Alphatron Marine WS-12 User manual

Anemometer
WS-12
Operation & Installation Manual
www.jrc.am

Contents
I Preface..........................................................................................................3
1 Revision History..........................................................................................................................................................3
1 Introduction.................................................................................................4
2 Installation...................................................................................................5
2.1 Installation of wind sensor.......................................................................................................................................5
3 Calibration...................................................................................................6
4 Function and Operation.............................................................................7
5 Specification................................................................................................8
6 Maintenance................................................................................................9
7 Dimensional drawing............................................................................... 10
8 Appendix................................................................................................... 11
2 | Contents

I Preface
Please read this manual before installation and operation of the equipment.
1 Revision History
Version Description Date
V1.0 First release 24 - October - 2018
Table 1: Revision history
3 | Preface

1 Introduction
The Marine Anemometer WS-12 is an instrument for wind speed and direction. It can measure relative wind speed
(accuracy ±5%, min 0.1m/s), relative wind direction (accuracy 1°).
The WS-12 wind sensor must be reading representative values for the wind and therefore the wind sensor must be
reading clear wind, unobstructed by any wind shadow from structures.
System composition
Wind speed sensor Wind speed sensor has a rotor with three wind cups.
Wind direction sensor Wind direction sensor has a wind vane to drive an absolute angle sensor unit.
Holder Used to install wind speed sensor and direction sensor for fixation of junction box.
Table 2: Sensor WS-12
Principle of measurement
The wind speed sensor has a rotor with three wind cups which spins as the wind moves past the boat. The Wind speed
sensor measures how fast the rotor is spinning to calculate the wind speed.
The wind direction sensor has a wind vane which points in the direction that the wind is coming from. The wind direction
sensor electronically senses the direction the wind vane is pointing.
4 | Introduction

2 Installation
Installation of wind sensor WS-12.
2.1 Installation of wind sensor
The Wind sensor WS-12 should be installed in a place with free wind in the ship. The mounting holder has a diameter of
25~40mm and an active radius of 350mm. After finishing the installation of the main unit and the sensor, please make
the calibration.
Note a big radar antenna rotation can disturb the wind measurement. Find a location away from the radar.
Total height 588mm
Activity radius 350mm
Fixed pillar ø25~ø40mm
A
A
View A
( View A )
视图 A
标记箭头
标记箭头须平行于 船艏线，指向船头
Parallel to the stern-bowline,
Arrow points to the bow
Parallel to the stern - bow line , Arrow points to the bow
Figure 1: Installation of anemometer
Connect the wind sensor with the 5-pole connector on the delivered 25m cable. Cut the 4-pole connector and connect
the wires to a NMEA input of the AlphaWind repeater and the 24Vdc.
Connector Anemometer Connection Purpose Connection equipment side
1 +TxD 4 (white)
2 -0Vdc 2 (black)
4 -TxD 3 (blue)
5 +24Vdc 1 (red)
Table 3: Cable connection
5 | Installation

3 Calibration
There is no possibility of calibration the wind sensor other then by installation, make sure the red arrow on the wind
sensor is parallel to the stern-bow line of the ship.
6 | Calibration

4 Function and Operation
The output of the WS-12 is the NMEA sentence MWV. Below is the specifications of this sentence.
Data transmission is according to NMEA0183 standard.
Main Unit Output --MWV
$--MWV, x.x , a , x.x , a , A*hh<CR><LF>
①②③④⑤⑥
1. Wind angle, 0 to 359 degrees
2. Reference, R = Relative, T = True
3. Wind Speed
4. Wind Speed Units, K=km/h / M=m/s / N=knots
5. Status, A = Data Valid, V = Data invalid
6. Checksum
7 | Function and Operation

5 Specification
Power Supply 24 Vdc (20-32 V)
NMEA Baud rate 4800 bps
Data RS422 with NMEA0183 Standard
Dimensions Height: 588mm, Activity radius 350mm
Weight 8 kg
Table 4: Basic specifications
Working Temperature -20°C ~ +85°C
Storage Temperature -20°C ~ +85°C
Humidity 10% ~ 100% RH
Protection IP56
Table 5: Environmental conditions
Wind Speed Range 0 ~ 60m/s
Wind Speed Accuracy ±5% (min. 0.1m/s)
Wind Direction Range 0 ~ 359°
Wind Direction Accuracy ± 1°
Min. Start speed ≤0.5m/s
Table 6: Technical specifications
8 | Specification

6 Maintenance
Ice or dirt on the sensor will disturb the normal working of the sensor. Please clear the sensor from ice and dirt in time.
Regulary check the external mounting bolts to avoid looseness and the abrasion and ageing of the cables.
When the equipment breaks down, contact an Alphatron Marine service engineer in time. Please do not do the service
yourself.
9 | Maintenance

7 Dimensional drawing
FORWARD
588
131.4
106.8
350
182.5
234.5108 161.3
4xM10
5 Pole Connector
∅25-40mm
Revision: Date: Description:
Name:
Alphatron Marine BV reserves the right to change the design and specifications
All information including text and drawings are the property of © Alphatron Marine BV and is submitted as
confidential information which must not be used for any purpose other than that for which
Drawings compliant to ISO 5456-2 and ISO 129-1
Part Number:
Remark:
Title:
Size:
Dimensions:
Scale:
Approved:
Drawn:
Drawing Number:
Color:
Compass Safe Distance:
Heat Dissipation:
Power Consumption:
IP Rate:
Weight:
of the equipment without notice.
it is supplied.
www.alphatronmarine.com
WS-12
Anemometer
Alphatron Marine
110/Alhatron/WS-12
23-Oct-2018
JRI AK mm
3110.0168
23-Oct-2018
IP56 Black 8kg
A3 1:4
10 | Dimensional drawing

8 Appendix
Grade Speed (m/s) Speed (km/n)
0 0.0 ~ 0.2 <1
1 0.0 ~ 0.2 1 ~ 5
2 0.3 ~ 1.5 6 ~ 11
3 3.4 ~ 5.4 12 ~ 19
4 5.5 ~ 7.9 20 ~ 28
5 8.0 ~ 10.7 29 ~ 38
6 10.8 ~ 13.8 39 ~ 49
7 13.9 ~ 17.1 50 ~ 61
8 17.2 ~ 20.7 62 ~ 74
9 20.8 ~ 24.4 75 ~ 88
10 24.5 ~ 28.4 89 ~ 102
11 28.5 ~ 32.6 103 ~ 117
12 32.7 ~ 36.9 118 ~ 133
13 37.0 ~ 41.4 134 ~ 149
14 41.5 ~ 46.1 150 ~ 166
15 46.2 ~ 50.9 167 ~ 183
16 51.0 ~ 56.0 184 ~ 201
17 56.1 ~ 61.2 202 ~ 220
>17 ≥61.3 ≥221
Table 7: Wind grade table
11 | Appendix

All over the world,
close to the customer
JRC/Alphatron Marine B.V.
Schaardijk 23 (harbor 115)
3063 NH Rotterdam
The Netherlands
The information in this document is subject to change without notice and
does not represent a commitment on the part of Alphatron Marine B.V.
T [phone] Document name : Anemometer
F [phone] Document nr. : 1023_2
[email protected] Version : V1.0
www.jrc.am ©All rights reserved Alphatron Marine B.V.
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