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pressure  reading  is  obtained.  Do  not  turn  the  screw counter-clockwise  (to  the  left)  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.

 

Galileo Thermometer 

6.1

 

How the Galileo thermometer works 

 
The  Galileo  thermometer  consists  of  a  sealed  glass  tube  that  is  filled  with  paraffin  oil  and  several 
floating bubbles. The bubbles are glass spheres filled with a colored liquid mixture. 
 
Attached  to  each  bubble  is  a  little  metal  tag  that  indicates  a  temperature.  These  metal  tags  are 
calibrated  counterweights.  The  weight  of  each  tag  is  slightly  different  from  the  others.  Since  the 
bubbles are all hand-blown glass, they aren't exactly the same size and shape. 
 
The  bubbles  are  calibrated  by  adding  a  certain  amount  of  fluid  to  them  so  that  they  have  the  exact 
same  density.  So,  after  the  weighted  tags  are  attached  to  the  bubbles,  each  differs  very  slightly  in 
density  (the  ratio  of  mass  to  volume)  from  the  other  bubbles,  and  the  density  of  all  of  them  is  very 
close to the density of the surrounding paraffin oil. 
 
As the temperature of the air outside the thermometer changes, so does the temperature of the paraffin 
oil  surrounding  the  bubbles.  As  the  temperature  of  the  paraffin  oil  changes,  it  either  expands  or 
contracts,  thereby  changing  its  density.  So,  at  any  given  density,  some  of  the  bubbles  will  float  and 
others will sink. The bubble that sinks the most indicates the approximate current temperature. 

6.2

 

How to read the Galileo thermometer 

Make certain the weather station is installed on a flat surface.    The lowest temperature bubble within 
the group at the top of the cylinder displays the current temperature. 

 

The lowest floating ball indicates the current temperature. 

 

If all of the balls float to the top, the temperature is below the lowest floating ball. 

 

If all of the balls sink, the temperature is above the highest ball. 

6.3

 

Galileo thermometer warnings 

 

 

Warning:   

This product is not a toy; keep away from children 

 

 

Warning:   

Contains paraffin oil. In case of breakage and contact with liquid contents, 

wash hands with soap and water. 

 

 

Warning:   

Do not ingest liquid. In case of ingestion, wash mouth with water and call a 

physician or your local poison control center. 

 

 

Warning:   

Use protective gloves to clean up spilled liquid and broken glass. 

 

Содержание WS-YG710S-Y

Страница 1: ...eter Humidity Meter 2 4 1 How the hygrometer works 2 4 2 Hygrometer Accuracy 3 5 Aneroid Barometer 3 5 1 How the aneroid barometer works 3 5 2 Reading the barometer 3 5 3 Absolute vs Relative Pressure 4 5 4 Barometer Calibration 4 6 Galileo Thermometer 5 6 1 How the Galileo thermometer works 5 6 2 How to read the Galileo thermometer 5 6 3 Galileo thermometer warnings 5 7 Quartz Clock 6 8 Measureme...

Страница 2: ...ith 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...

Страница 3: ...olute moisture content so small temperature variations within the air in a test chamber will translate into relative humidity variations 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 capsules is prevented...

Страница 4: ...nths 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 Becau...

Страница 5: ...y of all of them is very close to the density of the surrounding paraffin oil As the temperature of the air outside the thermometer changes so does the temperature of the paraffin oil surrounding the bubbles As the temperature of the paraffin oil changes it either expands or contracts thereby changing its density So at any given density some of the bubbles will float and others will sink The bubbl...

Страница 6: ...gins 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...

Страница 7: ...vers 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 ...

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