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Phone: (828) 698-1952 Toll Free: (877) 210-2344
E728 Eco-Celli Barometer
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The Eco-celli is a patented new development in the ecological design of liquid barometers. The Eco-celli contains no mercury. The U-shaped glass tube is filled with a red silicon-based fluid as well as a gas. This comprises the barometer part of the instrument. The barometers scale is four times larger than a standard mercury barometer making it much easier to read the scale.
The precision thermometer is filled with blue colored methyl alcohol. An increase or decrease in temperature can cause the fluid in the barometer to expand and affect the pressure reading. This is corrected by setting the movable scale, which is attached to both the barometer and thermometer, to the surface of the blue fluid in the thermometer.
The barometric pressure can be read by sliding the index attached to the red tube to the top of the red fluid level. This also serves to show the pressure trend as it remains in place as the red fluid changes level with the changing air pressure.
The Eco-celli comes with a calibration kit to adjust the unit for an altitude above sea level. The dark mahogany colored frame and glass tubes are packaged separately in the same box and require simple assembly by the final purchaser.
The model E728 has a simulated high gloss burl wood frame outlined in brass colored trim on the inside and outside edges.
Made in Belgium
Measurements:
U-shaped tube: length = 32.28 inches, width = 1.57 inches
Thermometer tube: 32.28 inches
Thermometer scale: 32 to 122 degrees Fahrenheit
Barometer scale readings from 29.00 to 31.00 inches
Frame size = 41 inches long by 6 inches wide
How It Works
The Eco-celli is a new concept in liquid barometers with the precision of a mercury barometer without the mercury hazard. The Eco-celli looks similar to a traditional mercury barometer but the basic principle is completely different, based on the compressibility of gasses instead of the weight of liquid mercury. Looking at your Eco-celli, on the upper left-hand side of the barometer you can see the gas reservoir above the red fluid tube. The gas provides a constant counter-pressure against the atmospheric pressure.
High Pressure or Increasing Pressure:
Air pressure pushes down on the open side of the barometer tube onto the surface of the red fluid. The gas in the barometer will be compressed and you will notice the red fluid level in the right hand portion of the barometer tube falling. High pressure or increasing pressure indicates fair or improving weather
Low Pressure or Decreasing Pressure:
When the air pressure decreases on the surface of the red fluid, the gas in the barometer will expand and the red fluid will rise in the right-hand portion of the barometer tube. Low pressure or decreasing pressure indicates foul weather or deteriorating weather conditions
A very important factor in measuring air pressure is the temperature. High temperatures will cause fluids and gases to expand causing an error in the readout of the barometer scale. The Eco-celli has solved that problem. On the right side of the Eco-celli is mounted a high precision thermometer parallel to the barometer tube. This thermometer has the same thermal expansion/compression rate as the barometer. With the help of a movable scale attached to both the barometer and thermometer tubes, you set the scale to the actual temperature (top of blue fluid level). The error caused by the temperature is automatically corrected and you can now read the correct air pressure. On the barometer scale, there is a slider. This is the tendency pointer. As you read the air pressure (top of red fluid) place the slider at that point. When air pressure fluctuations occur, the red fluid level will differ from the last position of your pointer. The difference is the indication of the coming weather. The amount and speed of the changes in air pressure give a good indication of when to expect weather changes. The weather forecast distributed on television and radio are only for a broad area and do not take into account factors such as forests, lakes, rivers, etc. These effects in meteorology are called “ the micro-climate”. With the help of your Eco-celli barometer, you will be able to make forecasts for your own “micro-climate” for a time interval of 6 to 12 hours in advance.
The Eco-celli remarkable and important advantages
1. The barometer system does not contain any hazardous elements such as mercury, but it does contain fluid based on red-pigmented oil. The thermometer is filled with blue colored alcohol.
2. The scale is 4 times larger than a standard mercury barometer and with the highly colored fluid, much easier to read.
3. The barometer tubes are handcrafted out of high quality capillary glass. All glass tension is removed during production. This, together with the low specific gravity of the colored oil, insures safe movement and shipment of the barometer.
4. Due to the unique construction of the Eco-celli, there are no problems moving the unit from place to place or even placing it vertically. The rising or falling of the red fluid will be reduced by the construction in order to prevent mixture of oil and gas.
Initial Setup
When you receive your Eco-celli barometer you will notice that the upper right-hand tube has a rubber hose with a rubber plug attached to its end.
1. Hang the barometer on a wall. If you notice gaps in the red fluid column, pinch the rubber tube between your thumb and pointing finger. You will see the gaps disappear.
2. Now remove carefully the rubber plug and rubber hose. Insert the hollow glass plug that was included with your Eco-celli into the end of the red fluid tube. This plug prevents dust from mixing with the fluid but allows air pressure to enter the tube.
3. The barometer is now fully functional. Please wait at least one hour before taking pressure readings. This allows the instrument to reach the same temperature as its surroundings.
Taking a Reading
Located between the barometer (red fluid) and thermometer (blue fluid) is the barometer scale. Once the unit has acclimatized with its surroundings, you may begin taking air pressure readings.
Slide the entire scale up or down until the thermometer pointer is even with the top of the blue fluid level of the thermometer. By doing this, temperature correction is completed and pressure readings may be taken.
Set the tendency pointer on the barometer tube to the top of the red fluid level and take your reading off of the scale. The reading will be in inches. The next time you take a reading, you should see a difference between the location of the tendency pointer and the level of the red fluid. Unless there is severe weather approaching, air pressure does not change rapidly so allow several hours between readings.
Calibration of the Eco-celli Barometer
The Eco-celli barometer is calibrated to sea level (0 feet). When you install the barometer in an area that has a different height (more than 100 feet) above or below sea level, you will need to calibrate your barometer. A calibration kit comprised of a syringe, needle stub, and capillary tube was included with your barometer. There are two methods of calibration. Method one: the first thing you will need is the current local air pressure. Contact a local airport, television station, National Weather Service office, or visit a weather web site such as weather.com. Once you have the correct local air pressure, remove fluid from the red tube using the calibration set until the fluid level matches the correct air pressure. Have paper towels available to catch any spills as the colored oil will stain anything it comes in contact.
The second calibration method is to calculate the air pressure difference from sea level. To find your height above sea level, contact your local city/town hall. Each 25 feet above sea level is equal to 0.03 inches on the scale. Remove the calculated amount of fluid until the correct fluid level is reached. Please save the removed fluid in the syringe so it may be added if the barometer is moved to a different location.
Important Notes:
CAUTION WITH HIGH TEMPERATURES. The barometer is very heat sensitive. Do not place this barometer on places that will be overheated by the sun. The barometer will not function properly and the thermometer will be damaged if the temperature is above 120 degrees F.
SPILLING OF THE COLORED FLUID. If the red barometer fluid id spilled, you must act very quickly. The fluid is not hazardous, but is a very strong colorant. Use lots of water to rinse the stain. Then use warm water and soap to clean the stain to prevent permanent coloring.
TRANSPORTATION. If the barometer is to be transported, you should close the end of the barometer tube with the rubber hose and rubber stopper.
MAINTENANCE. Use a dry lint free cloth. Use of abrasive cleaning products is prohibited. Woodwork and metal parts can be maintained with the help of a bee-wax containing spray and lint free cloth. DO NOT spray directly onto the instrument. Spray a bit of product onto a cloth and gently rub the woodwork and metal parts.