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Milan, Italy

MIL

1

SE

Montevideo, Uruguay

MVD

-3

SM

Moscow, Russia

MOW

3

SK

Munich, Germany

MUC

1

SE

Nairobi, Kenya

NBO

3

NO

Nanjing (Nanking), China NKG

8

NO

Naples, Italy

NAP

1

SE

New Delhi, India

DEL

5.5

NO

Odessa, Ukraine

ODS

2

SE

Osaka, Japan

KIX

9

NO

Singapore, Singapore

SIN

8

NO

Sofia, Bulgaria

SOF

2

SE

Stockholm Arlanda, Sweden ARN 

1

SE

Sydney, Australia

SYD

10

SA

Tokyo, Japan

TKO

9

NO

Tripoli, Libya

TRP

2

NO

Vienna, Austria

VIE

1

SE

Warsaw, Poland

WAW

1

SE

Zürich, Switzerland

ZRH

1

SEA

WORLD CITIES

City

Code

Zone DST

City

Code

Zone DST

Offset

Offset

Addis Ababa, Ethiopia

ADD

3

NO

Cairo, Egypt

CAI

2

sg

Adelaide, Australia

ADL

9.5

SA

Calcutta, India 

(as Kolkata)

CCU

5.5

NO

Algiers, Algeria

ALG

1

NO

Cape Town, South Africa

CPT

2

NO

Amsterdam, Netherlands AMS

1

SE

Caracas, Venezuela

CCS

-4

NO

Ankara, Turkey

AKR

2

SE

Chihuahua, Mexico

CUU

-6

SU

Asunción, Paraguay

ASU

-3

sp

Copenhagen, Denmark

CPH

1

SE

Athens, Greece

ATH

2

SE

Córdoba, Argentina

COR

-3

NO

Bangkok, Thailand

BKK

7

NO

Dakar, Senegal

DKR

0

NO

Barcelona, Spain

BCN

1

SE

Dublin, Ireland

DUB

0

SE

Beijing, China

BEJ

8

NO

Durban, South Africa

DUR

2

NO

Belgrade, Yugoslavia

BEG

1

SE

Frankfurt, Germany

FRA

1

SE

Berlin, Germany

BER

1

SE

Glasgow, Scotland

GLA

0

SE

Birmingham, England

BHX

0

SE

Guatemala City, Guatemala GUA

-6

NO

Bogotá, Colombia

BOG

-5

NO

Hamburg, Germany

HAM

1

SE

Bordeaux, France

BOD

1

SE

Havana, Cuba

HAV

-5

SH

Bremen, Germany

BRE

1

SE

Helsinki, Finland

HEL

2

SE

Brisbane, Australia

BNE

10

NO

Hong Kong, China

HKG

8

NO

Brussels, Belgium

BRU

1

SE

Irkutsk, Russia

IKT

8

SK

Bucharest, Romania

BBU

2

SE

Jakarta, Indonesia

JKT

7

NO

Budapest, Hungary

BUD

1

SE

Johannesburg, South Africa JNB

2

NO

Buenos Aires, Argentina BUA

-3

NO

Kingston, Jamaica

KIN

-5

NO

Kinshasa, Congo

FIH

1

NO

Oslo, Norway

OSL

1

SE

Kuala Lumpur, Malaysia KUL

8

NO

Panama City, Panama

PTY

-5

NO

La Paz, Bolivia

LPB

-4

NO

Paris, France

PAR

1

SE

Lima, Peru

LIM

-5

NO

Perth, Australia

PER

8

NO

Lisbon, Portugal

LIS

0

SE

Prague, Czech Republic

PRG

1

SE

Liverpool, England

LPL

0

SE

Rangoon, Myanmar

RGN

6.5

NO

London, England

LON

0

SE

Reykjavík, Iceland

RKV

0

NO

Lyon, France

LYO

1

SE

Rio de Janeiro, Brazil

RIO

-3

sb

Madrid, Spain

MAD

1

SE

Rome, Italy

ROM

1

SE

Manila, Philippines

MNL

8

NO

Salvador, Brazil

SSA

-3

NO

Marseille, France

MRS

1

SE

Santiago, Chile

SCL

-4

sc

Melbourne, Australia

MEL

10

SA

São Paulo, Brazil

SPL

-3

sb

Mexico City, Mexico

MEX

-6

SU

Shanghai, China

SHA

8

NO

DST (DAYLIGHT SAVINGS TIME) DEFINITIONS:

SA = Australian DST.
SB = South Brazilian DST. Changes annually.
SC = Chile DST
SE = Standard European DST.
SG = Egypt DST
SH = Havana, Cuba DST
SI = Iraq and Syria DST
SK = Irkutsk & Moscow DST
SM = Montevideo, Uruguay DST

SPECIFICATIONS

Radio Frequency: 433 MHz
RF Reception range: 100-328 feet (30 -100 m)

Barometric Pressure

Measuring Range: 14.75 inHg to 32.44 inHg (500 Hpa to 1100Hpa); (374.5 mmHg to 823.8 mmHg)
Resolution: 0.003 inHg (0.1 Hpa, 0.08 mmHg)
Accuracy: 0.015 inHg (5 Hpa; 0.38 mmHg)
Sampling interval: 20 minutes
Altitude Compensation Range: -657 ft to 16404 ft (-200m to +5000 m)

Temperature (Indoor)

Operating Range: 14.2° to 140°F (-9.9° to 60°C)
Resolution: 0.2°F (0.1°C)
Accuracy: 2°F (1°C)
Sampling Interval: 10 seconds

Humidity (Indoor)

Operating Range: 0% to 99%
Resolution: 1%
Accuracy: 5%
Sampling Interval: 10 seconds

Wind Direction

Range: 0° to 360°
Resolution: 22.5°
Accuracy: 11.25°
Starting Threshold: 3mph (4.8 Km/h)
Transmitting interval: 33 seconds

Rainfall

1h/24h/yesterday range: 0 to 78.73 inch 

(0 to 1999.9 mm)

Last week/ last month range: 0 to 787.3 inch 

(0 to 19999 mm)

Resolution: 0.03 inch (0.6578 mm)
Accuracy: +/- 5% +/- 0.03 inch 

(+/-5%mm +/-0.6875)

Transmitting Interval: 183 seconds

Battery life (alkaline)

Main unit: 2 month
Thermo-Hygrometer: over 12 months
Anemometer: 2 years
Rain Gauge: 2 years

Dimensions

Main unit: 7.31 (L) x 5.39 (H) x 1.26 (D) inches / 185.8 (L) x 136.9 (H) x 32 (D) mm
Remote Thermo - Hygrometer: 2.37 (L) x 4 (H) x 1 (D) inches / 60 (L) x 101 (H) x 25 (D) mm
Remote Anemometer: 19.16 (L) x 19.16 (H) x 15.35 (D) inches / 486.6 (L) x 486.6 (H) x 390 (D)mm
Remote Rain gauge: 6.49 (L) x 6.89 (H) x 4.72 (D) inches / 165 (L) x 175 (H) x 119 (D)mm

FCC STATEMENT

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) This device may not cause harmful interference, and (2) This device must accept any

interference received, including interference that may cause undesired operation.
Warning: Changes or modification to this unit not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

NOTE:

This equipment had been tested and found to comply with the limits for a Class B Digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection

against harmful interference in a residential installation. This equipment, installed and used in

accordance with the instructions, may cause harmful interference to radio communications.
There is no guarantee that interference will not occur in a particular installation. If this equipment does

cause harmful interference to radio or television reception, which can be determined by turning the

equipment off and on, the user is encouraged to improve or correct turning the interference by one or

more of the following measures:

 Reorient or relocate the receiving antenna

 Increase the separation between the equipment and receiver.

 Connect the equipment to an outlet on a circuit different from that to which the receiver is

connected.

 Consult the dealer or an experienced radio / TV technician for help.

8

SN = Namibia DST
SP = Paraguay DST
SQ = Iran DST maybe changed annually.
ST = Tasmania DST
SU = Standard American DST.
SZ = New Zealand DST
NO DST = no = Places that do not observe DST;
ON = Always add 1 hour to the local standard time

Temperature (remote)

Range: -40° to 176°F (-40° to 80°C)
Resolution: 0.2°F (0.1°C)
Accuracy: 2°F (1°C)
Transmitting Interval: around 47 seconds

Humidity (Outdoor)

Operating Range: 0% to 99%
Resolution: 1%
Accuracy: 5%
Sampling Interval: 10 seconds
Transmitting Interval: around 47 seconds

Wind Speed

Range: 0 to 199.9mph 

(199.9 Km/h, 173.7 Knots, 89.3 m/s)

Resolution: 0.1mph (0.16 Km/h)
Accuracy: (2mph + 5%)
Starting Threshold: 3mph (4.8 Km/h)
Wind/Gust Speed Display Update Interval: 

33 seconds

Wind/Gust Sampling Interval: 11 seconds

Power

Main unit: 4 x UM-3 or “AA” batteries; 

7.5V AC/DC power adaptor 

(200mA; center pin positive)

Remote Thermo Hygrometer: 

2 x UM-3 or “AA” batteries

Remote Anemometer: 2 x UM-3 or “AA” batteries
Remote Rain Gauge: 2 x UM-3 or “AA” batteries

Weight (without batteries)

Main unit: 8.15oz (231g)
Remote Thermo-Hygrometer: 2.29oz (65g)
Remote Anemometer: 11.12oz (315g)
Remote Rain gauge: 10.24oz (290g)

Summary of Contents for WMS831

Page 1: ...e mail info omega com For latest product manuals omegamanual info WMS831 Wireless Data Logging Weather Station Shop online at omega com User sGuide MADE IN CHINA...

Page 2: ...Managed by the United Kingdom Office Toll Free 0800 466 342 TEL 33 0 161 37 29 00 FAX 33 0 130 57 54 27 e mail sales omega fr Germany Austria Daimlerstrasse 26 D 75392 Deckenpfronn Germany Toll Free...

Page 3: ...her sensors and the main unit BEFORE permanently mounting them outside BEFORE YOU BEGIN We recommend using alkaline batteries for the remote weather sensors and the main unit when temperatures are abo...

Page 4: ...l counting electronics E BATTERY COMPARTMENT Holds 2 AA size batteries F SCREWS Secure battery compartment cover G BUILT IN LEVELER Allows leveling rain gauge on the surface H BUCKET SEE SAW MECHANISM...

Page 5: ...atically when adapter is connected Power 7 5 V AC DC adapter for automatic remote control 4 AA batteries BATTERY INSTALLATION Open the battery compartment door on the back of the main unit Insert 4 AA...

Page 6: ...e adjusted to high or low using the switch located on the back panel NOTE For an automatic control function the main unit must be plugged into the wall power outlet via the AC DC adaptor provided USIN...

Page 7: ...just the latitude Press and hold down either button for quick digits advance Press SET to confirm the selection Continue setting the longitude using the same steps Set the Time Zone by pressing UP or...

Page 8: ...ode press the MEMORY button to recall a current temperature and humidity minimum temperature and humidity or maximum temperature and humidity at the remote location RESETTING THE REMOTE TEMPERATURE AN...

Page 9: ...Then press and hold DOWN on the main unit or handheld remote to enforce a search for all remote signals If this does not work check the wireless transmission path from the corresponding weather senso...

Page 10: ...ampling Interval 10 seconds Wind Direction Range 0 to 360 Resolution 22 5 Accuracy 11 25 Starting Threshold 3mph 4 8 Km h Transmitting interval 33 seconds Rainfall 1h 24h yesterday range 0 to 78 73 in...

Page 11: ...ity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial...

Page 12: ...therwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold...

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