Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Vaisala WS425 F/G
Summary of Contents for Vaisala WS425 F/G
- Page 1 USER'S GUIDE Vaisala Ultrasonic Wind Sensor WS425 F/G M210713EN-C...
- Page 2 The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the...
-
Page 3: Table Of Contents
WS425 F/G ........ - Page 4 MAINTENANCE ..........65 Visual Inspection of Ultrasonic Wind Sensor WS425 F/G .65 Preventive Maintenance .
- Page 5 Technical Support ....... . . 83 Vaisala Service Centers ......83 CHAPTER 7 TECHNICAL DATA .
- Page 6 ________________________________________________________________________________ 4 _______________________________________________________________________________...
- Page 7 Fiber Optic Modem FOM111 ......21 Figure 8 WS425 F/G Tower Assembly......24 Figure 9 Sensor Cable Installation .
- Page 8 ________________________________________________________________________________ 6 _______________________________________________________________________________...
- Page 9 Explanation of the WF Command Message....48 Table 6 Field Replaceable Units of Ultrasonic Wind Sensor WS425 F/G. 86 Table 7 Wind Speed ......... 86 Table 8 Wind Direction .
- Page 10 ________________________________________________________________________________ 8 _______________________________________________________________________________...
-
Page 11: Chapter 1 General Information
Chapter 2, Product Overview: This chapter introduces the features and advantages of Vaisala Ultrasonic Wind Sensor WS425 F/G. Chapter 3, Installation: This chapter provides you with information on the installation and alignment procedures, and connections of the power supply and fiber optic modem. -
Page 12: Feedback
Chapter 6, Maintenance: This chapter contains instructions for the basic maintenance, fault isolation and installation and removal of the field replaceable units of the Vaisala Ultrasonic Wind Sensor WS425 F/G. Chapter 7, Technical Data: This chapter provides the technical data of the product and lists the field replaceable units, and the accessories. -
Page 13: Product Related Safety Precautions
Chapter 1 ________________________________________________________ General Information Product Related Safety Precautions The Vaisala Ultrasonic Wind Sensor WS425 F/G delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions: Ground the product, and verify outdoor installation grounding WARNING periodically to minimize shock hazard. -
Page 14: License Agreement
Do not dispose of with regular household refuse. License Agreement All rights to any software are held by Vaisala or third parties. The customer is allowed to use the software only to the extent that is provided by the applicable supply contract or Software License Agreement. - Page 15 Chapter 1 ________________________________________________________ General Information b)The allegedly defective Product or part shall, should Vaisala so require, be sent to the works of Vaisala or to such other place as Vaisala may indicate in writing, freight and insurance prepaid and properly packed and labelled, unless Vaisala agrees to inspect and repair the Product or replace it on site.
- Page 16 User's Guide ______________________________________________________________________ 14 ______________________________________________________________________________...
-
Page 17: Chapter 2 Product Overview
Introduction to Ultrasonic Wind Sensor WS425 F/G Thank you for choosing Vaisala Ultrasonic Wind Sensor WS425 F/G. It measures wind speed and direction from the smallest breeze to hurricane force gales, including gusts. VAISALA _______________________________________________________________________ 15... - Page 18 Wind measurement and wind data is important in meteorology, aviation, transport safety, in ships and harbors, and also in many industrial applications. Vaisala manufactures wind sensors for all these needs, from low cost combined units to sophisticated totally heated sensors for extreme weather conditions. For more information, please contact your Vaisala representative or visit www.vaisala.com.
-
Page 19: Ultrasonic Wind Sensor Ws425 F/G Components
Module assembly, power supply Fiber optic modem (FOM) assembly The device consists of the following field replaceable units (FRU): Wind sensor, model WS425 F/G (item 1 in Figure 2 on page Power supply,WS425PowerUS or WS425PowerEU (item 2) Module assembly, power supply (item 3) -
Page 20: Figure 3 Schematic Of Ultrasonic Wind Sensor Ws425 F/G
User's Guide ______________________________________________________________________ 0506-010 Figure 3 Schematic of Ultrasonic Wind Sensor WS425 F/G The following numbers refer to Figure 3 on page Sensor body Bird spike Transducer (3 pcs) 18 ______________________________________________________________________________... -
Page 21: Figure 4 Ultrasonic Wind Sensor Power Supply
NOTE made for 115 VAC - the European model WS425PowerEU has different primary (internal) wiring and is made for 240 VAC. The customer must check local regulations concerning the correct and safe wiring of the power supply. VAISALA _______________________________________________________________________ 19... -
Page 22: Figure 5 Power Supply And Fom Module Assembly
User's Guide ______________________________________________________________________ 0506-012 Figure 5 Power Supply and FOM Module Assembly The following numbers refer to Figure 5 on page Fiber optic connector TX Fiber optic connector RX 12-position terminal block (TB2, see also Figure 11 on page Table 2 on page 20 ______________________________________________________________________________... -
Page 23: Accessories
2; see Figure 5 on page Figure 11 on page Table 2 on page Accessories Ultrasonic Wind Sensor WS425 F/G also has the following optional accessories: Fiber optic modem, FOM111 0506-055 Figure 7 Fiber Optic Modem FOM111... - Page 24 One is supplied as standard with the Ultrasonic Wind sensor enclosed in the power supply module housing. The other is available from Vaisala as an optional accessory. Please note that FOM111 is supplied without a housing. If needed, the customer must source a proper housing locally.
-
Page 25: Chapter 3 Installation
Tape measure Packaging materials NOTE The WS425 F/G sensors and power supplies are shipped in cardboard containers with custom foam pieces to support these items during the shipment. It is very important to keep all the original packing materials in case the items need to be returned for repair service in the future. -
Page 26: Figure 8 Ws425 F/G Tower Assembly
User's Guide ______________________________________________________________________ 0506-015 Figure 8 WS425 F/G Tower Assembly The following numbers refer to Figure 8 on page WS425 F/G Cable assembly Adapter for F/G models Mounting tube Lightning rod (not provided by Vaisala) 24 ______________________________________________________________________________... -
Page 27: Installation Of Mounting Arm And Sensor Cable
0506-016 Figure 9 Sensor Cable Installation Wrap electrical tape around the wires tightly so that later it can be easily threaded through the ½" conduit. VAISALA _______________________________________________________________________ 25... -
Page 28: Installation Of Wind Sensor
User's Guide ______________________________________________________________________ Installation of Wind Sensor Open the sensor shipping box and remove the sensor. Take the wind sensor and connect the cable connector to it. Then insert the sensor over the end of the adapter. The sensor needs to be rotated until its alignment pin slides into the slot of the adapter. -
Page 29: Connecting Lightning Ground
Figure 10 on page WS425PowerUS or WS425PowerEU power supply Power supply mounting plate Pole mast installation plate (not provided by Vaisala) Pole mast (not provided by Vaisala) Connecting Lightning Ground Connect the existing ground wire to the threaded ground stud at the bottom left of the power supply with the provided lock washer and nut found in the mounting kit assembly. -
Page 30: Connecting Fiber Optic Cable
User's Guide ______________________________________________________________________ Connecting Fiber Optic Cable The fiber optic cable and the power cable share the same conduit. WARNING Before proceeding make absolutely sure that the AC power is turned off at the host system power distribution system. Then take an AC voltmeter and measure the AC voltage between the black wire and each of the green white and yellow wires;... -
Page 31: Connecting Ac Power
Connect the 12 ring lugs of the sensor interface cable to the 12- position terminal block (see Figure 11 on page 30). Follow the numbering scheme next to the terminal block and on the labels of the individual wires. VAISALA _______________________________________________________________________ 29... -
Page 32: Figure 11 Power Supply Terminal Blocks
User's Guide ______________________________________________________________________ 0506-071 Figure 11 Power Supply Terminal Blocks The following numbers refer to Figure 11 on page AC power terminal block Terminal block 1 (TB1) Terminal block 2 (TB2) 30 ______________________________________________________________________________... -
Page 33: Power Supply Terminal Blocks
Connect a laptop to the TEST connector in the power supply with an RS-232 cable. Run the Diagnostics Program on the laptop. Choose the option that connects the sensor to the laptop with the system disconnected. Issue the WA command. The sensor must respond with a P status. VAISALA _______________________________________________________________________ 31... -
Page 34: Aligning The Wind Sensor
User's Guide ______________________________________________________________________ Place the verifier over the sensor and completely cover it with the included bag. Pull the bag drawstrings to close it off at the sensor alignment adapter. Issue five WA commands spaced at least five seconds apart. All five responses must have P status. -
Page 35: Compass Alignment With Mast Adapter
Loosen the three set screws of the clamp at the bottom of the sensor alignment adapter and rotate the sensor so that the heads marked with the N and with the S are exactly aligned to north and south when the tower is set up. Tighten the clamp screws. VAISALA _______________________________________________________________________ 33... -
Page 36: Figure 13 Correctly Alignedws425 F/G Sensor
User's Guide ______________________________________________________________________ Raise the tower to the vertical position. Figure 13 on page 34 shows the correct alignment. 0506-072 Figure 13 Correctly AlignedWS425 F/G Sensor 34 ______________________________________________________________________________... -
Page 37: Figure 14 Adjusting The N-S Heads
The installer is too far to the left. The installer is in line with the sensor. The appearance of the sensor is shown when the installer is in the correct position. The sensor, however, is not correctly aligned. VAISALA _______________________________________________________________________ 35... - Page 38 User's Guide ______________________________________________________________________ 36 ______________________________________________________________________________...
-
Page 39: Chapter 4 Operation
Chapter 4 ________________________________________________________________ Operation CHAPTER 4 OPERATION This chapter contains information needed to operate Vaisala Ultrasonic Wind Sensor WS425 F/G. Power On/Off The power switch is located in the power supply enclosure at the top left. When turned on, the two LEDs labeled +5 V and +12 V will be turned off if their respective supply is operational. -
Page 40: Diagnostic Operation
RS-232 communications and sets the RTS and DTR lines to the desired states. RS-232 Data Format Ultrasonic Wind Sensor WS425 F/G communicates via an RS-232 serial interface. The host system sends American Standard Code for Information Interchange (ASCII) characters to the Ultrasonic Wind sensor and waits for the appropriate response. -
Page 41: Command Set
Return sensor measurement with reduced signal amplitude The WA command is executed by the ASOS at an interval of between one and thirty seconds. For the WA command, the sensor responds to the ASOS interrogation poll within 250 milliseconds of receiving the VAISALA _______________________________________________________________________ 39... -
Page 42: Wb Command
User's Guide ______________________________________________________________________ request. The WD, WT, WF, and WR commands are executed by the ASOS periodically to perform diagnostic checks. The WH, WS, WSST, WSTK, WCDV, and WATE commands are primarily initiated by an operator accessing the sensor via an external laptop through the sensor's RS-232 port. -
Page 43: Wa Command
If this message does not appear prior to the ready indication, you may assume the sensor calibration remains intact. WA Command This command requests the averaged wind speed and direction message with peak winds. The command format is: WA CR LF VAISALA _______________________________________________________________________ 41... -
Page 44: Example Of The Wa Command Message
User's Guide ______________________________________________________________________ The sensor response to the WA command consists of the averaged wind speed and direction data, peak wind speed, and associated direction. The average wind speed is a scalar running average of the fundamental one second interval wind speed measurement made by the sensor. The average direction is a unit vector running average over the same run length set with the WJ command. -
Page 45: Wl Command
The sensor response to the WL command indicates the status of heater control after execution. In this mode the sensor automatically controls the operation of the transducer heaters, based on an internal sensor algorithm. The response to this command is the following: Heaters on automatic control CR LF VAISALA _______________________________________________________________________ 43... -
Page 46: Wm Command
User's Guide ______________________________________________________________________ WM Command This command locks the heater function ON. The command format is: WM CR LF The sensor response to the WM command indicates the state of the transducer heaters after execution. In this mode the heater has been energized by the external command. -
Page 47: Ws Command
P Path 1 signal quality index 99 CR LF P Path 2 signal quality index 99 CR LF P Path 3 signal quality index 99 CR LF P Path 4 signal quality index 99 CR LF P Path 5 signal quality index 99 CR LF VAISALA _______________________________________________________________________ 45... -
Page 48: Wj Command
User's Guide ______________________________________________________________________ The test limits for the various tests are as listed below: Heater voltage good in range 18.0 to 26.0 V Array heater resistance good in range 4.0 to 6.0 Heaters off voltage good if below 0.5 V 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... -
Page 49: Wd Command
The command format is: WF CR LF The WF command returns a fixed pattern of data. This command is typically used to verify the communications link. The data fields are fixed at the following values: Status Wind direction VAISALA _______________________________________________________________________ 47... -
Page 50: Example Of The Wf Command Message
User's Guide ______________________________________________________________________ Peak wind direction Wind averaging time Peak wind averaging time Wind speed 876.5 Peak wind speed 432.1 Example of the WF Command Message The following is an example of the output from the sensor for the WF command: WFF6785672109876.5432.1K99xx Table 5... -
Page 51: Wate Command
(firmware revision, sensor status). The response to the WR command contains the following: ASOS Ice-Free Wind Sensor CR LF Manufactured by Vaisala USA Inc. CR LF Model number WAS 425NWS Firmware version 2.01 CR LF Initializing ….CR LF... - Page 52 P Path 3 signal quality index XX P Path 4 signal quality index XX P Path 5 signal quality index XX Wait for reset... ASOS Ice-Free Wind Sensor Manufactured by VAISALA USA INC. Model number 425 NWS Firmware version v4.50 Internal version v4.00 Initializing...
-
Page 53: Wcal Command
CAUTION – Anemometer calibration MUST ONLY be performed with Vaisala Verifier and bag in place on the anemometer. Do you wish to proceed? (Y/N) At this time, the operation may be aborted by responding with N. Do not respond with Y unless the verifier and bag are already in place. -
Page 54: Wh Command
User's Guide ______________________________________________________________________ Calibration in progress CR LF When the calibrate function completes successfully, the sensor response will be the following: Calibration successful, saving parameters CR LF The sensor will save the parameters calculated in the non-volatile memory. After the save completion, the sensor will perform a complete power on the initialization sequence. - Page 55 Peak wind speed and direction averaging time = ? CR LF Perform and report extended diagnostic tests CR LF Return fixed data in WA command format CR LF Reset sensor CR LF WCAL Perform Sensor Self Calibration CR LF Display this help menu CR LF VAISALA _______________________________________________________________________ 53...
-
Page 56: Wt Command
User's Guide ______________________________________________________________________ WT Command This command requests the short response BIT results and status. The command format is: WT CR LF This command is an abbreviated version of the verbose BIT results and status command. Field descriptors are omitted and only pass/fail status and measured value are reported. -
Page 57: Wsst Command
The static speed of sound output is a ten second running average of individual static speed of sound measurements calculated each second. The sensor calculates a new sonic temperature from this running average of static speed of sound each second. The sensor VAISALA _______________________________________________________________________ 55... -
Page 58: Wstk Command
User's Guide ______________________________________________________________________ response can be calibrated to a known ambient temperature with the WSTK command below. The output is of a fixed character length with 5 characters for the static speed of sound and 6 characters for the sonic temperature. Positive temperatures at or under 99.9°... -
Page 59: Wcdv Command
If the command returns three 20000 values in the first row and six 0 values in the second row, these are the default values and the sensor is uncalibrated. Be sure to run the WCAL command before deploying if this is the case. VAISALA _______________________________________________________________________ 57... - Page 60 User's Guide ______________________________________________________________________ 58 ______________________________________________________________________________...
-
Page 61: Operating Principle
CHAPTER 5 OPERATING PRINCIPLE This chapter provides you with a brief explanation of the operating principles of Vaisala Ultrasonic Wind Sensor WS425 F/G and its power supply. Wind Measurement Principle The Ultrasonic Wind sensor uses ultrasonic technology. It has an on- board micro controller that captures and processes data and performs serial communications. -
Page 62: Figure 15 Ultrasonic Wind Sensor Block Diagram
User's Guide ______________________________________________________________________ – 0505-216 where Vw = Wind velocity Distance between two transducers Transit time in the positive direction Transit time in the negative direction Measuring the six transmit times allows Vw to be computed for each of the three ultrasonic paths, which are offset to each other by 120°. The computed wind speeds are independent of altitude, temperature, and humidity even though the velocity of sound affects individual transit times because the algebra that produces the formula above cancels the... -
Page 63: Power Supply Operating Principle
PC talks to the sensor, host system is disconnected PC talks to the host system, sensor is disconnected Host system is connected to the sensor with the PC listening to both the transmit and receive lines VAISALA _______________________________________________________________________ 61... -
Page 64: Figure 16 Power Supply Block Diagram
US & European power supplies (WS425PowerUS and CAUTION WS425PowerEU) have different primary wiring. Do not attempt to connect WS425PowerUS to 240VAC voltage or WS425PowerEU to 115 VAC voltage! The enclosure heat LED is always off for the model Ultrasonic Wind NOTE Sensor WS425 F/G. 62 ______________________________________________________________________________... -
Page 65: Verifier Associated Operations
The same crystal controls the baud rate for serial communications. If the crystal drifts more than a few percent, the sensor will not communicate any more. This test gives a very high confidence that the sensor will work over its measurement range. VAISALA _______________________________________________________________________ 63... - Page 66 User's Guide ______________________________________________________________________ 64 ______________________________________________________________________________...
-
Page 67: Chapter 6 Maintenance
Visual Inspection of Ultrasonic Wind Sensor WS425 F/G WS425 F/G anemometer 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. - Page 68 User's Guide ______________________________________________________________________ seen on each ceramic transducer. The soldering spots on the ceramic transducer must be oriented outside the array. For the correct alignment, see Figure 17 on page 67. Do not rotate the transducer if the soldering spot is not in the correct location. Replace the anemometer.
-
Page 69: Preventive Maintenance
Preventive Maintenance It is recommended that preventive maintenance be performed every 12 months. Laptop computer RS-232 cable with DB9 connector Diagnostic Program (to run on laptop computer) Verifier and Cloth Bag Equipment needed: VAISALA _______________________________________________________________________ 67... -
Page 70: Figure 18 Field Verifier
User's Guide ______________________________________________________________________ 0506-021 Figure 18 Field Verifier 0506-021 Figure 19 Field Verifier with Cloth Bag 68 ______________________________________________________________________________... -
Page 71: Corrective Maintenance
Close the power supply door. Corrective Maintenance The following flow charts may be used to diagnose problems with the wind system. If the sensor is not responding to the system polls, start with the flow chart in Figure 20 on page VAISALA _______________________________________________________________________ 69... -
Page 72: Figure 20 Fault Isolation Flow Chart: Sensor Not Responding Part 1
User's Guide ______________________________________________________________________ If the sensor is responding to the WA command but the status is F, start with the flow chart in Figure 22 on page If the sensor is responding to the WA command but the status is H, start with the flow chart in Figure 23 on page 0506-022... -
Page 73: Figure 21 Fault Isolation Flow Chart: Sensor Not Responding Part 2
Chapter 6 ______________________________________________________________ Maintenance 0506-023 Figure 21 Fault Isolation Flow Chart: Sensor Not Responding Part 2 VAISALA _______________________________________________________________________ 71... -
Page 74: Figure 22 Fault Isolation Flow Chart: Sensor Responds With F Status
User's Guide ______________________________________________________________________ 0506-024 Figure 22 Fault Isolation Flow Chart: Sensor Responds with F Status 72 ______________________________________________________________________________... -
Page 75: Figure 23 Fault Isolation Flow Chart: Sensor Responds With H Status
Chapter 6 ______________________________________________________________ Maintenance 0506-025 Figure 23 Fault Isolation Flow Chart: Sensor Responds with H Status VAISALA _______________________________________________________________________ 73... -
Page 76: Wind Sensor Removal And Installation
User's Guide ______________________________________________________________________ Wind Sensor Removal and Installation Removal Procedure Open the power supply cover and turn off the power. Tilt over the wind mast or tower to access the sensor. On the adapter, loosen the single screw close to the sensor. Do not loosen any of the three screws that are used to fasten the adapter to the mounting tube (see Figure 3 on page... -
Page 77: Power Supply Removal And Installation
Make sure not to pull the fiber optic cables. Remove the power supply with its mounting plate from the tower by removing the top screws and loosening the two bottom screws. Figure 4 on page VAISALA _______________________________________________________________________ 75... - Page 78 User's Guide ______________________________________________________________________ Remove the power supply from the mounting plate by loosening the four flat head screws. Use the same four screws and mount the new power supply to the mounting plate. Tighten the four screws down. 10. Lift this assembly and slide the two slots at the bottom of the mounting plate over the two mounting screws that were left on the tower.
-
Page 79: Power Supply Module Removal And Installation
3-inch radius. Remove 11 of the 12 Phillips head mounting screws that hold the module in place. Leave the screw in between the fiber optic modem VAISALA _______________________________________________________________________ 77... -
Page 80: Installation Procedure
User's Guide ______________________________________________________________________ TX and RX fiber connectors in place. Save the ground wire for use when installing the new module. While holding the module so that it will not fall, remove the last Phillips head screw and remove the module. Installation Procedure While holding the module so that it will not fall, install the Phillips head screw in between the fiber optic modem TX and RX fiber... -
Page 81: Removal Procedure
Untie the optical fibers and connect them to the corresponding RX and TX connectors on the fiber optic modem. Observe the 3-inch minimum bending radius limitation of the fibers, do not bend them more sharply than at a 3-inch radius. Tighten them gently. VAISALA _______________________________________________________________________ 79... -
Page 82: Sensor Interface Cable Removal And Installation
User's Guide ______________________________________________________________________ Sensor Interface Cable Removal and Installation Open the power supply door and turn off the power to the wind sensor. Lower the wind mast or tower. On the adapter, loosen the single screw close to the sensor. Do not loosen any of the three screws that are used to fasten the adapter to the mounting tube (see Figure 3 on page... -
Page 83: Firmware Download
You will need this value later in step 9. Issue the Close button to return to the Main window of the Download Module. Issue the Close button to return to the Main window of the Diagnostics Program. VAISALA _______________________________________________________________________ 81... -
Page 84: Recovery Procedure
User's Guide ______________________________________________________________________ Select the sufficient Commport baud rate based on the value given at step 6 by using one of the 2400, 4800, or 9600 and the Change Commport Baudrate buttons. 10. Issue the START TEST Continuous Data button to get data from the sensor. -
Page 85: Technical Support
+358 9 8949 2790 Vaisala Service Centers If the product needs repair, please contact the Vaisala Service Center in your region or closest to you and then proceed as instructed. Contact information for Vaisala Service Centers is given below. - Page 86 Phone: +81 3 3266 9617, Fax: +81 3 3266 9655 E-mail: aftersales.asia@vaisala.com BEIJING SERVICE CENTER Vaisala China Ltd., Floor 2 EAS Building, No. 21 Xiao Yun Road, Dongsanhuan Beilu, Chaoyang District, Beijing, P.R. CHINA 100027. Phone: +86 10 8526 1199, Fax: +86 10 8526 1155 E-mail: china.service@vaisala.com...
-
Page 87: Chapter 7 Technical Data
Chapter 7 ____________________________________________________________ Technical Data CHAPTER 7 TECHNICAL DATA This chapter provides the technical data of the product and lists the field replaceable units, and the accessories. VAISALA _______________________________________________________________________ 85... -
Page 88: Field Replaceable Units
WS425PowerEU Module assembly, power supply 4257023 WS425 F/G Fiber optic modem FOM111 Cable assembly, sensor WS425 F/G 4253100 Installation kit for ASOS, WS425 F/G 4257100 Field verifier assembly, WS425 F/G WS425VerifierB Specifications Table 7 Wind Speed Property Description / Value Measurement range 0 ... -
Page 89: Accessories
Installation kit for ASOS 4257100 Field verifier assembly WS425VerifierB US and EU power supplies have different primary wiring, do not CAUTION connect US power supply to 240 VAC voltage or EU power supply to 115 VAC voltage! VAISALA _______________________________________________________________________ 87... -
Page 90: Drawings
User's Guide ______________________________________________________________________ Drawings 0607-008 Figure 24 Sensor Cable Wiring Diagram 88 ______________________________________________________________________________... - Page 91 *M210713EN*...