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Table of Contents
Related Manuals for DAVIS Weather Monitor II
Summary of Contents for DAVIS Weather Monitor II
- Page 1 ’ WNER ANUAL Product # 7440...
- Page 2 This product complies with the essential protection requirements of the EC EMC Directive 89/336/EC. © Davis Instruments Corp. 2000. All rights reserved. Weather Monitor II and WeatherLink are registered trademarks of Davis Instruments Corp. Macintosh is a registered trademark of Apple Computer, Inc. Windows is a trademark of Microsoft Corp.
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Page 3: Table Of Contents
Powering the Weather Monitor II ........ - Page 4 Questions? Call the Davis Service Center ........
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Page 5: Ntroduction
This instruction man- ual takes you step-by-step through the process of assembling, testing, and installing your Weather Monitor II so you can begin collecting data as soon as possible. The standard station comes with all the sensors necessary to monitor the essen- tial weather conditions described above. -
Page 6: Optional Accessories
Collector Heater allows you to measure freezing rain or the moisture content of snowfall. ® • WeatherLink Logs data gathered by the Weather Monitor II, downloads it to your PC or Macintosh weather data. • Car/Boat/RV Lighter Cord Uses the cigarette lighter in your car, RV, truck, or boat to power the Weather Monitor II. -
Page 7: Tools And Materials Needed For Installation
• Standard switch box if mounting the console with the wires running inside the wall (page 14) • Medium Phillips screwdriver if mounting the console on a wall (page 15) Weather Monitor II Tools and Materials Needed for Installation EEDED FOR... -
Page 8: A Typical Installation
NORTH SIDE OF BUILDING in Northern Hemisphere SOUTH SIDE OF BUILDING in Southern Hemisphere The diagram above shows a typical Weather Monitor II installation. The fol- lowing pages will give you specific instructions for installing your station. To avoid unnecessary problems, be sure to thoroughly test your system before installing it. -
Page 9: Ssembling The Tation
New alkaline batteries will power the Weather Monitor II for 24 - 48 hours. For maximum security, keep the battery backup fresh. You should replace batteries any time the unit has operated on battery power for more than 18 hours. To prevent loss of data when replacing batteries, make sure the unit is receiving power from the adapter before changing batteries. -
Page 10: Connecting The Console And Junction Box
4-40 x 1 1/8- inch pan head screw, #4 flat washer, #4 lock washer, and 4-40 hex nut. Page 6 Battery Cover Release ONSOLE AND UNCTION NEMOMETER Standard 9-Volt Alkaline Battery Weather Monitor II... - Page 11 2. Place a drip ring on a flat surface with the small hole facing up. Securely press the wind vane on top of the drip ring. Tilt the vane slightly. Ensure the ring fits securely between the two ridges on the vane Weather Monitor II 4-40 Hex Nut #4 Lock Washer #4 Flat Washer 4-40 x 1"...
- Page 12 4. Spin the wind cups. If they do not spin freely, loosen the set screw and lower the cups slightly. Repeat until the wind cups spin freely. Page 8 ECURING ING ON ONTROL Push cups onto stainless steel shaft Tighten set screw with allen wrench Weather Monitor II...
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Page 13: Esting The Tation
A temperature reading and the words INSIDE and TEMPERATURE should appear on the display. 3. Press TEMP again. A temperature reading and the words OUTSIDE and TEMPERATURE should appear on the display. Weather Monitor II T A T I O N EMPERATURE ENSOR Testing the Anemometer... -
Page 14: Installing The Station
3. Use an electric drill with a 3/16 inch (4.8-mm) drill bit to make pilot holes in these locations. 4. Drive the four lag screws through the holes in the ane- mometer base and into the wood. Page 10 T A T I O N NEMOMETER URFACE Weather Monitor II... - Page 15 6. Being careful to keep the stainless steel shaft from turning, place the wind vane on the shaft with the bullet-shaped nose of the vane point- ing in the same direction as the arm. Weather Monitor II ETAL OUTSIDE DIAMETER OUTSIDE DIAMETER GREATER THAN...
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Page 16: Installing The External Temperature Sensor
To shield the sensor from the sun, place it on the north side in the North- ern Hemisphere, south side in the Southern Hemisphere. Page 12 Push the wind vane onto the stainless steel shaft XTERNAL EMPERATURE Tighten set screw with allen wrench Cable Tie Cable Clip ENSOR Weather Monitor II... -
Page 17: Mounting The Junction Box
The junction box may be installed either indoors or outdoors. The junction box is not resistant to moisture, dirt, or other outdoor stresses so, if you plan to install the junction box outdoors, use a weather-proof shelter such as the Davis Multi-Purpose Shelter or Complete System Shelter. If indoors, place the junc- tion box well above the floor so moisture from mopping, impact from vacuum... -
Page 18: Displaying The Console
The console’s temperature read- ings are necessarily less accurate because of the trapped air within the shelter. The console’s humidity sensor is subject to failure in severe cli- mates, even within the shelter. Page 14 ONSOLE Weather Monitor II... - Page 19 5. Slide the keyholes on the back of the mounting base over the two screw heads. Lock the console into place by gently sliding it downward until it no longer moves. Weather Monitor II Displaying the Console Page 15...
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Page 20: Using The Weather Functions
24-hour format, the digits representing the hour cycle from 0 to 23 as you hold down ENTER. Page 16 E A T H E R BAROMETRIC ISPLAY U N C T I O N S TREND Weather Monitor II... -
Page 21: Highs And Lows
The number you just entered should appear in the display as the current time. IGHS AND The Weather Monitor II records highs and lows for many of its functions. Highs and lows are maintained until you manually clear the entries, or until power is interrupted. -
Page 22: Time And Date
Low Wind Chill: -19˚C IME AND The Weather Monitor II can display time in either a 12-hour or a 24-hour for- mat. In the 12-hour format, either an AM or a PM is displayed with the time. In the 24-hour format, the symbol 24HR is displayed with the time. In either case the hour is on the left, separated from the minutes by a colon. -
Page 23: Temperature
(or optional External Temperature/ Humidity Sensor). Both readings may be displayed in either ˚F or ˚C in incre- ments of either 1˚ or 0.1˚. The Weather Monitor II also records high and low temperatures for each set of temperature readings. Weather Monitor II... - Page 24 2. Press RECL once or twice to select the high or low temperature, as desired. Page 20 OUTSIDE TEMPERATURE BAROMETRIC TREND NSIDE AND UTSIDE EMPERATURE TEMPERATURE BAROMETRIC TREND IGH AND EMPERATURE INSIDE TEMPERATURE BAROMETRIC TREND Inside Temperature: 24˚C ISPLAYS OUTSIDE TEMPERATURE BAROMETRIC TREND Low Outside Temperature: 44˚F ISPLAYS Weather Monitor II...
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Page 25: Wind Speed And Wind Direction
“Alarms” on page 30. PEED AND The Weather Monitor II shows wind speed and wind direction in two places on the display. They are always shown on the compass rose on the left hand side of the display and can be selected to show on the right hand side. - Page 26 The display will flash several times, and then the high wind speed will be replaced by the current wind speed. As higher wind speeds occur, the high will be updated. Page 22 BAROMETRIC TREND IRECTION AND PEED BAROMETRIC SPEED TREND Wind Speed: 15 mph ISPLAYS Weather Monitor II...
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Page 27: Wind Chill
Wind chill is expressed as a tem- perature reading, which can be displayed in either ˚F or ˚C in increments of 1˚. The Weather Monitor II also records the lowest wind chill reading at your loca- tion. -
Page 28: Rainfall
For instructions on how to use the low wind chill alarm, see “Alarms” on page 30. AINFALL Before you can use the rainfall function on your Weather Monitor II, you must first set up and install the optional Rain Collector. See the booklet included with the Rain Collector for instructions on its use. - Page 29 Barometric Pressure settings drifts over time so, every 4-6 months, check your barometer setting to ensure it is correct. To Display the Current Barometric Pressure Press BAR. The barometric pressure and the word BAROMETER appear on the display. Weather Monitor II BAROMETER BAROMETRIC AROMETRIC RESSURE...
- Page 30 Note: Each time you enter a new stored barometric pressure you clear the previous one. There is no way to clear a stored barometric pressure without entering a new one. Page 26 BAROMETRIC TREND RESSURE IN ILLIMETERS AND BAROMETER BAROMETRIC TORED AROMETRIC RESSURE BAROMETER BAROMETRIC TREND Barometer: 1011.5 mb ILLIBARS STORED TREND Weather Monitor II...
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Page 31: Humidity
One reading comes from the sensor located inside the console. The other reading comes from the optional External Temperature/Humidity Sensor. If you do not have this sensor, the Weather Monitor II will not measure outside humidity and all outside humidity display readings will appear as a series of dashes. - Page 32 To Use the High and Low Humidity Alarms For instructions on how to use the high and low humidity alarms, see “Alarms” on page 30. Page 28 OUTSIDE HUMIDITY BAROMETRIC TREND UMIDITY ISPLAYS HUMIDITY INSIDE BAROMETRIC TREND Inside Humidity: 26% Weather Monitor II...
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Page 33: Dew Point
Dew point can be dis- played in either ˚F or ˚C, in increments of 1˚. The Weather Monitor II also records high and low dew points, and has a spe- cial dew point alarm to alert you when temperature comes within 2˚F (1˚C) of dew point. -
Page 34: Using The Console Functions
S I N G T H E LARMS The Weather Monitor II features a set of alarms which can be programmed to sound whenever a reading passes a particular point. Check the chart below to determine which functions have alarms and what kind of alarms they have. All alarms (except barometric pressure, dew point, and time) behave in basically the same way. - Page 35 If more than one alarm is sounding at once, the Weather Monitor II will scan through all of the triggered alarms, displaying each for approximately four sec- onds before moving to the next. HIGH ALARM SPEED High Wind Speed Alarm: 30 mph ALARM Low Outside Temp Alarm: 32.0˚F...
- Page 36 The word ALARM and the function triggering the alarm remains on the display until alarm conditions are no longer met or the alarm is cleared. Page 32 OUTSIDE TEMPERATURE ALARM BAROMETRIC UTSIDE EMPERATURE LARM ALARM BAROMETER BAROMETRIC AROMETRIC REND LARM TREND XAMPLE TREND Weather Monitor II...
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Page 37: Total Clear
• Low Wind Chill The following functions are not reset by total clear: • Time • Date • Current Barometric Pressure • Daily and Accumulated Rainfall • Barometric Trend • Alarm Settings Weather Monitor II OUTSIDE ALARM BAROMETRIC LEARING AN LARM HUMIDITY TREND... -
Page 38: Auto Scan
The unit will beep and the display will flash seven times and then stop. When this happens, the functions listed above have been cleared. The Weather Monitor II can be set to perform an automatic scan of the weather functions. Each reading appears on the display (in the unit of measure you last used) for approximately four seconds before being replaced by the next func- tion in the scan routine. -
Page 39: Display Lamp
ISPLAY The Weather Monitor II contains a lamp so you can read the display in the dark. To turn the lamp on or off, simply press any two keys at once. Note: Leaving the display lamp on for a prolonged period may cause the inside temperature reading to rise by 2-4˚F. -
Page 40: Calibration Numbers
NSIDE AND UTSIDE Change CAL if you wish to adjust the Weather Monitor II so that is reads the same as another thermometer. Note that there are individual CAL numbers for both inside and outside temperature. If you change CAL for outside tempera- ture, the wind chill reading will also be affected. -
Page 41: Rainfall
Note: If you do not begin entering numbers within the first second after you select a digit, the display will exit calibration mode and return to its normal display. Weather Monitor II (1 / CAL) AINFALL... -
Page 42: Resetting Calibration Numbers To Default
4. Reattach the power adapter and insert the battery. The unit will start up again and all CAL numbers will be reset to their default values. 5. Reenter the current barometric pressure, accumulated rainfall, and all alarm settings. Page 38 UMBERS TO EFAULT Weather Monitor II... -
Page 43: Roubleshooting Uide
R O U B L E S H O O T I N G While the Weather Monitor II is designed to provide years of trouble-free oper- ation, occasional problems may arise. If you are having a problem with your unit, please check the following guide before sending the unit in for repair. -
Page 44: Temperature Tips
• Once you receive the final beep, install a fresh backup battery, if desired, and put it back into service. • Davis recommends plugging the console’s power adapter into a computer- grade surge protector to help avoid this problem. EMPERATURE Outside temperature seems too high •... -
Page 45: Humidity Tips
• If these steps do not reveal the problem, the problem is probably with the anemometer. Call the factory for return authorization. HILL Wind chill reading seems too high or too low • Check calibration number for temperature and wind speed. Adjust if neces- sary. Weather Monitor II Humidity Tips Page 41... -
Page 46: Warranty And Repairs
Warranty and Repairs 9 . W A R R A N T Y A N D IMITED For details on Davis’ warranty policy, please refer to the Maintenance, Service, and Repair Information brochure included with your station. UESTIONS ALL THE If you have any questions about our products, please call our Service Center at 1-510-732-7814. -
Page 47: Specifications
Outside Humidity Range: 0 to 100% RH Accuracy: ± 3% (1 to 90% RH), Time ± Accuracy: 15 sec/month Weather Monitor II 5%, whichever is greater 5%, whichever is greater ± 1.7 hPa ± 4% (90 to 100% RH) Specifications... - Page 48 3465 Diablo Avenue, Hayward, CA 94545-2778 510-732-9229 • Fax: 510-732-9188 E-mail: info@davisnet.com • www.davisnet.com...
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