Frequently Asked Questions

Your weather station may only display some of the following increments of rain. Please refer to your User Manual for details. Here are how increments of rain are defined:

• Rain Rate is defined as the rainfall in the last 10 minutes, multiplied by 6  (10 minutes x 6 = 1 hour). This is also referred to as instantaneous rain per hour.
• Hourly Rain is defined as the rainfall in the last hour.
• Rain event is defined as continuous rain, and resets to zero if accumulated rainfall is less than 1 mm (0.039 in) in a 24 hour period.  Some weather stations may calculate this slightly differently and the customer should reference the User Manual.
• Daily Rain is defined as the rainfall since midnight (00:00).
• 24 Hour Rain is defined as the rainfall in the last 24 hours. For example, if it is currently 5:00 pm, 24 hour rain would be the amount of rain that has fallen since 5:00 pm yesterday.
• Weekly Rain is defined as the calendar week total, and resets on Sunday morning at midnight (Sunday thru Saturday).
• Monthly Rain is defined as the calendar month total, and resets on the first day of the Month.
• Yearly Rain is defined as the calendar year total, and resets on the first day of the Year. The WS-1000 series weather stations allow you to change the month rain is reset to 0.00 (referred to as Rainfall Season).
• Total Rain is defined as the running total since station was powered up.

Most weather stations use self-emptying rain gauges, which do not count snow and will not operate when frozen.

It requires the snow melt before the precipitation is “counted”.

Snow build up is difficult to prevent, especially “wet snow”. You can spray the top of the unit with teflon snow and ice repellent like this:

https://www.amazon.com/DuPont-Teflon-Snow-Repellant-10-Ounce/dp/B0031T82NO

but this is not 100% effective.

Snow is considered normal maintenance, and accumulated snow can be brushed off gently with a broom.

Rainfall spikes, or over reporting is generally caused by pole vibration.

Pole vibration can occur when it is very windy, or a bird lands on the weather station.

Hail can also cause the rain gauge mechanism to vibrate.

Make certain the pole is not vibrating during windy conditions, causing false readings.

If you were working on the weather station, the vibration may also result in rainfall spikes.

Debris and snow melt can also cause a delayed reporting of rain.

Temperature can read too low (or inaccurate) at night when placed close to a radiant heat source, like a house, building or structure.  It can also read lower then other stations in your area due to irrigation or sprinklers.

1. Place the sensor inside next to the indoor console sensor. Wait about 1 hour for stabilization. The sensors should agree within the accuracy specifications. Most RTD (resistive thermal device) sensors are accurate within +/- 2 degF. Thus, the sensors should agree within 4 degF.
2. Mercury or red spirit thermometers are very accurate. Inside your house, place a red spirit thermometer next to the digital thermometer. The thermometers should agree within 2 degF.
3. For colder temperature verification, place the sensor with the red spirit thermometer in the regrigerator or freezer.
4. If the sensor is separate, place the sensor in a shaded area on the north side of the structure to avoid direct and radiant heat.
5. Temperature sensors that do not have radiation shields will absorb solar energy and read higher than the ambient temperature. To prevent this problem, purchase a solar radiation shield from Ambient Weather.
6. We have a one year warranty and a 30 day return policy. For details, please visit: www.AmbientWeather.com/rma.html
7. While at the website, enter the part number of the transmitter in the Search by Keyword to locate the product.

To calibrate the wind direction, select the Calibration Panel from your display by tapping the Tool Icon four times:

Enter the correct current Wind Direction into the Display Console:

If you live in the Southern Hemisphere, point the solar panel to the North and calibrate the wind direction with a 180 degrees offset.

An ultraviolet sensor (UV sensor) is a device that measures UV light from the Sun.

The UV index is an international standard measurement of how strong the ultraviolet (UV) radiation from the sun is at a particular place on a particular day. It is a scale primarily used in daily forecasts aimed at the general public.

Its purpose is to help people to effectively protect themselves from UV light, of which excessive exposure causes sunburns, eye damage such as cataracts, skin aging, and skin cancer (see the section health effects of ultraviolet light).

• Wear sunglasses on bright days.
• If you burn easily, cover up and use broad spectrum SPF 30+ sunscreen.
• Watch out for bright surfaces, like sand, water and snow, which reflect UV and increase exposure.

A UV Index reading of 3 to 5 means moderate risk of harm from unprotected sun exposure.

• Stay in shade near midday when the sun is strongest.
• If outdoors, wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.
• Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating.
• Watch out for bright surfaces, like sand, water and snow, which reflect UV and increase exposure.

A UV Index reading of 6 to 7 means high risk of harm from unprotected sun exposure. Protection against skin and eye damage is needed.

• Reduce time in the sun between 10 a.m. and 4 p.m.
• If outdoors, seek shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.
• Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating.
• Watch out for bright surfaces, like sand, water and snow, which reflect UV and increase exposure.

A UV Index reading of 8 to 10 means very high risk of harm from unprotected sun exposure. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly.

• Minimize sun exposure between 10 a.m. and 4 p.m.
• If outdoors, seek shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.
• Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating.
• Watch out for bright surfaces, like sand, water and snow, which reflect UV and increase exposure.

A UV Index reading of 11 or more means extreme risk of harm from unprotected sun exposure. Take all precautions because unprotected skin and eyes can burn in minutes.

• Try to avoid sun exposure between 10 a.m. and 4 p.m.
• If outdoors, seek shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.
• Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating.
• Watch out for bright surfaces, like sand, water and snow, which reflect UV and increase exposure.

The saturated salt solution test is an easy method for testing the accuracy of your humidity sensor. Most electronic sensors are accurate from +/- 3 to 5% humidity, and some weather stations or weather centers can be calibrated from the display console by applying a bias.

1. Mix common table salt with tap water until you have a completely saturated solution with no standing water.
2. Place about 1 inch of the saturated salt solution in an open container or bowl that is approximately 4 inches high. The 3 inches above the solution will contain air with a predictable humidity value. You can use a cut away container as shown in the figure below. One edge of the container is cut slightly lower to rest the sensor on the lip.
3. Place this container and the sensors in a waterproof zip lock plastic bag, as shown in the figure below. Leave one of the corners open and remove all of the remaining air with a straw. Close the air tight bag.
4. Leave the sensor in the bag for four days or 96 hours to completely stabilize.
5. The sensor should read 75% plus or minus the sensors rated margin of error. For example, if the sensor is rated at +/- 5%, the display should read between 70 and 80% relative humidity.
6. If the sensor is adjustable or calibrateable, set the humidity on the display to 75%.
7. Repeat this procedure once per year to account for electronic drift (sensor contamination).

   
   The images above show a table salt slurry of 1″ height mixed in a container about 3″ tall. This solution is then placed in a plastic bag with the sensor.

To determine the accuracy of a digital rain gauge, you need to know the surface area of the funnel.

If the rain gauge has a rectangular inlet:

Area = length x width

If the rain gauge is circular:

Area = ( π x d² ) / 4, where d is the diameter of the rain gauge and π = 3.14159

The calculation is as follows:

Total Rain = Water Volume / Area

Example 1:

Rectangular Rain Gauge:

Area = 11 x 5 cm or 55 cm²

If you pour in 100 ml of water (or 100 cm³) SLOWLY (over a 10 minute period), one would expect the rainfall to equal:

Total Rain = 100 cm³/ 55cm² = 1.81 cm or 18 mm of rain (+/- the accuracy specification of the rain gauge).

Since 1 mm = 0.03937 inches, the total rain (inches) = 18 x 0.03937 inches/mm = 0.71 inches.

Take into account the resolution of the rain gauge.

If the resolution is 0.04 inches for example, the measurement would be 0.04 inches/tip x 17 tips = 0.68 inches.

Example 2:

Circular Rain Gauge (Osprey):

Diameter = 11.28 cm

Area = ( π x 11.28² ) / 4 = 100 cm²

If you pour in 100 ml of water (or 100 cm³) SLOWLY (over a 10 minute period), one would expect the rainfall to equal:

Total Rain = 100 cm³/ 100cm² = 1 cm or 10 mm of rain (+/- the accuracy specification of the rain gauge).

Since 10 mm = 0.3937 inches, the total rain (inches) = 0.3937 inches.

Take into account the resolution of the rain gauge.

If the resolution is 0.01 inches for example, the measurement would be 0.01 inches/tip x 39 tips = 0.39 inches.

Important Note: Make sure the weather station display is set to total rain and not rain rate.

Your relative pressure likely does not match the official source because you have not calibrated it properly. You will need to reference your User Manual for correcting relative pressure.

You can locate an official source for your area to cailbrate by visiting https://ambientweather.net/baro

Discussion:

To compare pressure conditions from one location to another, meteorologists correct pressure to sea-level conditions. Because the air pressure decreases as you rise in altitude, the sea-level corrected pressure (the pressure your location would be at if located at sea-level) is generally higher than your measured pressure.

Thus, your pressure may read 28.62 inHg (969 mb) at an altitude of 1000 feet (305 m), but the corrected pressure is 30.00 inHg (1016 mb).

The standard sea-level pressure is 29.92 in Hg (1013 mb). Pressure conditions greater than 29.92 inHg (1013 mb) are considered high pressure and less than are considered low pressure.

Most weather stations instruct you to find a reporting station near your location to identify the corrected pressure.

1. Place the sensor inside next to the indoor console sensor. Wait about 24 hours for stabilization. The sensors should agree within the accuracy specifications. Most digital capacitive hygrometer sensors are accurate within +/- 5%. Thus, the sensors should agree within 10% when considering full tolerance stack up.Note that humidity accuracy, like most other measurement parameters, are a percentage of full scale, and not a percentage of point.
2. Sling psychrometers are very accurate. Perform a formal calibration. The humidity should agree within 5% of the  rating. You can also make your own calibration kit. For details, visit:

Testing The Accuracy Of A Hygrometer - Saturated Salt Test?

3.   Place the sensor in a shaded area on the north side of the structure to avoid direct and radiant heat.

4.  Humidity is significantly impacted by external factors like location and water (grass, lakes, rivers, etc). Insure proper installation. You cannot use a source like the National Weather Service. There are several reasons:

• The NWS may update once per hour.
• The NWS has strict installation guidelines (no unnatural structures, bodies of water, or unnatural vegetation nearby).

5.  If the problem persists, we have a one year warranty. Visit: www.AmbientWeather.com/rma.html

In general, when following the regular maintenance schedule in the user manual a user can expect a 3 to 10 year life before fully replacing the sensor array. A weather station’s life expectancy is greatly impacted by it’s environment see examples below:

1. Coastal, Marsh or Wetland environments. Salt air, salt spray and acidification are the most difficult environments for weather stations to have a long life. The salt air, salt spray and acidification corrode bearings, sensor boards (temperature, humidity, etc.), mounting hardware and other moving parts. Expect a 1-3 year product life span in this type of environment. Ambient Weather's sensors boards are all conformal coated to prevent this corrosion. The nature of digital thermometer and hygrometer sensors relying on electrical resistance of metal changes allows the corrosion to occur more quickly
2. Long term high humidity environments. Prolonged exposure to high levels of humidity, whether salt, acidic or not, predisposes metal parts to fail prematurely. In a hot and dry environment weather stations are known to last 7-10 years.
3. Hurricanes and tropical storms can also reduce the life of a weather station.

Ambient Weather’s weather stations carry a one year warranty.

None of the Ambient Weather Stations support repeaters or boosters at this point in time.

To check your current version of firmware, go to the Factory About| Display from your Display Console (press the tool icon on the display four times, or ):

The firmware in this example is 2.3.1.

The update procedure is as follows:

1. Download the latest zip file (below) to your your computer. Make a note of where you saved this file.

https://www.ambientweather.com/amwewswsdo.html

2. Extract the zip file.
3. Copy the extracted folder Update EasyWeather to your MicroSD Card (the SD card must be empty).
4. Power down your display console by removing AC power.
5. Insert the SD Card into the display console.
6. Power up the display console.
7. The console will verify the firmware was updated.

If this process does not work, it usually means the Update EasyWeather is not in the root directory of your MicroSD Card.

Your SD card root directory will look as follows:

1. If the rain is under reporting, loss of reception may result in uncounted rain with older firmware. You can update to the latest firmware here:
   https://www.ambientweather.com/amwewswsdo.html
2. For WS-1000, WS-1001, WS-1002, WS-1200, WS-1201 owners: Your display may be showing rain rate (in/hr) and it has not rained in the last ten minutes. Change the console rain increment from 1h (one hour) to daily, weekly, monthly or total rain. Do these increments of rain also read 0.00? If so, and it has recently rained, reference the next step.Note that instantaneous rain rate = rain in the last 10 minutes x 6.
3. Make sure the rain gain is set to 1.0 on the calibration screen.Setting the rain gain to 0.1 for example will under report rain by a factor of 10 and would require 0.1” of rain to report 0.01”.
4. The tipping mechanism may be stuck because of debris.  Pour water slowly through the rain bucket and listen for clicking of the rain gauge mechanism. Each click represents 0.01 in of rain. See if this rain is accurately recorded on the console.
5. The tipping mechanism has not been recently cleaned and bugs have nested inside the rain gauge or debris has collected in the funnel.Clean the rain gauge funnel per the User Manual.Clean the interior of the rain gauge until free from bugs and debris. Spray with bug spray to prevent future nesting.To clean the interior of the rain gauge, reference the Advanced Troubleshooting guide in the manual. Important Note: Do not stress the wires when opening the sensor array.
   
6. The rain gauge is beyond repair.If under one year warranty, visit:
   www.ambientweather.com/rma.html
7. If out of warranty, replace the sensor array here:
   https://www.ambientweather.com/amws1002array.html

If the temperature does not change, or is stuck at a specific value:

1.  Cover the solar collector with your hand.  Press and hold the reset button on the sensor array (#6) for about 10 seconds:
2. Replace the batteries. We recommend Lithium Energizer Ultimate Batteries. Please read the following:

   My Rechargeable Batteries No Longer Work. Which Batteries Are Recommended For My Weather Station?

3.  If the problem persists, the sensor array needs replacing.

We have a one year warranty. For details, please visit:

www.AmbientWeather.com/rma.html

For out of warranty replacement, please visit:

https://www.ambientweather.com/amws1002array.html

The 1st generation weather stations listed below use a alkaline rechargeable battery as the energy storage, and solar collector recharged the batteries.

WS-1200

WS-1200-IP

WS-1400-IP

WS-1001-WiFi

The second generation weather stations below add a super capacitor as the primary energy storage device.

The super capacitor is charged by the solar collector in the day, and non-rechargeable batteries at night.

This is a more efficient and reliable design.

We recommend Lithium Energizer Ultimate batteries, because of their wide temperature range:

Why Are Lithium Ultimate Batteries Recommended And Not Alkaline Or Rechargeable Batteries?

WS-1201

WS-1201-IP

WS-1401-IP

WS-1002-WiFi

The second generation sensor array is compatible with the first generation sensor array.

Temperature errors can occur when a sensor is placed too close to a heat source (such as a building structure, the ground or trees).

To calibrate temperature, we recommend a mercury or red spirit (fluid) thermometer. Here is an example:

https://www.amazon.com/dp/B00551N8Q2

Bi-metal (dial) and digital thermometers (from other weather stations) are not a good source and have their own margin of error. Using a local weather station in your area is a poor source, due to changes in location, timing (airport weather stations are only updated once per hour) and possible calibration errors (many official weather stations are not properly installed and calibrated).

1. Place the sensor in a shaded, controlled environment next to the red spirit thermometer, and allow the sensor to stabilize for 3 hours. We recommend bringing both sensors inside.  Compare this temperature to the red spirit thermometer and adjust the console to match the fluid thermometer.
2. Adjust the temperature from the console to match the red spirit thermometer. Press the Settings button three times to display the calibration panel:
   
3. Press the down button until the temperature field is highlighted, and press plus  or minus  to adjust. Press the left  or right  button to change each multiple value.
4. Press the return button  to return to the main screen.

To connect your console to WiFi, select the Tool Icon  to go to the Setup Screen.

Select the down arrow button  19 times and highlight Wi-Fi Scan Setup. Select  .

Scroll down to highlight the WiFi network you wish to connect to and select the enter  button to enter the password.

Press   to scroll to the character and press enter  to select the character. Press OK when complete.

Press return  to return to the WiFi Network setup page. Leave the password blank of the WiFi network is not encrypted.
Note: The WiFi signal strength icon  is displayed on the home page .

If wireless connectivity is successful and you are reporting to AmbientWeather.net or Wunderground.com, the WiFi icon will be displayed under the wind chill display on the home page.

The reset button on the sensor array is on the bottom, next to the mounting bracket (#6, below):

If your screen does not power up, or the console is blank, press any of the keys on the display. If it does not display:

The issue may be with the AC adapter. Measure the output voltage of the AC adapter, and it should be about 5 Volts.

If the AC adapter is not registering a voltage, we have a one year warranty here: www.AmbientWeather.com/rma.html

If out of warranty. the AC adapter is available here for purchase:  https://www.ambientweather.com/amws1000acadapter.html

If the voltage is fine, the console needs replacing, we have a one year warranty here: www.AmbientWeather.com/rma.html

If out of warranty, the console is available here for purchase:

WS-1000-WiFi, WS-1001-WiFi, WS-1002-WiFi: https://www.ambientweather.com/amws1001wificonsole.html

WS-1200, WS-1201, WS-1200-IP, WS-1201-IP: https://www.ambientweather.com/amws1200console.html

In order for your sunrise and sunset to be correct, your date, time zone, longitude and latitude must be entered correctly.

To find your longitude and latitude, enter your address into Bing Maps:

https://www.bing.com/maps

1. To view your longitude and latitude, select the Tools icon  to enter the Setup screen. Press the down arrow button  until Longitude_Latitude Setup is selected, and press Plus  to view the settings. Make sure your longitude, latitude and hemisphere settings (north vs south, east vs west) are correct.Note that if your longitude is negative, choose the western hemisphere. If your latitude is negative, choose the southern hemisphere.

2. To view your time zone settings, select the select the Tools icon  to enter the Setup screen.  Press the down arrow button  until Date and Time Setup is selected,  and press Plus  to view the settings. Make sure your time zone is set correctly.

The most common issues are:

1. Longitude and latitude are reversed.
2. The hemisphere is selected incorrectly.
3. The time zone is set incorrectly.

1. Replace the batteries. We recommend the following batteries:
   My Rechargeable Batteries No Longer Work. Which Batteries Are Recommended For My Weather Station?
2. Clean any corrosion around and on the battery terminals.
3. If the problem persists, the sensor array must be replaced. We have a one year warranty. To replace under warranty, please visit: www.AmbienetWeather.com/rma.html
   
4. If out of warranty, a replacement array can be purchased here: https://www.ambientweather.com/amws1002array.html

The sensor array LED normally flashes once per 16 seconds. If the LED is flashing rapidly, there is an issue with the sensor array.

1. Replace the batteries. We recommend Energizer Ultimate Lithium.
2. Clean the terminals of any corrosion.
3. If the problem persists, the sensor array must be replaced. We have a one year warranty. To replace under warranty, please visit: www.AmbienetWeather.com/rma.html
4. If out of warranty, a replacement array can be purchased here:  https://www.ambientweather.com/amws1002array.html

If the sensor array drains batteries quickly after the batteries are replaced:

1. Remove the batteries and replace with non-rechargeable Energizer Lithium batteries. We have a discussion here:

My Rechargeable Batteries No Longer Work. Which Batteries Are Recommended For My Weather Station?

2.  Clean any corrosion around and on the battery terminals.

3. If the problem persists, the sensor array must be replaced. We have a one year warranty. To replace under warranty, please visit: www.AmbientWeather.com/rma.html

4. If out of warranty, a replacement array can be purchased here: https://www.ambientweather.com/amws1002array.html

Since the wind cups are integrated into the sensor array, the entire sensor array must be replaced:

https://www.ambientweather.com/amws1002array.html

Yes, the WS-1002 sensor array is compatible with the WS-1000, WS-1001, WS-1200 consoles.

If the indoor thermo-hygrometer-barometer (WH25B) stops reporting:

1. Replace the batteries in the sensor.
2. The sensor has an LCD display. Make sure the display is updating properly.
3. Place the sensor about 10 feet from the console or receiver, and power down and up the console or receiver.
4. If the problem persists, we have a one year warranty. Please visit: www.ambientweather.com/rma.html
5. For out of warranty replacement, visit: https://www.ambientweather.com/amws1000bth.html

The wind cups are integral to the weather station and cannot be replaced. The sensor array, which includes the wind cups, can be replaced here:

https://www.ambientweather.com/amws1002array.html

The specification sheet for the Solar Radiation sensor is here:

https://p10.secure.hostingprod.com/@site.ambientweatherstore.com/ssl/sensors/TEPT5700.pdf

The specification for the UV sensor is here:

https://p10.secure.hostingprod.com/@site.ambientweatherstore.com/ssl/sensors/Si1132.pdf

To inert the SD card into the console, the slot is on the right side of the console when viewing the display (#1, below):

1. The gold pins should be facing towards you.
2. The micro SD card slot is spring loaded. Push until the SD Card is flush with the console casing.
3. The micro SD Card will be locked in place.
4. To remove, push on the micro SD card, and the console card slot will unlock the SD Card.

1. Replace the batteries.We recommend Energizer Lithium Ultimate batteries like the following:https://www.amazon.com/Energizer-Ultimate-Lithium-Batteries-Each/dp/B00003IEMEhave a wide temperature operating range. They operate between -40 degF and 140 degF. Alkaline batteries only operate to about +10 degF. Rechargeable batteries often have a limited life and mean constant replacing, as well as a narrow temperature range.
2. If the problem persists, the sensor array needs replacing. We have a one year warranty.Please visit: www.AmbientWeather.com/rma.htmlIf out of warranty, the sensor array can be replacedhttps://www.ambientweather.com/amws1002array.html

1. Remove the batteries and replace with non-rechargeable Energizer Lithium batteries. We have a discussion here:My Rechargeable Batteries No Longer Work. Which Batteries Are Recommended For My Weather Station?
   
2. Clean any corrosion around and on the battery terminals.
3. If the problem persists, the sensor array must be replaced. We have a one year warranty. To replace under warranty, please visit: www.AmbienetWeather.com/rma.html
   
4. If out of warranty, a replacement array can be purchased here: https://www.ambientweather.com/amws1002array.html

1. Remove the batteries and replace with non-rechargeable Energizer Lithium batteries. We have a discussion here:My Rechargeable Batteries No Longer Work. Which Batteries Are Recommended For My Weather Station?
   
2. Clean any corrosion around and on the battery terminals.
3. If the problem persists, the sensor array must be replaced. We have a one year warranty. To replace under warranty, please visit: www.AmbienetWeather.com/rma.html
   
4. If out of warranty, a replacement array can be purchased here: https://www.ambientweather.com/amws1002array.html

No, sorry, the wind cup bearings cannot be cleaned or disassembled.  You can try compressed air to remove any debris, but the sensor array likely needs replacing.

We have a one year warranty here: www.AmbientWeather.com/rma.html

Otherwise, the sensor array can be replaced here: https://www.ambientweather.com/amws1002array.html

If the humidity reads 1% (humidity sensor is closed circuit), 99% (humidity sensor is open circuit) or dashes all of the time, the sensor array needs replacing.

We have a one year warranty. Please visit: www.AmbientWeather.com/rma.html

If out of warranty, the sensor array can be replaced here:

https://www.ambientweather.com/amws1002array.html

1. Make sure your console back light settings are correct.
2. From your display console, press the SET button and then the DOWN arrow button 10 times to highlight Backlight Setup.

   Press the PLUS button  to enter the backlight setup screen.

   

3. Make sure the automatic control backlight is appropriately checked and the times are correct. For example, Turn on the backlight is normally in the morning and turn off backlight is normally in the evening.

If the wind cups have resistance and come to an abrupt stop after rotation, the sensor array must be replaced.

We have a one year warranty. For warranty replacement, please visit: www.AmbientWeather.com/rma.html

For out of warranty replacement, please visit: https://www.ambientweather.com/amws1002array.html

The wind speed resolution for the Observer Series weather stations is about 2.5 mph, so the gust will appear in increments of about 2.5 mph.

The wind gust is defined as the peak wind speed calculated by the sensor array in the 14 second update period, sampled once per second, or 14 samples.

The wind speed is defined as the average wind speed calculated by the sensor array in the 14 second update period, sampled once per second, or 14 samples.

Thus, the gust will have a resolution of about 2.5 mph and the speed will have a resolution of 0.1, since it is an average.

The sticker is there to cover a borescope or inspection hole, so the sensor array body can be inspected.  We recommend you do not remove the sticker. It is not a drain hole.

The rain drain vents are shown below:

If the UV sensor spikes to 15, the sensor array must be replaced.

If under one year warranty, visit:

www.ambientweather.com/rma.html

If out of warranty, replace the sensor array here:

https://www.ambientweather.com/amws1002array.html

The screw size for the Observer Weather Station is:

PM (machine type) 3.0 x 15 mm  stainless steel

The indoor thermometer-barometer-hygrometer units of measure cannot be changed.

The sensor was designed for use within the USA. However, the console and both websites, AmbientWeather.net and Wunderground.com support both metric and imperial units of measure.

The North South East West Markers are located at the base of the shaft of the wind vane.

They are raised in the plastic and are not colored,  so they may be hard to see, but if you still cannot locate them, the solar panel points South.