Onset S-WCC Specifications

R.M. Young Marine Wind Sensor Adapter (S-WCC-M003) Manual

This document provides instructions for connecting the R.M. Young 05106 Marine Wind Sensor
to the S-WCC-M003 Onset adapter to allow the wind sensor to be used with a smart sensor­compatible HOBO® station.

Note: Refer to the R.M. Young instruction manual for your wind sensor for additional
information as needed.

Specifications

Wind Speed/Gust* Wind Direction

R.M. Young Marine Wind
Sensor Adapter

S-WCC-M003

Tools Required:

• Screwdriver

• 27 mm (1-1/16 in) wrench

(or adjustable wrench)

Measurement Range 0 to 50 m/s (0 to 111 mph) 0 to 355 degrees, 5 degrees dead

Accuracy 0.20 m/s (0.44 mph) 1.4 degrees

Resolution 0.20 m/s (0.44 mph) 1.4 degrees

Operating Temperature Range -40°C to 75°C (-40°F to 167°F)

Environmental Rating Weatherproof

Bits per Sample 8 for each channel, 24 total

Number of Data Channels* 3

Measurement Averaging Option Automatic averaging (see Measurement Operation below)

Cable Length from Adapter to
Data Logger*

Cable Length from Adapter to
Wind Sensor

Housing Dimensions 14 cm (5.5 in) long x 2.7 cm (1.05 in) diameter; Add 5.6 cm (2.2 in) to

* A single HOBO station can accommodate 15 data channels and up to 100 m (328 ft) of smart sensor cable (the digital

communications portion of the sensor cables). Smart Sensor Extension Cable Part No. S-EXT-M0xx

3 m (9.8 ft)

45.7 cm (18 in)

length for grommets

The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).

band

Measurement Operation

Wind speed and direction measurements are averaged over the logging interval or a 3-second
timeframe (whichever is greater). If you set up the sensor to log faster than every 3 seconds,
the same sensor reading will be recorded until a new 3-second average is calculated. For
example, if the sensor is logging at a 1-second interval, the sensor will report the same wind
speed and direction (its calculated average) for three samples before calculating and reporting
a new value for another three samples. Gust speed is the highest three-second wind recorded
during the logging interval.

Direction Averaging

Unit vector averaging is used to determine wind direction because traditional averaging would
produce inaccurate results. For example, three measurements of 350, 11, and 12 degrees—
which are all winds from the north—averaged together would result in 126 degrees, which
incorrectly indicates a southeasterly wind. Instead, the vector components (North/South and
East/West) for each wind measurement are calculated every three seconds for the duration of
the logging interval. At the conclusion of the logging interval, the North/South and East/West
components are averaged and then re-combined to calculate the average wind direction for the
logging interval.

12196-F MAN-S-WCC

R.M. Young Marine Wind Sensor Adapter (S-WCC-M003) Manual

Connecting the Wind Sensor to the Adapter

Step 1: Drill Grommet

The grommet on the non-cable end of adapter housing must be
drilled in order to accept the cable from the wind sensor.
Unscrew the grommet from housing. Next, accurately measure
the diameter of the wind sensor cable’s jacket (diameters vary
from sensor to sensor) and then drill a hole through the center
of the grommet’s rubber insert. The diameter of the hole
should only be just large enough for the cable to pass through.
Clean out any debris from the insert. Note: To facilitate drilling,
we recommend putting the grommet into a freezer for about
two hours before drilling to stiffen the rubber, and then to use
a sharp drill.

Step 2: Grease Drilled Grommet and Install onto Wind
Sensor Cable

Using supplied packet, apply a coating of grease to the drilled
hole of grommet from step 1 and then slide grommet onto
wind sensor cable jacket in orientation shown below (loosen
grommet’s dome nut if necessary).

Step 3: Access PCB Screw Terminal Block

Loosen dome nut on grommet where the black modular jack
cable exits the adapter housing (do not unscrew the grommet
body itself from housing), then gently push cable through
housing until the screw terminal block is accessible on the PCB.

Step 4: Connect Wind Sensor Cable to Screw Terminal
Block

Connect shield and wires to PCB screw terminal block as shown
in diagram below. Be sure wires are fully secured in the
terminals.

Step 5: Secure Cable to PCB

Feed supplied cable ties through holes at end of PCB in a
crossing pattern, then tighten around cable jacket and trim
ends.

Step 6: Re-assemble Adapter

Gently pull PCB back into adapter housing. Slide grommet down
the wind sensor cable and then use wrench to fully tighten
grommet body into the housing. Next, hand tighten dome nut
onto body and then use wrench to tighten an additional ½ turn.
Dome nut must be snug, but should not be over tightened.
Finally, in a similar manner, re-tighten dome nut loosened in
step 3.

Step 7 – Mount the Wind Sensor

The diagram below shows the recommended mounting for the
wind sensor. Secure the adapter to the mast with two cable ties
crossed together. Be sure to put drip loops on either side of the
adapter housing as shown below to protect the adapter from
water. Secure the cables to the mast with cable ties at the end
of each drip loop.

R.M. YOUNG MARINE WIND SENSOR

Drill grommet, grease hole, and
install onto wind sensor cable
(steps 1 and 2)

Cable PCB

SHIELD (Earth Ground)
BLACK (Wind Direction Reference)
GREEN (Wind Direction Sign al)
WHITE (Wind Direction E xcitation Voltage)
BLUE (Wind Speed Reference)
RED (Wind Speed Signal)

Install cable ties (step 5)

EARTH GROUND
DIRECTION REFERENCE
DIRECTION SIGNAL
DIRECTION EXCITATION
SPEED REFERENCE
SPEED SIGNAL

Access PCB screw terminal block
and connect cable (steps 3 and 4)

EARTH GND
WD REF

WS REF
WS SIG

S-WCC-M003 ADAPTER

Wiring Chart

EARTH GROUND
DIRECTION REFERENCE
DIRECTION SIGNAL
DIRECTION EXCITATION
SPEED REFERENCE
SPEED SIGNAL

TO SMART SENSOR-COMPATIBLE
DATA LOGGER

RECOMMENDED MOUNTING

© 2011–2015 Onset Computer Corporation. All rights reserved. Onset and HOBO are trademarks or
1-800-LOGGERS (564-4377) • 508-759-9500
www.onsetcomp.com • [e-mail]

registered trademarks of Onset Computer Corporation. All other trademarks are the property of

their respective companies.

12196-F MAN-S-WCC