Omega Products WMS831 Installation Manual

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WMS831

Wireless Data Logging

Weather Station

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®

User’s Guide

®

MADE IN CHINA

Servicing North America:

U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford, CT 06907-0047 USA

Toll Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec), H7L 5A1 Canada
Toll-Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA

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Customer Service: 1-800-622-2378/1-800-622-BEST

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Engineering Service: 1-800-872-9436/1-800-USA-WHEN

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Mexico/ En Español: 001 [phone] FAX: [phone]
Latin America: [e-mail] e-mail: [e-mail]

Servicing Europe:

Benelux: Managed by the United Kingdom Office

Toll-Free: 0800 099 3344 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Czech Republic: Frystatska 184

733 01 Karviná, Czech Republic
Toll-Free: 0800-1-66342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

France: Managed by the United Kingdom Office

Toll-Free: 0800 466 342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26

D-75392 Deckenpfronn, Germany
Toll-Free: 0800 6397678 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

United Kingdom: OMEGA Engineering Ltd.

ISO 9001 Certified One Omega Drive, River Bend Technology Centre, Northbank

Irlam, Manchester M44 5BD United Kingdom
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

omega.com [e-mail]

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

®

WIRELESS DATA LOGGING WEATHER STATION

INTRODUCTION

Thank you for purchasing Omega’s Weather Station with
remote control. This compact and easy-to-use product
features a wide variety of time and weather data, such as
precise atomic time, perpetual calendar, air temperature,
relative humidity, barometric pressure, wind speed and
direction, rainfall, and etc.

WMS831

USER’S MANUAL

PACKAGE CONTENTS

In this package you will find:

• One Main Unit (receiver)

• One Rain Gauge (remote rain sensor/tra

One Anemometer (remote wind sensor/transmitter)

•

• One Three-Channel Temperature & Humidity Sensor (transmitter)

• One 7.5V AC/DC Adapter

• Mounting Hardware with wrench tool

• One User’s Manual

Components:

• Main Unit

• AC/DC 7.5V power adaptor

• Thermo Hygrometer Sensor

• Rain Gauge

Consists of:

` • A

nemometer

Consists of:

• Mounting hardware:

INSTALLATION

Our Omega’s Full Weather Station #WS821 operates at 433MHz radio frequency, so no wire installation
is required between the main unit (receiver) and the remote weather sensors (transmitters). The remote
we

ather sensors include a thermo-hygrometer (temperature and humidity) sensor, anemometer (wind
sensor) and a rain gauge (rain sensor). All data measured by these remote sensors is transmitted to the
main unit wirelessly, with the operating range up to 328 feet (100 meters) in the open area. The
Anemometer and a rain gauge must be placed outdoors to measure weather elements. Remote thermo­hygrometers can be placed indoors or outdoors, depending on the location where the temperature and
humidity

are to be measured. If you intend measuring outdoor temperature and humidity, place the

remote sensor outdoors, preferably not in the direct sunlight.

NOTE

: It is critical to assemble and power up all of the remote weather sensors BEFORE setting up the

main unit.

NOTE

: It is critical to power up and test communication between all of the weather sensors and the

main unit BEFORE permanently mounting them outside.

Funnel shaped top with battery compartment
Rain Gauge bucket
Bucket see-saw mechanism
Protective scree

Wind Cups
Wind Vane
Anemometer arm
Anemometer base

4 screws for securing rain gauge to the flat surface;
4 screws for securing anemometer to vertical surface

nsmitter)

n

BEFORE YOU BEGIN

• We recommend using alkaline batteries for the remote weather sensors and the main unit when
temperatures are above 32°F (0°C). We recommend using lithium batteries for the remote weather
sensors when temperatures are below 32°F (0°C).

• Avoid using rechargeable batteries. (Rechargeable batteries cannot maintain correct power
re

quirements).

• ALWAYS install batteries in the remote weather sensors before the main unit.

• Insert batteries before first use, matching the polarity in the battery compartment

• Remove protective plastic screen from LCD display (if any).

• During an initial setup, place the main unit close to the remote weather se

After reception is established (all of the remote readings will appear on the main unit’s display),

•
position the remote sensors and the main unit within the effective transmission range of up to 328
feet (100 meters). Ideally they should be placed within the line of sight of the main unit. See
placement tips in the user manual for each remote weather sensor separately.

• Transmission range may
The main unit must be placed indoors.

•

• The effective operating range may be influenced by the surrounding building materials and how the

receiver (main unit) and transmitters (weather sensors) are positioned.

• Place the remote weather sensors so that they face the main unit (receiver), minimizing obstructions
such as doors, walls, a

NOT

E

: When the temperature falls below freezing, the batteries in the outdoor remote weather sensors

may have reduced voltage supply and a shorter effective range. We recommend using lithium
batteries at temperatures of 32°F (0°C) and below.

IMPORTANT: Make sure that the remote weather sensors are easily accessible for cleaning and

THERMO-HYGROMETER SENSOR

FEATURES

1

maintenance.We recommend cleaning the remote weather sensors periodically, a
and

• Remote data transmission to the main unit via 433 MHz signal

• 328 feet (100 meters) transmission range without interference

• LCD display of measured temperature and humidity

• Three (3) transmission channels selection

• Case can be wall mounted using built-in hanger

• Up to three T-H sensors per station are permitted

be affected by trees, metal structures and electronic appliances.

nd furniture.

debris may affect sensors accuracy.

nsors.

s the dirt

A. LED INDICATOR

• Flashes once when the remote sensor
transmits a reading to the main unit.

• Flashes twice when battery power is low.

B. BATTERY COMPARTMENT

Holds 2 “AA” batteries

C. RESET

Resets all readings

D. CHANNEL SWITCH

Selects the desired transmission channel
from 1 to 3

E. WALL-MOUNT RECESSED OPENING

Attaches the remote sensor to the wall

NOTE

: Install the batteries and select the channel before mounting the sensor.

BATTERY INSTALLATION

• Remove the screws from the battery compartment with a small Phillips screwdriver.

• Set the channel 1 through 3. The switch is located in the battery compartment. Channel 1 is

typically selected if only one remote sensor is being used.

• Install 2 “AA” batteries (not included) matching the polarities shown
Replace the battery compartment door and secure the screws.

•

in the battery compartment.

• Secure the thermo-hygrometer remote sensor in the desired location.

MOUNTING

• The remote thermo-hygrometer sensor can be placed on the flat surface or mounted on the wall in
vertical position.

• Use the wall mount hardware and screws provided when mounting the thermo-hygrometer sensor
on the wall.

PLACEMENT TIPS:

• The remote thermo-hygrometer sensor should be placed in the area with a free air circulation and
sheltered from the direct sunlight and an extreme weather conditions.

• Ideally, place the thermo-hygrometer sensor above the natural surfaces (such as a grassy lawn).

• Avoid placing the thermo-hygrometer sensor near sources of heat such as chimneys and heating

elements.

• Avoid any areas collecting and r
st

ructures, paving, patios and decks.

• The international standard for the valid air temperature measurements is 4 feet (1.25meters)
above the ground.

adiating a heat from the sun, such as metal, brick or concrete

BATTERY INSTALLATION

• Unlock the funnel-shaped top on the rain gauge by turning both knobs on the sides in a Counter­clockwise direction.

• Remove the funnel-shaped top lifting it off the rain gauge bucket.

•

Remove 7 small screws from the battery compartment cover using a small Phillips screwdriver

• Insert 2 “AA” batteries (not included), matching the polarities as shown in the battery compartment.

• Replace the battery compartment door and secure the screws.

• Insert the funnel-shaped top into the rain gauge bucket and secure it into place by turning the knobs

clockw

ise.

MOUNTING

• Make sure that the rain gauge bucket is level – check if the ball bearing inside the bucket is at the
midpoint of the leveler.

• Place the protective screen over the top to protect the rain gauge from the debris.

• Mount the rain gauge in place using mounting hardware provided.

• Make sure that the rain gauge is in open area where precipitation falls directly into the gauge’s

bucket, idea

PLACEMENT TIPS

• The rain gauge should be placed in an open area away from walls, fences, trees and other
coverings, which may reduce the amount of rain collected in the bucket. Additionally, trees and
rooftops may be sources of pollen, leaves and other debris.

• To avoid rain shadow effects, place the rain gauge two to four times the height of any nearby
obstruction.

• It

lly 2-3 feet above the ground.

is important that excess rain can flow freely away from the rain gauge.

RAIN GAUGE

FEATURES

• Precipitation measurement

• Remote rainfall data

transmission to the main unit
via 433 MHz signal

• 100 feet (30 meters)
transmission range without
interference

• Built-in insta
Non-corrosive protective

•
screen

llation level

A. RAIN GAUGE BUCKET

Holds all rain gauge components

B. KNOB

Secures the top on the rain gauge bucket

C. RAIN GAUGE BUCKET FEET

Allows securing the rain gauge on its place

D. FUNNEL-SHAPED TOP WITH BATTERY COMPARTMENT

Contains battery compartment and rainfall counting electronics

E. BATTERY COMPARTMENT

Holds 2 “AA” size batteries

F. SCREWS

Secure battery compartme

BUILT-IN LEVELER

G.

nt cover

Allows leveling rain gauge on the surface

H. BUCKET SEE-SAW MECHANISM

Collects the rainfall in one of its containers and self-empties once full

I. PROTECTIVE SCREEN

Protects the rain gauge funnel from debris

ANEMOMETER (WIND SENSOR)

FEATURES

• Wind speed and wind direction measurement

• Remote wind speed and wind direction

data transmission to the main unit via
433 MHz signal

• Operating range 100 feet (30 meters)

• Wall or pole mount

A. WIND VANE

Measures wind direction

B. WIND CUPS

Measures wind speed

C. ANEMOMETER BASE

• Holds battery comp

•

Allows mounting the anemometer vertically

artment

D. ANEMOMETER ARM

Keeps anemometer assembly together

E. WIND CUPS SHAFT

Holds wind cups on the anemometer arm

F. BATTERY COMPARTMENT

Holds 2 “AA” batteries

G. WALL MOUNT SCREW OPENINGS

Allows securing the anemometer in place

H. BATTERY COVER

Allows securing 2 “AA” batteries on the anemometer base

2