METEOROLOGICAL & HYDROLOGICAL OBSERVATION SYSTEMSINCE 1948

KV-5020
Marine Wind Vane/AnemometerFeatures
・Built-in NMEA output indispensable for ocean going vessels
・Stepping motor-driven pointers that are resistant to vibration and offer fairly accurateindication
・LED illumination with dimmer for long life
・Digital indicator accommodates signals of your choice (optional)
・Simplified vessel speed/course signal transmitter (optional) can be installed(using GPS / magnetometric sensor)
・Additional indicators can also be installed

VDRcapable

Wind speed/directiontransmitter

Product overview
The KV-5020 marine wind vane/anemometer sends both wind direction and speed signals
simultaneously from the transmitter to the indicator for remote observation.
The transmitter is a windmill type and is used in combination with the wind speed/direction
indicator. The indicator, which has an analogue face, receives and processes the transmitter
signals to drive the pointers.

Optional equipment
KV-5025 true windspeed/direction indicator

Remote dimmer switch

Simplified vessel
speed/course
signal transmitterWind speed/direction indicator

Japan Meteorological Agency's oceanographic research vessel Keifu
Maru(on which Koshin Denki's marine weather observation devices areused)METEOROLOGICAL & HYDROLOGICAL OBSERVATION SYSTEMSINCE 1948

Configuration/Block Diagram
Wind speed/direction indicator
Wind speed/direction
transmitter
6-wire signal line

Serial current-loop signal input→
Power source
87 - 264 VAC, 47 - 440Hz

Serial current-loop signal output←
RS-232C or RS-422 signal output←

Specifications
Wind speed/direction transmitter
TypeWind speed detection
Wind direction detection
Start wind speed
Wind speed resistance
Measurement rangeWind direction
Measurement accuracy

CableCable connection method
WeightCoating color
Working temperature range

Wind speed/direction indicator

Propeller
Measurement range
Optical pulse; Brushless
Wind speed
8-bit optical encoder; Serial signal output Indicator type2m/s or less
90m/s（in wind tunnel tests）
Wind speed: 2 - 60 m/s
All directions
Wind speed:Computation type10m/s or less: Within +/-0.5m/s
10m/s or more: Within +/-5%
Wind direction:
Within +/-5°
6-core shielded cable
Input signal
Via terminal
Approx. 2.5kg
Munsell 2.5G7/2 Semi-glossy-20 to +50℃
Output signal
Pointer driver

Response time
Wind speed/direction transmitterWind speed/direction indicator465

400030330

φ2 5 060

050306060

20245

550
350

Mountingdimensions

9090

AFTER
180

180

80
90

20 100120
150

501012021040
WIND SPEED

RIGHT

240

150

7030

WIND DIRECTION

12060

304030300
270 LEFT

900m/s60Lighting
Power source
Coating color
WeightOuter dimensions
Ambient conditions

100110kt

150DIMMER）
All directions（0 - 360°
0 - 60 m/s or 0 - 115 kt
Relative wind direction（instantaneous）:
Indicating range: 0 - 360°
Relative wind speed（instantaneous）:
Indicating range: 270°（60m/s）
kt or m/s
CPU vector operation
Data sampling rate:（for both wind speed and direction）
0.25sec.
Data processing:instantaneous, second smoothing
Dedicated wind speed/direction signals（6-wire）
Wind direction:
256-segment, 8-bit gray code serial signal
Wind speed: 24 pulses / rev.
Serial current loop
RS-232C or RS-422
Serial current loop
Wind speed and direction pointers directly
driven by stepping motors.
0.9°/ step（corresponding to 0.2m/s wind speed）
2.4sec. per 180°
（corresponding to 40m/s wind speed）
LED（with dimmer）
87 - 264 VAC, 47 - 440 Hz
Munsell 2.5G7/2 semi-gloss
Approx. 7.5kg
400（W）x 245（H）x 120（D）
Working temperature range: -10 to +50℃
Working humidity range:
20 - 95%（no condensation）

3-φ12

Optional equipment
136

N
φ124

φ150

Remote dimmer switch
KV-5025 true wind speed/direction indicator
Simplified vessel speed/course signal transmitter

HEAD OFFICE・METEOROLOGICAL INSTRUMENTS DIVISIONURL : http://www.koshindenki.com
1-20-19 Jiyugaoka, Meguro-ku, Tokyo 152-0035
TEL : +81(0)3-3717-0101 FAX : +81(0)3-3718-0101

SENDAI FACTORYSENDAIFACTORY

51-1 Sakaino Aza Hayama, Akiu-Cho, Taihaku-ku, Sendai-City 982-0242
TEL : +81(0)22-397-2121 FAX : +81(0)22-397-2323 ｅ-mail： sendaif＠koshindenki.com＊The specifications in this catalog may be changed without rprio
notice to incorporate improvements.

FEB.07-SC0025-1-1K-MP