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1. ambient weather Ambient Weather WS YG315 Cherry Finish Brass Dial Traditional Weather Station User Manual 9 ambient weather Table of Contents Wy iiaae On A A A E A E E EEE DQ Prepar dU ON aana A E EE EENE EN E EE A EAA 2 Care and Cleaning aAA EA A A A EENT OERE 4 Hygrometer Humidity Meter oo eee eecseesecseeeesecsessecseecseceessessessecesesecsesseseeeseeeaesseeeeseaseas 4 1 How the hygrometer Works cicccssisscecivessvcsadesccestvssuvesacesunesavssvvesacesvaesivspuneaucesunesavesvecacesuaesunceute 4 2 Hy grometer Accuracy sissioni iaaa i iaaa oii 4 3 Hygrometer Calibrations ciccsselsecssaelsecesdessecviaesseevseesscevseessecssceyscevsvesseeseesscevseesseesseayseevivereeests D Aneroid Barometer s iieiccasscssictisseieieiesssatioesecestesuesvtesessasboasesuteuesesvontesnsvisenevea sevacduutestontissenssdvtevies 5 1 How the aneroid barometer WOrKS 0 eccesceesecesecesecesecesecececesecececeaecaecaecaecaecaeceaeseaeenaeenes 5 2 Reading the Darome reniei nanana E A AE T O NA AEON 5 3 Absolute vs Relative Pressure usnu E EE EEA 5 4 Barometer Calibration siscisecsvvctacesvnccdvcsvvcdadesvsesscsauneducesvncsavesuyecacesvaesacss uneducesunesavcsviecacesunesuncnun 6 Dial Thermometers cdscessedicessscedonsss velencehesdovsts eatuasviesdesessedivesstesteosbesidvecti cede seo vidanesielaone adenseesan De ETE EiT s PEE E A A A E EA E A E EE EN 8 Measurement Specifications 0 0 2 scescescesceseeeseceseceseeeseceseceseceeeeee2. 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 absolute pressure measured at your location may read 28 62 inHg 969 mb at an altitude of 1000 feet 305 m but the relative pressure sea level is 30 00 inHg 1016 mb The standard sea level pressure is 29 92 in Hg 1013 mb This is the average sea level pressure around the world Relative pressure measurements greater than 29 92 inHg 1013 mb are considered high pressure and relative pressure measurements less than 29 92 inHg are considered low pressure To determine the relative pressure for your location locate an official reporting station near you the internet is the best source for real time barometer conditions such as Weather com or Wunderground com and set your weather station to match the official reporting station 5 4 Barometer Calibration Your barometer will operate from 100 to 7 000 feet with reliable accuracy Aneroid barometers have a small screw on the back for sea level calibration With a flat blade screwdriver turn this screw in either direction slightly while looking at the indicator needle It should move in one direction or the other Tap the barometer to see where the needle settles Continue this procedure until the proper pressure reading is obtained Do not turn the screw counter clockwise to the left
3. capsules is prevented from collapsing by a strong spring Small changes in external air pressure cause the cell to expand or contract This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer Many models include a manually set needle which is used to mark the current measurement so a change can be seen It was invented by Blaise Pascal 5 2 Reading the barometer It is highly advisable to lightly tap the glass near the center brass knob with your fingers before taking a barometer reading The light tap will overcome any friction that may affect accurate hand readings especially during periods of slow atmospheric changes The Coast Guard has informed us that tapping the barometer is even required on the most expensive aneroid barometers because the mechanism is made deliberately stiff The ability if the barometer to indicate changes in barometric pressure makes it a useful instrument in weather forecasting The weather forecast or pressure tendency is based on the rate of change of barometric pressure In general when the pressure increases the weather improves sunny to partly cloudy and when the pressure decreases the weather degrades cloudy to rain The weather forecast is an estimation or generalization of weather changes in the next 24 to 48 hours and varies from location to location The tendency is simply a tool for p
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5. eeeeeeeeeeeeeeeeeeeeneeeneeeneeeseeesees 9 Waranty Information sonaia civescvastvas cies sive cvencves cde suea sven ves ce aaaea ea EaR Version 1 0 Copyright 2010 Ambient LLC All Rights Reserved Page 1 ambient weather 1 Introduction Thank you for your purchase of the Ambient Weather WS YG315 Cherry Finish Brass Dial Traditional Weather Station The following is a guide for preparation care and operation of your traditional weather station 2 Preparation Your weather instrument includes a protective pad to prevent damage to the barometer glass case during shipment Remove this protective pad and circular instruction sheet The barometer is ready to use 3 Care and Cleaning The solid wood case is finished with a clear satin lacquer to protect and preserve the appearance Although occasional use of a good furniture polish is acceptable we recommend periodic cleaning with a very lightly water dampened soft cloth Be sure to wipe the wood dry with a soft cloth before cleaning Avoid use of harsh household cleaners and coarse paper towels which can damage the lacquer coating or scratch the bezel or lens Fingerprints and dirt may be removed the lenses and bezels with a soft cloth lightly dampened with a mixture of water and mild dishwashing liquid Be sure to dry the lens and bezel with a soft cloth after cleaning Do not install the weather station outside The weather station is intended for indoor use only 4 Hygrom
6. eter Humidity Meter 4 1 How the hygrometer works The hygrometer measures the indoor relative humidity The sensor measures the air moisture by a sensitive mechanical coil spring that is bonded with a moisture absorbent material Hygrometers register the percentage of water vapor present in the air compared to the maximum amount that can be present at a given temperature The coils in hygrometers respond slowly and while humidity levels change abruptly it can take an hour or more for the meter to reach an accurate reading Remember that the hygrometer is reading indoor humidity and is vastly different than outdoor humidity as reported by the National Weather Service It is not uncommon to have low humidity reading during cold weather when indoor air is heater Air conditioning also removes moisture from the air The optimum levels are 45 to 50 during heating and cooling seasons Low humidity can cause health problems and can be hard on wood furnishings High humidity can cause mold or mildew to grow 4 2 Hygrometer Accuracy Humidity measurement is among the more difficult problems in basic meteorology Accuracy is difficult to achieve and are subject to drift so need regular recalibration Version 1 0 Copyright 2010 Ambient LLC All Rights Reserved Page 2 ambient weather A further difficulty is that most hygrometers sense relative humidity rather than the absolute amount of water present but relative humidity is a func
7. ion Ambient LLC provides a 1 year limited warranty on this product against manufacturing defects in materials and workmanship This limited warranty begins on the original date of purchase is valid only on products purchased and only to the original purchaser of this product To receive warranty service the purchaser must contact Ambient LLC for problem determination and service procedures Warranty service can only be performed by a Ambient LLC The original dated bill of sale must be presented upon request as proof of purchase to Ambient LLC Your Ambient LLC warranty covers all defects in material and workmanship with the following specified exceptions 1 damage caused by accident unreasonable use or neglect lack of reasonable and necessary maintenance 2 damage resulting from failure to follow instructions contained in your owner s manual 3 damage resulting from the performance of repairs or alterations by someone other than an authorized Ambient LLC authorized service center 4 units used for other than home use 5 applications and uses that this product was not intended such as outdoor use This warranty covers only actual defects within the product itself and does not cover the cost of installation or removal from a fixed installation normal set up or adjustments claims based on misrepresentation by the seller or performance variations resulting from installation related circumstances Version 1 0 Copyright 20
8. rojecting weather conditions and is never to be relied upon as an accurate method to predict the weather Version 1 0 Copyright 2010 Ambient LLC All Rights Reserved Page 3 ambient weather The barometer includes a manually set needle which is used to mark the current measurement so a change can be seen Barometric readings should be taken daily Remember that the rate of change of barometric pressure is important in determining weather changes You may want to take multiple readings each day during periods of unstable weather conditions The following basic rule of thumb will hold true in using the barometer to predict weather conditions e A fast rise in barometric pressure means goo weather of short duration e Arapid drop in barometric pressure means disturbances nearby showers of short duration e Regular elevation in barometric pressure usually will indicate a clear dry weather conditions cold and dry in the winter A slow but continuous drop in barometric pressure will indicate persistent bad weather Slow drops of 2 3 tenths mbar per 24 hours a depression of some distance away Drops of 1 2 tenths mbar per hour means disturbances nearby of short duration Steep drops of 6 10 tenths mbar within 4 5 hours period indicates coming rain and or storm with strong winds 5 3 Absolute vs Relative Pressure To compare pressure conditions from one location to another meteorologists correct pressure to sea level conditions Because the
9. tion of both temperature and absolute moisture content so small temperature variations within the air in a test chamber will translate into relative humidity variations 4 3 Hygrometer Calibration All hygrometers are preset at the factory but may require recalibration due to shipping and storage To calibrate the sensor compare the humidity against a known source or perform the following procedure Soak a folded cloth or dish cloth with water and place the cloth on a plate saucer or another relatively flat container Remove the hygrometer from the weather station plaque by simply placing your hand against the back plate and pushing the instrument out of the mounting hole Carefully lay the back edge of the hygrometer flat on a damp cloth Allow 30 45 minutes for the hygrometer to read approximately 95 humidity If this reading is not indicated carefully rotate the coil by using a small screwdriver counter clockwise until the reading hand is 95 Remount the hygrometer into the wood plaque The hygrometer will gradually return to indicate the ambient humidity in 30 45 minutes IMPORTANT NOTE Any other method that has not been described here to adjust the hygrometer could damage the instrument 5 Aneroid Barometer 5 1 How the aneroid barometer works An aneroid barometer uses a small flexible metal box called an aneroid cell This aneroid capsule cell is made from an alloy of beryllium and copper The evacuated capsule or usually more
10. too far since the screw can fall out After the initial calibration no further adjustment will be required unless the barometer is moved to a new geographic location 6 Dial Thermometer The dial thermometer uses a bimetallic strip wrapped into a coil One end of the coil is fixed to the housing of the device and the other drives an indicating needle The principle behind a bimetallic strip thermometer relies on the fact that different metals expand at different rates as they warm up By bonding two different metals together the coil bends causing the needle to move Bimetallic thermometers are not as accurate as bulb mercury or red spirit thermometers The dial thermometer Version 1 0 Copyright 2010 Ambient LLC All Rights Reserved Page 4 ambient weather should require no calibration 7 Installation To install the traditional weather station hang the plaque on a wall with the hole built into the plaque Only install indoors in a clean area 8 Measurement Specifications The following table provides specifications for the measured parameters Measurement Range Accuracy Resolution Indoor Temperature 40 to 140 F 3 6 F 2 F Indoor Humidity 0 to 100 20 45 9 1 45 75 6 75 98 9 Barometric Pressure 940 hPa to 1070 hPa 1060hPa 1030hPa 10hPa 1 hPa about 100 to 7 000 1030hPa 990hPa 5hPa 990hPa 960hPa 10hPa 9 Warranty Informat
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