connector, open leads on one end Cable 10 m, cable connector, open leads on one end MAWS cable 10 m AWS520 cable 10 m. Shield connected to PE pin Adapter cable for WS425 serial Adapter cable for WS425 analog frequency output RS485 cable 2 m, cable connector, open leads on one...
Page 31: Manual
To change the product version characteristics listed in Table 9 on page 25, contact Vaisala Service Center. VAISALA ________________________________________________________________________ 29...
Page 32: Accessories
User's Guide ______________________________________________________________________ Accessories WMT700 can be tailored to your needs with several accessories. The accessories include, for example, mounting adapters for different mast diameters, cables for different host systems and preferred communication types, a bird prevention kit, and a field calibration kit.
Page 33: Bird Cage
Chapter 2 ___________________________________________________________ Product Overview Bird Cage Vaisala recommends using the optional bird cage in areas with large bird populations. The cage is designed to prevent large birds from disturbing the measurement. It has been tested in a wind tunnel with wind speeds of up to 40 m/s without noticeable effects on the wind speed and direction measurement.
Page 34: Wm Verifier
User's Guide ______________________________________________________________________ WM Verifier The optional WM Verifier is a small echo-free chamber for testing the mechanical integrity of WMT700 and performing one- point calibration. The verifier ensures that the array is undamaged and the transducers are parallel to each other. You can perform the verifier test in a laboratory or in the field.
Page 35: Cables
Vaisala Automatic Weather Station MAWS. 229807SP AWS520 cable 10 m, shield connected Used for connecting WMT700 to to PE pin Vaisala Fixed Site Observation System AWS520. 227566SP AWS520 cable 10 m, shield not Used for connecting WMT700 to connected to PE pin Vaisala Fixed Site Observation System AWS520.
Page 36: Cable Tightening Tool
User's Guide ______________________________________________________________________ Cable Tightening Tool WMT700 is shipped with a cable tightening tool (237888SP). When a cable is inserted in the cable tightening tool, it is easier to grip and rotate the cable when connecting it to WMT700. After tightening, the cable tightening tool can be left in place.
Page 37: Functional Description
CHAPTER 3 FUNCTIONAL DESCRIPTION This chapter describes the functionality of WMT700. Operating Principle ® WMT700 uses the Vaisala WINDCAP ultrasonic sensor technology in wind measurement. The sensor has an onboard microcontroller that captures and processes data and communicates over serial interfaces.
Page 38: Figure 11 Ultrasonic Measurement Principle
User's Guide ______________________________________________________________________ 1005-007 Figure 11 Ultrasonic Measurement Principle The following numbers refer to Figure 11 above: 1 = Ultrasonic measurement with zero wind 2 = Impact of tail wind on ultrasonic measurement 3 = Impact of head wind on ultrasonic measurement 36 ___________________________________________________________________ M211095EN-E...
Page 39: Figure 12 Measurement Paths Of Wmt700
Figure 12 below shows the different paths of WMT700 and the vectors provided by the wind sensor: 1104-066 Figure 12 Measurement Paths of WMT700 where 1–6 Measurement paths 1 to 6 of WMT700 Distance between two transducers VAISALA ________________________________________________________________________ 37...
Page 40: Coordinate Systems: Vector And Polar Calculations
User's Guide ______________________________________________________________________ The vectors are calculated as follows: ⋅ ⋅ − (1/A ⋅ ⋅ − (1/A ⋅ ⋅ − (1/A The equation depends on the accurate distance of the measurement path (L). The computed wind speeds are independent of altitude, temperature, and humidity, which are canceled out when the transit times are measured in both directions, although the individual transit times depend on these parameters.
Page 41: Figure 13 Different Wind Speed And Direction Presentations (Direction Offset Is 0)
Chapter 3 _______________________________________________________ Functional Description Figure 13 below shows examples of wind speed and direction presentations. 0212-044 Figure 13 Different Wind Speed and Direction Presentations (Direction Offset Is 0) VAISALA________________________________________________________________________ 39...
Page 42: Wind Speed And Direction Averaging
User's Guide ______________________________________________________________________ Wind Speed and Direction Averaging WMT700 provides average values for wind speed and direction using either scalar or vector averaging. With both methods, the average is determined according to the user-configurable averaging time. The averaging time affects serial communication and analog output similarly.
Page 43: Wind Direction Coasting
If the data acquisition system requests data before the initial averaging time completes, the sensor returns the most recent complete measurement data. VAISALA ________________________________________________________________________ 41...
Page 44: Measurement Methods
User's Guide ______________________________________________________________________ Measurement Methods WMT700 measures wind speed and direction either continuously or for the duration of the user-configurable averaging time. You can select the measurement mode over the serial interface. Continuous Measurement You can set WMT700 to measure wind data continuously until the sensor receives the STOP command.
Page 45: Host System Connections And Interfaces
In a split-supply system there can be a separate backup power supply for the operating power supply. Figure 15 on page 44 shows the main software components and external interfaces of WMT700. VAISALA ________________________________________________________________________ 43...
Page 46: Figure 15 External Interfaces Of Wmt700
User's Guide ______________________________________________________________________ Figure 15 External Interfaces of WMT700 NOTE For examples of typical system environments for WMT700, see Appendix B, Typical System Environments, on page 197. 44 ___________________________________________________________________ M211095EN-E...
Page 47: Serial Communication And Analog Output
- RS-422 (recommended up to 1200 meter distance) - SDI-12 (recommended up to 60 meter) Note that the recommendations depend on communication speed and cable type. In optimized environments even longer distances can be considered. VAISALA ________________________________________________________________________ 45...
Page 48: Profiles
Data Messages on page 127. The ROSA - MES12 profile is intended for connecting WMT700 to the Vaisala ROSA system. The WS425 profiles can be used when upgrading from the WS425 wind sensor to WMT700.
Page 49: Protocols
For a list of all serial commands supported by WMT700 in the configuration and measurement modes, see Appendix A, Complete Command Set for WMT700, on page 195. VAISALA ________________________________________________________________________ 47...
Page 50: Figure 16 Configuration And Measurement Modes
User's Guide ______________________________________________________________________ Figure 16 below shows the configuration and measurement modes of both serial ports provided by WMT700. 1001-111 Figure 16 Configuration and Measurement Modes After power-up, WMT700 is in the measurement mode. To change settings, use the OPEN command to enter the configuration mode.
Page 51: Serial Interface Timing
The response delay t2 is user-configurable. In the configuration mode, some commands have a longer response delay. - SDI-12 interface: The timing is compliant with the SDI-12 standard. For the complete SDI-12 standard text, see the SDI-12 website at www.sdi-12.org. VAISALA ________________________________________________________________________ 49...
Page 52: Analog Output
User's Guide ______________________________________________________________________ Analog Output Analog outputs are either enabled or disabled, and the output settings are preconfigured at the factory according to your order. In analog output operation WMT700 takes measurements according to the configured averaging time and synthesizes the analog outputs of wind speed and wind direction with an update interval of 0.25 seconds.
Page 53: Figure 18 Frequency Output
Chapter 3 _______________________________________________________ Functional Description 1307-019 Figure 18 Frequency Output VAISALA________________________________________________________________________ 51...
Page 54: Analog Output Scaling
User's Guide ______________________________________________________________________ Analog Output Scaling You can specify the transfer function between measured values and output analog values. You can select the analog output type as well as the gain and offset used in the transfer function. For information on the parameters, see Appendix D, Configuration Parameters, on page 205.
Page 55: Table 20 Common Transfer Function Settings For Aout1 (Ws)
= y0 + k×s where o = Produced analog output (V, A, Hz, 100%) = Measured wind speed or direction (in m/s or °) k = Selected gain value y0 = Selected offset value VAISALA ________________________________________________________________________ 53...
Page 56: Limitations For Output Signals
User's Guide ______________________________________________________________________ Example 1 - Output mode: voltage - Offset: 0.0 - Gain: 0.1 With the above settings, the analog output voltage range is from 0 V (0 m/s) to 7.5 V (75 m/s). When the measured wind speed is 10 m/s, the output voltage is 1.0 V.
Page 57: Missing Readings And Error Indication
To set analog output 1 error indication in current mode to 2 mA, set the analog output error value to 0.002. Enter the following command: S aout1err,0.002 For more information, see section Appendix D, Configuration Parameters, on page 205. VAISALA ________________________________________________________________________ 55...
Page 58 User's Guide ______________________________________________________________________ This page intentionally left blank. 56 ___________________________________________________________________ M211095EN-E...
Page 59: Chapter 4 Installation
- Do not install WMT700 in the vicinity of a magnetic compass. The product is magnetically inert, but the compass-safe distance is not measured. - Do not place WMT700 directly in front of a radar. - Do not install WMT700 next to a powerful RF-transmitter antenna. VAISALA ________________________________________________________________________ 57...
Page 60: Selecting Installation Location
User's Guide ______________________________________________________________________ Selecting Installation Location Finding a suitable site for WMT700 is important for getting representative ambient measurements. Select a site that represents the general area of interest. Follow the WMO Guide to Meteorological Instruments and Methods of Observation WMO- No.
Page 61: Figure 19 Recommended Location In Open Area
Recommended Location in Open Area where h = Height of a building or other high structure = Distance from a building or other high structure y = Distance from the vertical mast z = Diameter of the vertical mast VAISALA ________________________________________________________________________ 59...
Page 62: Figure 20 Recommended Mast Length On Top Of Building
User's Guide ______________________________________________________________________ 1005-001 Figure 20 Recommended Mast Length on Top of Building where h = Recommended minimum height for the vertical mast H = Height of the building W = Diagonal of the building WARNING To protect personnel (and the wind sensor), install a lightning rod with the tip at least one meter above WMT700.
Page 63: Figure 21 Minimum Distance Between Two Wmt700 Devices Installed At Same Height
Chapter 4 ________________________________________________________________ Installation Figure 21 Minimum Distance between Two WMT700 Devices Installed at Same Height VAISALA ________________________________________________________________________ 61...
Page 64: Installation Procedure
User's Guide ______________________________________________________________________ Installation Procedure At the measurement site, you need to mount, align, and connect WMT700 to the power source and data acquisition system. You can install the optional bird cage after the wind sensor is mounted and the transportation damper is removed from the sensor.
Page 65: Mounting
WMT700. Figure 23 below shows the damper protecting the array. Retain all original packaging in case you have to return WMT700 to Vaisala Service Center for maintenance purposes. You can uninstall WMT700 by performing the steps of the mounting procedure in reverse order.
Page 66: Mounting On Vertical Pole Mast
User's Guide ______________________________________________________________________ Mounting on Vertical Pole Mast When mounting WMT700 on a vertical pole mast, you can place it either on the side or on top of the mast. When selecting the mounting position, take into account the other equipment installed on the mast (for instance, lightning rods) and how the cable has been routed (outside or inside the mast).
Page 67: Figure 25 Attaching Connector To Wmt700
Chapter 4 ________________________________________________________________ Installation 1306-140 Figure 25 Attaching Connector to WMT700 NOTE You do not need to remove the cable tightening tool after tightening the connector; you can leave it in place. Hold the wind sensor from the enclosure and slide the sensor into the mounting kit.
Page 68: Figure 26 Wmt700 On Side Of Pole Mast
User's Guide ______________________________________________________________________ NOTE When installing WMT700 to the side of a mast, make sure that the mounting kit is positioned at the top level of the mast. See Figure 26 below. 1006-077 Figure 26 WMT700 on Side of Pole Mast The following numbers refer to Figure 26 above: FIX70 mounting kit WMT700 wind sensor...
Page 69: Figure 27 Wmt700 On Top Of Pole Mast
1006-078 Figure 27 WMT700 on Top of Pole Mast The following numbers refer to Figure 27 above: WMT700 wind sensor Mounting screw in final position North arrow U-bolt and nut (M8DIN934-A4) in horizontal slot FIX70 mounting kit VAISALA ________________________________________________________________________ 67...
Page 70: Mounting On Horizontal Cross Arm
User's Guide ______________________________________________________________________ Mounting on Horizontal Cross Arm When mounting WMT700 on a cross arm, the wind sensor can be placed with the array facing up or down. Mounting WMT700 with the array facing down provides additional protection against the accumulation of snow and interference from birds. The adapter drains located at the bottom of WMT700 prevent water from accumulating inside the mounting adapter.
Page 71: Figure 28 Wmt700 On Cross Arm With Array Facing Up
WMT700 on Cross Arm with Array Facing Up The following numbers refer to Figure 28 above: WMT700 wind sensor Mounting adapter FIX70 mounting kit Mounting screw in final position U-bolt and nut (M8DIN934-A4) in vertical slot North arrow VAISALA ________________________________________________________________________ 69...
Page 72: Figure 29 Wmt700 On Cross Arm With Array Facing Down
User's Guide ______________________________________________________________________ 1006-080 Figure 29 WMT700 on Cross Arm with Array Facing Down The following numbers refer to Figure 29 above: FIX70 mounting kit WMT700 wind sensor 70 ___________________________________________________________________ M211095EN-E...
Page 73: Figure 30 Tightening Connector With Cable Tightening Tool
Chapter 4 ________________________________________________________________ Installation The recommended way to tighten the connector is to use the cable tightening tool shipped with your WMT700. The ribbed part of the tool offers a better grip of the cable when tightening the connector. Insert the cable in the cable tightening tool as shown in Figure 30 below.
Page 74: Figure 31 Tightening Connector Without Cable Tightening Tool
User's Guide ______________________________________________________________________ You can tighten the connector without the cable tightening tool by rotating the ribbed part of the connector by hand. However, do not use tools when tightening the connector. 1103-054 Figure 31 Tightening Connector without Cable Tightening Tool The following number refers to Figure 31 above: 1 = Tighten the connector by rotating the ribbed part of the connector...
Page 75: Checklist For Connection Cables
Always apply proper grounding procedures and follow the requirements of the local Electrical Code. WARNING Do not install WMT700 when there is a risk of thunderstorm or lightning activity in the area. VAISALA ________________________________________________________________________ 73...
Page 76: Alignment
User's Guide ______________________________________________________________________ Alignment WMT700 is permanently marked with the letter N and a north arrow. You must align WMT700 in such a way that the arrow points to the north. Misaligning WMT700 causes a wind direction offset error in the measurement results, as shown in Figure 33 on page 75.
Page 77: Alignment Tuning
To install the bird cage, you need to position the bird cage on top of the wind sensor and secure the kit with two straps. You can order the cage as an accessory from Vaisala; see Table 62 on page 192. The required straps are provided with the bird cage.
Page 78: Figure 34 Bird Cage And Bird Cage Straps
User's Guide ______________________________________________________________________ To install the optional bird cage: Unpack the bird cage and the bird cage straps. Position the bird cage on top of the wind sensor and press the kit down until the three hooks are in contact with the transducer arms.
Page 79: Wiring
Ready-made cables are available for use with Vaisala MAWS and AWS520 systems. These cables have connectors on both ends. There is also a retrofit cable for Vaisala ROSA system in case analog output has been used with WS425. Vaisala provides open-lead cables for connections to other host...
Page 80: Cable 2 M, Cable 10 M, Cable 15 M, And Cable 26 M
User's Guide ______________________________________________________________________ Cable 2 m, Cable 10 m, Cable 15 m, and Cable 26 m Table 22 below shows how to connect Cable 2 m (227567SP), Cable 10 m (227568SP), Cable 15 m (237890SP), and Cable 26 m (237889SP). Table 22 Connecting Cable 2 m (227567SP), Cable 10 m (227568SP), Cable 15 m (237890SP),...
Page 81: Rs485 For Com2 With Cable 2 M And 10 M
To ensure proper operation, verify the polarity of the signals when using the device on the bus with signals named as A/B. Opposite polarity causes data inversion on the bus, but it does not damage the device. VAISALA ________________________________________________________________________ 79...
Page 82: Rs485 Cable 2 M And Rs485 Cable 10 M
User's Guide ______________________________________________________________________ RS485 Cable 2 m and RS485 Cable 10 m RS485 Cable 2 m and RS485 Cable 10 m are designed for the standard connection: operating power, heater power, and RS485. The two-wire RS485 loopback connections, as shown in Table 24 below, are preconnected inside the cable.
Page 83: Connector Signals
COM1 (Service Port) RS-485, B COM1 and COM2 Communication Ports Ground Operating Power Supply Ground Analog Output Ground Analog Output AOUT1, Wind Speed COM2 COM1 RS-485+ (Service port) Reference Input for AOUT2 (simulated potentiometer) Shield Enclosure Ground VAISALA ________________________________________________________________________ 81...
Page 84: Heating
User's Guide ______________________________________________________________________ Heating WMT700 can include a heating functionality that ensures proper operation in cold environmental conditions or in cases where snow and ice build-up is possible. In addition to the standard non-heated version, WMT700 can be preconfigured at the factory according to your order: - Heating for the transducers only - Heating for both transducers and array arms - Heating for body, transducers, and array arms...
Page 85: Heated Transducers And Arms
WMT700 is 350 W and the average heating power is 250 W in harsh weather conditions. The inner temperature of the unit is measured continuously. If the inner temperature starts rising, body heating power automatically reduces to retain the optimum inner temperature of WMT700. VAISALA ________________________________________________________________________ 83...
Page 86: Powering
User's Guide ______________________________________________________________________ Powering WMT700 has separate power supply inputs for operating and heating power. The inputs are usually connected to the same 24 VDC power supply unit, but special applications such as battery operation or battery back-up may require separate supplies. The operating power has one supply terminal and one ground terminal, while the heating power has two supply terminals and two ground terminals allowing a higher supply current.
Page 87: Figure 37 Wiring Of Non-Heated Wmt700 Versions
Chapter 4 ________________________________________________________________ Installation Figure 37 below shows the wiring of non-heated WMT700 versions. 1301-017 Figure 37 Wiring of Non-heated WMT700 Versions NOTE In maritime environments, the normal input voltage ranges are: operating voltage 10 … 30 VDC (-10% … +30%) and heating voltage 24 …...
Page 88: Figure 38 Operating Supply Current Consumption
User's Guide ______________________________________________________________________ Figure 38 and Figure 39 below illustrate WMT700 Operating Supply Current Consumption and Operating Supply Power Consumption. 1104-054 Figure 38 Operating Supply Current Consumption 1104-055 Figure 39 Operating Supply Power Consumption 86 ___________________________________________________________________ M211095EN-E...
Page 89: Heating Power
0.5 mm2/AWG20 24V 400 W 28 V 400 W 1 mm2/AWG17 28V 400 W 30 V 400 W 32 V 400 W ** 1.5 mm2/AWG15 - 30 V 400 W * Vaisala standard connection cable. ** Not for maritime use. VAISALA ________________________________________________________________________ 87...
Page 90: Figure 40 Wiring Of Heated Wmt700 Versions, Part 1
User's Guide ______________________________________________________________________ Figure 40 and Figure 41 below illustrate the wiring of heated WMT700 instruments. 1301-018 Figure 40 Wiring of Heated WMT700 Versions, Part 1 Note that when using separate power supplies for operating and heating, the minus (-) terminals of the power supplies are connected together by an additional wire.
Page 91: Upgrading From Ws425 To Wmt700
Do not install the wind sensor above the top of the lightning protection rod. WARNING Do not install WMT700 when there is a risk of thunderstorm or lightning activity in the area. VAISALA ________________________________________________________________________ 89...
Page 92: Mounting With Ws425 Mounting Kit
User's Guide ______________________________________________________________________ When handling WMT700, do not rotate, pull, strike, bend, scrape, or CAUTION touch the transducers with sharp objects. Any impact on the wind sensor array damages the device. NOTE Save the container and all the packaging materials for future transporting or shipping.
Page 93: Figure 42 Retrofit Installation To Pole Mast
Chapter 4 ________________________________________________________________ Installation 1104-081 Figure 42 Retrofit Installation to Pole Mast The following numbers refer to Figure 42 above: WMT700 Mounting adapter for FIX30/60 WS425 mounting kit Mounting screw VAISALA ________________________________________________________________________ 91...
Page 94: Figure 43 Retrofit Installation To Cross Arm With Array Facing Up
User's Guide ______________________________________________________________________ 1104-082 Figure 43 Retrofit Installation to Cross Arm with Array Facing Up The following numbers refer to Figure 43 above: WMT700 Mounting adapter for FIX30/60 Mounting screw WS425 cross arm 92 ___________________________________________________________________ M211095EN-E...
Page 95: Figure 44 Retrofit Installation To Cross Arm With Array Facing
Chapter 4 ________________________________________________________________ Installation 1104-083 Figure 44 Retrofit Installation to Cross Arm with Array Facing Down The following numbers refer to Figure 44 above: Mounting adapter for FIX30/60 WS425 cross arm WMT700 VAISALA ________________________________________________________________________ 93...
Page 96: Before You Start
User's Guide ______________________________________________________________________ Before You Start Before you start the retrofit installation procedure, make sure that you have the correct items: - Correct mounting kit (already attached to the mast) for a retrofit installation. Figure 45 below shows the available options: FIX30 and WS425FIX60 mounting kits.
Page 97: Figure 4 Ws425Fix60-Pom
WMT700 cables with open leads 227567SP one end (Standard 227568SP 2 m/10 m/15 m/26 m, 237890SP RS485 2 m/10 m, 237889SP ROSA analog 10 m) 231425SP 228259SP 228260SP WMT700 cables with connectors 227565SP on both ends (MAWS, AWS520): 229807SP 227566SP VAISALA ________________________________________________________________________ 95...
Page 98: Mounting Procedure
User's Guide ______________________________________________________________________ Mounting Procedure To upgrade from WS425 to WMT700: Uninstall WS425. If you are using a WMT700 cable, run the cable through the WS425 mounting kit. Connect the cable to the WMT700 wind sensor. If you are using a WS425 cable, ensure the pre-installed O- ring seal sits properly in the plastic male connector (between the existing WS425 cable and the adapter cable).
Page 99: Tightening Connector
Figure 31 on page 72. However, do not use tools when tightening the connector. NOTE Verify that the connector is properly tightened to avoid water leakage and damage to the sensor. If water leaks into the connector, this voids the warranty for WMT700. VAISALA ________________________________________________________________________ 97...
Page 100: Checklist For Connection Cables
User's Guide ______________________________________________________________________ Checklist for Connection Cables Take the following issues into account when installing WMT700: - How to route the cables depends on the mounting option selected for WMT700. When mounting to a mast, the cable can be routed either outside or inside the mast depending on the mast type and other equipment (for instance, lightning rods) installed to the mast.
Page 101: Wiring In Retrofit Installations
- Using WS425 Cables with adapters NOTE To avoid unnecessary connectors and maximize long-term reliability, Vaisala recommends that you use the WMT700 cable for the retrofit installation. Using Standard WMT700 Cables This is the recommended way for the retrofit installation. There...
Page 102: Rosa Cable 10 M (Analog Outputs)
ROSA Cable 10 m (Analog Outputs) The ROSA Cable 10 m (231425SP) is intended for replacing WS425 with WMT700 in the Vaisala ROSA system in case the WS425 has been connected using analog outputs. Table 30 below shows the wire colors and related signals on WMT700.
Page 103: Using Ws425 Cables With Adapters
Data out (TxD) (T-) RS232TX (RT-) Heater Power +36 VDC Gray/Pink Supply Heater Power Green Supply Ground COM2: Yellow Communications Ground Operating Power Black Supply Ground COM2: Tx+ Data out (T+) (RT+) White COM2: Rx+ Data in (R+) (RT+) Pink VAISALA _______________________________________________________________________ 101...
Page 104: Adapter Cable For Ws425 Analog Frequency Output
User's Guide ______________________________________________________________________ NOTE The Adapter Cable for WS425 Serial (227569SP) does not support SDI- 12 operation. Adapter Cable for WS425 Analog Frequency Output The Adapter Cable for WS425 Analog Frequency Output (227570SP) can be with the WS425 cable ZZ45204. Table 32 below lists the adapter pin-outs and signal descriptions as they appear on their user guides for both WMT700 and WS425 connectors.
Page 105: Adapter Cable For Ws425 Analog Voltage Output
Heater Power +36 VDC Gray/ Supply Pink Heater Power Green Supply Ground Operating Power Black Supply Ground Analog Output Yellow Ground Analog Output WS Vout Violet AOUT1, Wind Speed Reference Input WD Vref in White for AOUT2 VAISALA _______________________________________________________________________ 103...
Page 106: Differences Between Wmt700 And Ws425 Analog Output Signals
User's Guide ______________________________________________________________________ Differences between WMT700 and WS425 Analog Output Signals WMT700 pin connections differ from the connections of WS425 in that wind speed signal output, both voltage and frequency signals, appears on WMT700 pin 13. NOTE WMT700 analog outputs must be configured according to the appropriate analog output mode, which is either voltage, frequency, or potentiometer.
Page 107: Powering In Retrofit Installations
WS425. This can affect system performance in power-critical applications such as solar-powered or battery-powered systems. Use solar-power or battery backup only to secure operating voltage. Ensure that the solar-powered system has a sufficient power reserve available. VAISALA _______________________________________________________________________ 105...
Page 108 User's Guide ______________________________________________________________________ This page intentionally left blank. 106 __________________________________________________________________ M211095EN-E...
Page 109: Chapter 5 Operation
To switch WMT700 to the configuration mode using Windows HyperTerminal: Connect a cable between your terminal computer, power supply, and WMT700. ® Open the Windows HyperTerminal program. Cancel the new connection. From the File menu, click Properties. Select the correct COM port and click Configure. VAISALA _______________________________________________________________________ 107...
Page 110 User's Guide ______________________________________________________________________ Set the communication parameters according to the configured port settings of WMT700. The default values for WMT700 are: - Bits per second: 9600 - Data bits: 8 - Parity: None - Stop bits: 1 - Flow control: None Click Apply and OK.
Page 111: Entering And Exiting Configuration Mode
> CLOSE — Exiting Configuration Mode To switch WMT700 from the configuration mode to the measurement mode, use the CLOSE command. >CLOSE<enter> To activate the command, press Enter |____ The CLOSE command |__________ Configuration mode prompt |_____________ VAISALA _______________________________________________________________________ 109...
Page 112: Configuration
User's Guide ______________________________________________________________________ Configuration NOTE You have chosen the initial settings for WMT700 when placing the order. In case you want to check and/or change the settings, see the instructions in this section. Otherwise, you can start using WMT700 directly after the installation. The initial settings have been configured at the factory according to the customer specifications you have given when ordering the product.
Page 113: Parameter Handling Commands
|_________________ Configuration mode prompt The parameter name and allowed parameter values depend on the command. For certain commands they are optional. In the following command descriptions, WMT700 configuration mode prompt and enter are left out for clarity. VAISALA _______________________________________________________________________ 111...
Page 114: S - Set Parameter
User's Guide ______________________________________________________________________ S — Set Parameter The S command defines new data messages and changes values of the WMT700 parameters. For parameter names and the allowed and default values, see Appendix D, Configuration Parameters on page 205. You can also use the S command to configure data messages. For instructions, see Appendix D, Configuration Parameters, on page 205.
Page 115: G - Get Parameter
You can use the G command to view all parameter values if you do not specify any parameters in the command. Get Specified Parameters You can use the G command to view specified parameter values. where = Any parameter in Appendix D Configuration Parameters on page 205 VAISALA _______________________________________________________________________ 113...
Page 116: Baud - Display Or Set Port Settings
User's Guide ______________________________________________________________________ Example: In this example the averaging time is shown to be 4 seconds. G wndAvg s wndAvg ,3.00000 BAUD — Display or Set Port Settings This command shows or changes values of the serial port settings. Set Port Settings You can use the BAUD command to change the bit rate, parity bit, data bits, stop bit, and communication profile of the selected serial port.
Page 117: Wind Measurement Control Commands
START STOP — Stop Wind Measurement This command stops continuous wind measurement. To restart measurement, use the MEAS or START command. You can fetch the most recent measurement data at any time with the polling command. STOP VAISALA _______________________________________________________________________ 115...
Page 118: Diagnostics And Support Commands
User's Guide ______________________________________________________________________ Diagnostics and Support Commands ERRORS — Get Error Codes and Counts This command fetches error information from WMT700. For a list of the errors and events, see section Error and Event Messages on page 185. ERRORS The response is as follows: a,b,c,d,e,f where = Number of events since latest reset...
Page 119: Clearerr - Reset Error Codes And Counts
WMT700. You need to specify the data message format in the command. NOTE Vaisala recommends that you only use this command for testing data connections. To fetch measurement data for other purposes, switch the serial port to the measurement mode. The polling command in the measurement mode depends on the selected profile.
Page 120: Version - Show Firmware Version
This command displays the label and version of the WMT700 software. VERSION WIND_GET — Get Calibration Data This command fetches the WMT700 calibration date and other calibration data. This information is mostly intended for Vaisala technical support. WIND_GET Configuration Parameters There are a number of parameters affecting WMT700 functionality.
Page 121: User-Configurable Data Messages
Configure new data messages with the msg1, msg2, msg3, and msg4 parameters. All available items are listed in Table 36 on page 120, Table 37 on page 120, and Table 38 on page 121. VAISALA _______________________________________________________________________ 119...
Page 122: Table 36 Wind Measurement Items For Data Messages
User's Guide ______________________________________________________________________ Table 36 Wind Measurement Items for Data Messages Item Description Address Wind direction minimum calculated over the averaging period Wind direction maximum calculated over the averaging period Wind gust speed Wind lull speed Signal quality Speed of sound Sonic temperature Validity of the measurement data.
Page 123: Table 38 Monitoring Items For Data Messages
S msg1,$\ws,\wd,\vi\cr\lf When the above message is polled, WMT700 sends the following data if the average wind speed is 5 m/s, the average wind direction is 128 degrees, and the supply voltage is 23.4: $05.00,128,23.4<CR><LF> VAISALA _______________________________________________________________________ 121...
Page 124 User's Guide ______________________________________________________________________ Example 2: In this example the data message 2 is set to include the following items: - SOH - Checksum calculation start point - Wind speed, average - Wind direction, average - Wind gust speed - Wind lull speed - Wind direction minimum - Wind direction maximum - Wind direction during the peak speed (wp) occurred...
Page 125: Status Flags
| | | | | |_______Supply voltage not too low | | | | |________Wind speed in operation limit | | | |_________Sonic temperature exceeds operating limit | | |___________Wind measurement OK | |____________Not used |_____________No sensors blocked VAISALA _______________________________________________________________________ 123...
Page 126: Loading Settings From Configuration File
User's Guide ______________________________________________________________________ Loading Settings from Configuration File To facilitate the configuration of WMT700, all settings can be configured at once using configuration files. You can send a text file containing the configuration settings to the sensor with a ® terminal program, such as Tera Term or Windows HyperTerminal.
Page 127 S freqType,0 S aout1_o,0.00000 S aout1_g,1.00000 S aout1minv,0.00000 S aout1maxv,32000.0 S aout1err,1000.00 S aout1mode,3 S aout2_g,1.00000 S aout2_o,0.00000 S aout2minv,0.00000 S aout2maxv,32000.0 S aout2err,1000.00 S aout2mode,7 S msg1,\ss$\ws,\wd,\se\sp\cr\lf S msg2,2 S msg3,3 S msg4,4 S address,A S messages,1 VAISALA _______________________________________________________________________ 125...
Page 128: Operating Wmt700
User's Guide ______________________________________________________________________ Operating WMT700 After WMT700 has been installed and configured, you can start operating the wind sensor as follows: - To receive wind measurement data through a serial connection as data messages, use serial communication. When using the WMT700 profile, see the operating instructions below.
Page 129: Data Messages
Table 40 on page 128 lists the data messages supported by WMT700. The data message numbers in the table below are needed when the WMT700 protocol POLL command is used or the Automatic Message mode is used with any protocol. VAISALA _______________________________________________________________________ 127...
Page 130: Table 40 Data Messages
User's Guide ______________________________________________________________________ Table 40 Data Messages Data Message Description Number WMT700 Data Messages WMT700 NMEA MWV profile message that reports average wind speed and direction. WMT700 profile message that reports average wind speed and direction. WMT700 profile message that reports wind speed in x and y components.
Page 131: Wmt700 Data Message 21
WMT700 Data Message 22 reports the wind speed in x and y components in the format described below: $\wx,\wy\cr\lf where Fixed text Wind speed average, x component Wind speed average, y component CR (carriage return) LF (line feed) Example: $-00.04,00.07<cr><lf> VAISALA _______________________________________________________________________ 129...
Page 132: Wmt700 Data Message 23
User's Guide ______________________________________________________________________ Interpretation of the example message: - Wind speed, average, x component: -0.04 - Wind speed, average, y component: 0.07 For examples of different wind speed and direction presentations, see Figure 13 on page 39. WMT700 Data Message 23 WMT700 Data Message 23 reports wind measurement and self- diagnostics data in the format described below: $\ws,\wd,\wp,\wm,\Ts,\vh,\vi,\ta,\er\cr\lf...
Page 133: Wmt700 Data Message 24
- Wind speed, maximum: 3.58 m/s - Wind speed, minimum: 3.37 m/s - Sonic temperature: 21.97 °C - Heater voltage: 23.8 V - Supply voltage: 23.6 V - Transducer temperature: 23.8 °C - Status code: 0 - Checksum: D4 VAISALA _______________________________________________________________________ 131...
Page 134: Wmt700 Data Message 25
User's Guide ______________________________________________________________________ WMT700 Data Message 25 WMT700 Data Message 25 reports wind measurement, sonic temperature, and status data. The checksum is included in the message. WMT700 calculates the checksum by applying 8-bit XOR for all bytes between checksum calculation start point and end point.
Page 135: Rosa - Mes12 Data Message
ROSA - MES12 Data Message The MES12 Data Message 12 is used in the ROSA Surface Analyzer for Roads and Runways system. You can use this data message when WMT700 is connected to the Vaisala ROSA system. This message contains sensor identifications (sids), corresponding data items, and the synchronization characters SOH, STX, and ETX.
Page 136: Error Indication
User's Guide ______________________________________________________________________ Error Indication WMT700 provides advanced self-diagnostics for monitoring the status of the wind sensor and the validity of the measurement data. You can use the diagnostics as follows: - WMT700 checks the status of the internal operational software at each reset by verifying the CRC checksum of the software.
Page 137: Measurement Mode Commands
Characters <CR>, <LF>, and $ are not allowed. If you use 0 as the address in the command, WMT700 responds regardless of the configured address. If response for parameter setting is enabled (messages parameter is set to 1), WMT700 responds to an invalid command with an error message. VAISALA _______________________________________________________________________ 135...
Page 138: Meas - Start Measurement
User's Guide ______________________________________________________________________ Table 41 Measurement Mode Commands Command Description $aMEAS Starts wind measurement in single measurement mode. The duration of the measurement is based on the user- configurable averaging time. $aOPEN Switches the serial port to configuration mode. $aPOLL,y Fetches latest measurement data from WMT700.
Page 139: Poll - Poll Data
COM2. For more information on the sleepTime parameter, see Appendix D, Configuration Parameters, on page 205. $aSLEEP<CR><LF> where Fixed text WMT700 address. If the value is 0, it refers to any WMT700 address VAISALA _______________________________________________________________________ 137...
Page 140: Rosa - Mes12 Profile Commands
ROSA Surface Analyzer for Roads and Runways system. You can use this data message when WMT700 is connected to the Vaisala ROSA system. M 12 — Poll MES12 Data Message This command fetches data from WMT700 in the MES12 data message format.
Page 141: Operating Wmt700 In Ws425 Analog Output Mode
When operating WMT700 in a system configured for WS425, the analog output settings must be configured according to Table 42 on page 140 using the S command. For more information on the S command, see section S — Set Parameter on page 112. VAISALA _______________________________________________________________________ 139...
Page 142: Table 42 Required Parameters For Ws425 Analog Output
User's Guide ______________________________________________________________________ Table 42 Required Parameters for WS425 Analog Output Operation Mode Parameter Name Default Value Allowed Values Description of How to Emulate WS425 aout1err 1000 0 …. 32000 Set 1 for voltage output and 625 for frequency output for similar operation as with WS425.
Page 143: Wind Speed Output
(227570SP) and a WS425 cable are used. With WMT700, the wind speed signal appears at pin 14 (pink) of the adaptor cable. 1212-001 Figure 48 Wind Speed Frequency Analog Output with WS425 Cable and Adapter Cable for Analog Frequency Output VAISALA _______________________________________________________________________ 141...
Page 144: Voltage
User's Guide ______________________________________________________________________ Voltage When voltage is selected as the wind speed analog output, the output from WMT700 varies linearly from 0 VDC at 0 miles per hour to 1 VDC at 125 miles per hour. In SI units, the voltage varies linearly from 0 VDC at 0 meters per second to 1 VDC at 55.88 meters per second.
Page 145: Wind Direction Output
Figure 50 below shows the output for wind direction. With WMT700, the wind direction signal appears at pin 13 (gray) of the adapter cable. 1212-003 Figure 50 Wind Direction Voltage Output with WS425 Cable and Adapter Cable VAISALA _______________________________________________________________________ 143...
Page 146: Limitations For Output Signals
User's Guide ______________________________________________________________________ Limitations for Output Signals You can specify the minimum and maximum values for analog output with the configuration parameters. The output is fixed to the specified values, and the unit depends on the selected analog output mode. Example To limit the output 1 in voltage mode to a range of 0.1 …...
Page 147: Operating Wmt700 With Ws425 And Sdi-12 Profiles
WMT700 directly after the installation with these settings. In case you want to change the communication profile, change manually all needed parameters to match the new profile. The needed configurable parameters are listed separately for each profile in this manual. VAISALA _______________________________________________________________________ 145...
Page 148: Operating Wmt700 With Terminal Program
User's Guide ______________________________________________________________________ Operating WMT700 with Terminal Program To operate WMT700 through a serial connection, the following prerequisites are needed: - PC with a serial port. - Required cables for serial connection. For more information, see section Before You Start on page 94. ®...
Page 149: Entering Configuration Mode
This command switches the serial port to configuration mode. The command works with any communication profile supported by WMT700. $aOPEN<CR><LF> where Fixed text Value of the address parameter. If the value is 0, it refers to any WMT700 address <CR> Carriage return <LF> Line feed VAISALA _______________________________________________________________________ 147...
Page 150: Ws425 F/G Asos Profile
User's Guide ______________________________________________________________________ WS425 F/G ASOS Profile Configurable Parameters Table 43 below lists the configurable parameters and their allowed and default values for the WS425 F/G ASOS profile. Table 43 Configurable Parameters for WS425 F/G ASOS Profile Parameter Default Profile-Specific Allowed Description Value Values...
Page 151: Ws425 F/G Asos Commands
WMT700: WB, WFIRMWARE, WJ, WD, WF, WR, WCAL, WH, WT, WCDV, WSTK, WL, WM, WN, WSST, and WATE. WMT700 can only be configured in the configuration mode. For a list of configuration commands for WMT700, see section Configuration on page 110. VAISALA _______________________________________________________________________ 149...
Page 152: Wa - Fetch Averaged Wind Speed And Direction
User's Guide ______________________________________________________________________ WA — Fetch Averaged Wind Speed and Direction This command requests the averaged wind speed and direction message with peak winds. WA <CR><LF> The response to the WA command consists of the averaged wind speed and direction data, peak wind speed, and associated direction.
Page 153 - Incoming supply voltage good in range 10.5 to 13.5 V - 5.0 V supply good in range 4.5 to 5.5 V - 10 V supply good in range 9.0 to 11.0 V - Signal Quality Index good above 50 VAISALA _______________________________________________________________________ 151...
Page 154: Ws425 F/G Asos Data Message
User's Guide ______________________________________________________________________ WS425 F/G ASOS Data Message WMT700 responds to the WA command with a data message described in Table 45 below. Table 45 WS425 F/G ASOS Data Message Byte Description Start of text Sensor ID Command identifier Sensor status: P = Pass F = Fail H = Heater failure...
Page 155 - Averaging time for peak wind speed and direction (seconds): - Averaged wind speed: 012.6 - Peak wind speed since last WA command: 014.7 - Wind speed units: K = knots - Signal quality: 99 - Hex checksum (refer to note 4): xx VAISALA _______________________________________________________________________ 153...
Page 156: Ws425 A/B Nmea Standard Profile
User's Guide ______________________________________________________________________ WS425 A/B NMEA Standard Profile When the WS425 A/B NMEA Standard profile is configured, WMT700 sends messages based on the configured automatic message interval. There are no operating commands available for the user. Configurable Parameters Table 46 below lists the configurable parameters and their allowed and default values for the WS425 A/B NMEA Standard profile.
Page 157: Ws425 A/B Nmea Standard Data Message
Missing Readings If data is missing due to a measurement problem, the NMEA messages show "V" in the status field. Wind speed and wind direction fields are left empty. VAISALA _______________________________________________________________________ 155...
Page 158: Ws425 Nmea Extended Profile (V. 0183)
User's Guide ______________________________________________________________________ WS425 NMEA Extended Profile (v. 0183) When the WS425 A/B NMEA Extended profile is selected, you can set WMT700 to send messages based on the configured automatic message interval or poll data using the $WIP command. Configurable Parameters Table 47 below lists the configurable parameters and their allowed and default values for the WS425 A/B NMEA Extended profile.
Page 159: Ws425 A/B Nmea Extended Commands
To use WMT700 with the NMEA Extended profile, either set the NOTE autoSend parameter to 0 to enable polling or define a fixed output interval with the autoInt parameter. If you are using automatic messages, the value for the autoSend parameter must be set to 15. VAISALA _______________________________________________________________________ 157...
Page 160: Ws425 A/B Nmea Extended Data Message
User's Guide ______________________________________________________________________ WS425 A/B NMEA Extended Data Message WS425 A/B NMEA Extended data message is as follows: $P<id>MWV,<dir>,<ref>,<spd>,<uni>,<sta>*<chk><CR><LF> where Fixed text <id> Data ID; A … Z Fixed text <dir> Wind angle: 0 to 359 degrees <ref> Reference: R = relative <spd>...
Page 161: Ws425 A/B Ascii Profile
Chapter 5 _________________________________________________________________ Operation WS425 A/B ASCII Profile ® NOTE In Vaisala WINDCAP Ultrasonic Wind Sensor WS425 User's Guide, this profile was called the Handar mode. Configurable Parameters Table 49 below lists the configurable parameters and their allowed and default values for the WS425 A/B ASCII Profile.
Page 162: Ws425 A/B Ascii Commands
This command shows the vendor, model number, and version information of WMT700. Example of the command and response: VAISALA WMT700 200 Wx — Start Measurement This command starts wind measurement based on averaging time and fetches the data automatically when the measurement has finished.
Page 163: Table 51 Ws425 A/B Ascii Data Message
LF (line feed) NOTE The checksum is calculated from the characters from position 2 to 14. The accumulator initializes at 0 with the addition of the byte value. The checksum has a range of 0H … FFH. VAISALA _______________________________________________________________________ 161...
Page 164: Missing Readings
User's Guide ______________________________________________________________________ Example of the command and response: W5P1200013.2TDE Interpretation of the example message: 02H (<STX>, start of transmission) ┐ - Sensor ID: W - Averaging in seconds: 5 - Sensor status: P = pass - Wind direction: 120 - Wind speed: 0013 - .
Page 165: Ws425 A/B Wat11 Profile
Measurement and STOP — Stop Wind Measurement on page 115. WS425 A/B WAT11 Commands When the WS425 A/B WAT11 profile is selected, you can poll data using the following command: <esc><id> where <esc> = Escape character ASCII 27H <id> = WMT700 ID, for example, A VAISALA _______________________________________________________________________ 163...
Page 166: Missing Readings
User's Guide ______________________________________________________________________ The response is as follows: <stx><id><spd><dir> where <stx> = Start of text character (1 digit) <id> = WMT700 identification character, for example, A (one digit) <spd> = Wind speed (in meters per second) multiplied by 10. For example, 045 is 4.5 meters per second (three digits) <dir>...
Page 167: Profile (V 1.3)
SDI-12 sub modes A and B are not supported by WMT700. NOTE When establishing the terminal connection to WMT700, set the following communication settings for the SDI-12 profile: Bits per second: 1200 Data bits: 7 Parity: 1 Stop bits: 1 Flow Control: None VAISALA _______________________________________________________________________ 165...
Page 168: Configurable Parameters
User's Guide ______________________________________________________________________ Configurable Parameters Table 53 below lists the configurable parameters and their allowed and default values for the SDI-12 profile. Table 53 Configurable Parameters for SDI-12 Profile Parameter Default Profile-Specific Description Value Allowed Values address 1, 2, 3, 4, 5, 6, 7, 8, 9 Address for WMT700 autoPort 1 = COM1 port...
Page 169: Sdi-12 Commands
Command aXQx;c.c;n;yyyy!, Reset the Sensor to Sub mode A Command aXS!, Check Current Measurement Unit Command aX*!, aR0! Continuous Measurement. For a list of configuration commands for WMT700, see Appendix A, Complete Command Set for WMT700, on page 195. VAISALA _______________________________________________________________________ 167...
Page 170: Address Query
User's Guide ______________________________________________________________________ ?! — Address Query This command queries for the WMT700 address. When you use a question mark (?) as the address character with the a! command, WMT700 responds as if it was being addressed on the SDI-12 bus. Regardless of its address, WMT700 responds to the command, which allows you to determine the address for the wind sensor.
Page 171: A! - Acknowledge Active
= Terminates the command The response is the following: a<CR><LF> where = Single-digit WMT700 address that corresponds to the first character of the address value <CR><LF> = Terminates the response Example of the command and response: 1<CR><LF> VAISALA _______________________________________________________________________ 169...
Page 172: Aab! - Change Address
User's Guide ______________________________________________________________________ aAb! — Change Address This command changes the WMT700 address. After WMT700 has received this command and sent a response, the sensor does not respond to any other command for one second. This gives WMT700 time to write the new address to the non-volatile memory.
Page 173: Ac! - Start Concurrent Measurement
Example of the command and response: 100205<CR><LF> Interpretation of the example message: - Time after which the measurement is ready: 2 seconds - Number of returned measurement values: 5 To fetch the measurement results, use the aD0! command. VAISALA _______________________________________________________________________ 171...
Page 174: Ad0! - Send Data
User's Guide ______________________________________________________________________ aD0! — Send Data This command fetches instant data from WMT700. aD0! must be preceded by a C!, M!, or V! command. WMT700 responds by sending measurement data (after C! or M!) or verification data (after V!). In a SDI-12 system compliant with the standard, if the expected number of measurements is not returned in response to an aD0! command, a data recorder issues D1!, D2!, and so on, until all...
Page 175: Am! - Start Measurement
Single-digit WMT700 address that corresponds to the first character of the address value Start measurement command Terminates the command VAISALA _______________________________________________________________________ 173...
Page 176 User's Guide ______________________________________________________________________ The response is the following: atttn<CR><LF> where = Single-digit WMT700 address that corresponds to the first character of the address value = Period of time, in seconds, after which WMT700 has the measurement ready = Number of measurement values WMT700 calculates and returns as a response to one or more subsequent aD0! commands <CR><LF>...
Page 177: Av! - Start Verification
Example of the command and response: 10014<CR><LF> Interpretation of the example message: - Time when the measurement is ready: 1 second - Number of returned measurement values: 4 To fetch the measurement results, use the aD0! command. VAISALA _______________________________________________________________________ 175...
Page 178: Sdi-12 Data Messages
User's Guide ______________________________________________________________________ SDI-12 Data Messages When the SDI-12 profile is selected, the data message sent by WMT700 depends on the command that you use before fetching the data with the aD0! command. WS425 A/B SDI-12 Message for C and M Command When you have given the commands aC! or aM! followed by aD0!, the response is the following:...
Page 179: Ws425 A/B Sdi-12 Message For V Command
<CR><LF>. It is encoded as three ASCII characters using the following algorithm: 1st character=0x40 OR (CRC shifted right 12 bits) 2nd character=0x40 OR ((CRC shifted right 6 bits) AND 0x3F) 3rd character=0x40 OR (CRC AND 0x3F) VAISALA _______________________________________________________________________ 177...
Page 180 User's Guide ______________________________________________________________________ Example of the command and response: 1MC! 10025<CR><LF> 1D0! 1+2.7+85.2-0.2-2.7+770.5CAH<CR><LF> 178 __________________________________________________________________ M211095EN-E...
Page 181: Chapter 6 Maintenance
When handling WMT700, do not rotate, pull, strike, bend, scrape or touch the transducers with sharp objects. Any impact on the wind sensor array damages the device. NOTE In maritime environments, it is not possible to perform WMT700 software updates. VAISALA _______________________________________________________________________ 179...
Page 182: Periodic Maintenance
However, some quality management systems may require regular calibration of the measuring instruments. To fulfill these requirements, Vaisala recommends that you recalibrate the wind sensor every 24 months. Contact Vaisala Service Center for more information. Visual Inspection Vaisala recommends that you carry out a periodic visual inspection of the wind sensor to ensure correct operation and clean the wind sensor if it becomes contaminated.
Page 183: Testing Proper Operation
You can order WM Verifier from Vaisala as an accessory; see Table 62 on page 192. Vaisala recommends that you perform the test every 12 months or if you suspect that the transducers may have been damaged. The test can be performed either in the field or in a laboratory.
Page 184: Figure 51 Testing Wmt700 With Wm Verifier
User's Guide ______________________________________________________________________ 1005-003 Figure 51 Testing WMT700 with WM Verifier 182 __________________________________________________________________ M211095EN-E...
Page 185: Chapter 7 Troubleshooting
The WMT700 settings are unknown or Reset the serial communication you try to switch to they have been accidentally changed. settings to default values. See configuration mode with the section Restoring Serial Port OPEN command. Settings on page 186. VAISALA _______________________________________________________________________ 183...
Page 186 User's Guide ______________________________________________________________________ Problem Probable Cause Remedy WMT700 does not respond The communication profile is not Configure the communication to any commands. correct. profile to match the host communication profile. The wiring might be incorrect. Check the wiring, see section Wiring on page 77 Connection works but data The command has been mistyped.
Page 187: Error And Event Messages
Checklist for Connection installation. Cables on page 73. If you do not have the correct cables, contact Vaisala technical support. Connection to WMT700 is The power supply is not sufficient, Check that the power supply lost.
Page 188: Restoring Serial Port Settings
User's Guide ______________________________________________________________________ You can also troubleshoot WMT700 as follows: - Fetch the error and event messages with the ERRORS command. For more information, see section ERRORS — Get Error Codes and Counts on page 116. - Include diagnostics-related items in the data message. For more information, see section Parameter Handling Commands on page 111.
Page 189: Table 57 Restored Serial Port Settings
The serial port settings have now been restored to known values. You can send the OPEN command and start configuring WMT700. For information on the configuration commands, see section Configuration on page 110. NOTE You can also use other terminal programs, such as Tera Term. VAISALA _______________________________________________________________________ 187...
Page 190: Technical Support
User's Guide ______________________________________________________________________ Technical Support For technical questions, contact the Vaisala technical support by e-mail at helpdesk@vaisala.com. Provide at least the following supporting information: - Name and model of the product in question - Serial number of the product - Name and location of the installation site...
Page 191: Technical Data
±0.1 m/s or 2% of reading, whichever is greater Table 59 Wind Direction Property Description/Value Measurement range 0 … 360° Starting threshold 0.1 m/s Resolution 0.01° Accuracy ±2° Response time 250 ms Available variables instant, average, maximum, minimum VAISALA _______________________________________________________________________ 189...
Page 192: Table 60 Outputs
User's Guide ______________________________________________________________________ Table 60 Outputs Property Description/Value Digital outputs: Communication interfaces COM1: RS-485 COM2: RS-485, RS-422, RS-232, SDI-12 Communication protocols WMT700, WS425 ASCII, NMEA Standard and Extended (version 0183), SDI-12 (version 1.3), WS425 ASOS, ROSA - MES12, Customized Bit rate 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200 Available averages...
Page 193: Table 61 General
24 … 30 VDC (-10% … +30%), as defined in the maritime standard IEC 60945. NOTE Any temporary element or object (such as snow, ice, or a bird) blocking the measurement path between the ultrasonic transducer heads may affect the wind measurement accuracy or even invalidate the output data. VAISALA _______________________________________________________________________ 191...
Page 194: Table 62 Accessories
User's Guide ______________________________________________________________________ Table 62 Accessories Group Description Order Code Tool Zero Wind Verifier WMT70Verifier Cable Tightening Tool 237888SP Bird Bird cage WMT70BirdKit Bird perch WS425BirdPerch Cable Cable connector WMT70Conn Cable 2 m, cable connector, open leads on one end 227567SP Cable 10 m, cable connector, open leads on one end 227568SP...
Page 195: Dimensions
Chapter 8 _____________________________________________________________ Technical Data Dimensions Figure 52 below and Figure 53 on page 194 show the dimensions of the WMT700 wind sensor and the FIX70 mounting kit. 1001-015 Figure 52 WMT700 Dimensions in Millimeters VAISALA_______________________________________________________________________ 193...
Page 196: Figure 53 Fix70 Mounting Kit Dimensions In Millimeters
User's Guide ______________________________________________________________________ 1103-055 Figure 53 FIX70 Mounting Kit Dimensions in Millimeters 194 __________________________________________________________________ M211095EN-E...
Page 197: Complete Command Set For Wmt700
Polls data from WMT700 in the MES12 data message MES12 profile format. Measurement mode Requests average wind speed and direction message. WS425 ASOS F/G profile Measurement mode Requests the verbose Built-In Test (BIT) results. WS425 ASOS F/G profile VAISALA _______________________________________________________________________ 195...
Page 198 User's Guide ______________________________________________________________________ Configuration Mode/ Command Description Measurement Mode and Profile Measurement mode $WIP Polls data from WMT700. WS425 A/B NMEA Extended profile Measurement mode $aabbQ,MWV Polls NMEA MWV message from WMT700. WMT700 NMEA MWV profile Measurement mode Requests identification information from WMT700. WS425 A/B ASCII profile Measurement mode Starts measurement based on averaging time and...
Page 199: Typical System Environments
Figure 54 below shows a system in which the weather station is connected to COM2, while COM1 is left for service and maintenance purposes only. This is the recommended setup for WMT700 serial communications. 1003-051 Figure 54 System Environment with Serial Port COM1 Only VAISALA _______________________________________________________________________ 197...
Page 200: Figure 55 System Environment With Analog Output Only
User's Guide ______________________________________________________________________ Figure 55 below shows a system in which the weather station is only connected to the analog output channel. Serial port COM1 is used for maintenance purposes. 1003-052 Figure 55 System Environment with Analog Output Only 198 __________________________________________________________________ M211095EN-E...
Page 201: Figure 56 System Environment With Serial Ports Com1 And Com2
Figure 56 below shows a system in which serial ports COM1 and COM2 operate independently. Serial port COM1 is used for maintaining WMT700 and monitoring the wind sensor in mission-critical applications while COM2 provides continuous measurement data. 1003-053 Figure 56 System Environment with Serial Ports COM1 and COM2 VAISALA _______________________________________________________________________ 199...
Page 202: Figure 57 System Environment With Backup Battery
User's Guide ______________________________________________________________________ Figure 57 below shows a system with a separate back-up battery for operating power. The heating power is supplied with a direct power supply unit that prevents the heating function from consuming the power supply for the operations. This setup is suitable for WMT700 product types that provide heating for the wind sensor.
Page 203: Default Settings For Different Communication Profiles
Appendix C ______________________________ Default Settings for Different Communication Profiles APPENDIX C DEFAULT SETTINGS FOR DIFFERENT COMMUNICATION PROFILES This appendix lists the default settings for different digital communication profiles. All the allowed values for different communication profiles are listed in Table 64 on page 202. VAISALA _______________________________________________________________________ 201...
Page 204: Table 64 Default Settings For Different Digital Communication
User's Guide ______________________________________________________________________ Table 64 Default Settings for Different Digital Communication Profiles Setting Parameter WMT700 WS425 WS425 WS425 WS425 ROSA ASCII NMEA SDI-12 MES12 ASOS Service Port Protocol com1_ WMT700 WMT700 WMT700 WMT700 WMT700 WMT700 protocol Baud rate com1_baud 9600 9600 9600 9600...
Page 205: Table 65 Parameters Without Protocol-Specific Default Value
They are defined in the configuration code. Table 65 Parameters without Protocol-Specific Default Value Setting Parameter WMT700 WS425 WS425 WS425 WS425 F/G ROSA MES12 ASCII NMEA SDI-12 ASOS Interface com2Interf type Wind wndUnit speed unit VAISALA _______________________________________________________________________ 203...
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Page 207: Configuration Parameters
2 = COM2 port automatic data messages. autoSend 0 = Automatic Automatic data message number. messages disabled Selects the data message format for 1 … 99 automatic messages. cal_date Wind calibration date. This is a read-only parameter. VAISALA _______________________________________________________________________ 205...
Page 208 User's Guide ______________________________________________________________________ Parameter Default Allowed Values Units Description Name Value com1_baud 0 = 300 Baud rates for serial ports COM1 and com2_baud 1 = 1200 COM2. Changes take effect only after reset or the RESET command. 2 = 2400 3 = 4800 Note that a low bit rate can affect 4 = 9600...
Page 209 1 = mph This parameter affects data messages 2 = km/h sent through serial interfaces but has no 3 = knots impact on analog output. wndVector 0 = Scalar averaging Wind averaging method 1 = Vector averaging VAISALA _______________________________________________________________________ 207...
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Page 211: Wmt700 Nmea Mwv Profile
WMT700 NMEA MWV profile. When the WMT700 NMEA MWV profile is selected, you can set WMT700 to send messages based on the configured automatic message interval or poll MWV message using the NMEA Query command. VAISALA _______________________________________________________________________ 209...
Page 212: Configurable Parameters
User's Guide ______________________________________________________________________ Configurable Parameters Table 67 below lists the configurable parameters and their allowed and default values for the WMT700 NMEA MWV profile. Table 67 Configurable Parameters for WMT700 NMEA MWV Profile Parameter Default Profile-Specific Allowed Description Value Values address String with 2 characters, Address for WMT700.
Page 213: Wmt700 Nmea Mwv Commands
To use WMT700 with the WMT700 NMEA MWV profile, either set the autoSend parameter to 0 to enable polling or define a fixed output interval with the autoInt parameter. If you are using automatic messages, the value for the autoSend parameter must be set to 20. VAISALA _______________________________________________________________________ 211...
Page 214: Wmt700 Nmea Mwv Data Message
User's Guide ______________________________________________________________________ WMT700 NMEA MWV Data Message WMT700 NMEA MWV data message is as follows: $<id>MWV,<dir>,<ref>,<spd>,<uni>,<sta>*<chk><CR><LF> where Message header <id> Two character sensor ID; AA … ZZ Fixed text <dir> Wind angle: 0 to 359 degrees <ref> Reference: R = Relative <spd>...
Page 215: Appendix Faccessories
Appendix F ______________________________________________________________ Accessories APPENDIX F ACCESSORIES This Appendix lists all the accessories available for WMT700. VAISALA _______________________________________________________________________ 213...
Page 216: Figure 58 Complete Set Of Accessories
User's Guide ______________________________________________________________________ 1304-061 Figure 58 Complete Set of Accessories 214 __________________________________________________________________ M211095EN-E...
Page 217 16 = Cables with open lead (227267SP, 227568SP, 228259SP, 237889SP, 237890SP) 17 = Vaisala MAWS cable (227565SP) 18 = Vaisala AWS cables (229807SP, 227566SP) 19 = Vaisala WS425 adapter cables (227569SP, 227570SP, 227571SP) 20 = WMT700 connector DIY kit (WMT70Conn) VAISALA _______________________________________________________________________ 215...
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Page 219: Appendix Gcertificates
Appendix G _______________________________________________________________ Certificates APPENDIX G CERTIFICATES This appendix contains copies of certificates issued for WMT700. VAISALA _______________________________________________________________________ 217...
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Page 221 *M211095EN*...

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