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Summary of Contents for ennoLogic eA990R
- Page 1 Digital Anemometer User Manual...
- Page 2 1. Overview Thank you for purchasing the ennoLogic eA990R anemometer, a high quality instrument which measures 8 parameters: Wind Speed (mph, m/s, ft/min, knots, km/h) • Wind Chill (°C / °F) • Air Temperature (°C / °F) • Humidity (%) •...
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Page 3: Specifications
Specifications: Parameter Units Range Resolution Accuracy 0 to 65 0 to 30 ft/min 0 to 5860 Wind Speed ±5% knots 0 to 55 km/h 0 to 90 0 to 30m/s, -45 ±1 to 10 Wind Chill 0 to 65 mph, ±1.8 -49 to 50 -29 to 70... -
Page 4: Product Description
F to 122 F (0 C to 50 Operating Temperature 10% to 90% RH Operating Humidity F to 140 F (-10 C to 60 Storage Temperature 10 to 75% RH Storage Humidity Lithium Polymer, 300mAh, rechargeable Battery 11 mA (14 mA with backlight on) Current Consumption 4.5”... - Page 5 5. Backlight Button 6. Units Button 7. Mode Button 8. Power Button 9. Battery Charge Port 10. Lanyard Attachment Point 11. Tripod Mount How to Use Your Anemometer Turning the Anemometer On and Off Press the Power button briefly to turn the anemometer on. Press the Power button for more than one second to turn the anemometer off.
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Page 6: Hold Function
Cycling Through Measurement Parameters Press the Mode button briefly to change the displayed parameter. The instrument will cycle through the parameters in the following order: Wind Speed » Wind Chill » Temperature » Relative Humidity » Heat Index » Dew Point » Barometric Pressure » Pressure Altitude. Hold Function To freeze the current reading, press the Backlight button for more than 2 seconds. -
Page 7: Beaufort Scale
Max: In this mode the meter will display the maximum value registered since it was powered on. Min: When in this mode the meter will display the minimum value. AVG: When in this mode the meter will display the average of all values since it was powered on. - Page 8 Parameter 1: Wind Speed To measure wind speed, hold the anemometer into the wind or air flow you want to measure, and the device instantly begins displaying wind speed in miles per hour (mph). To change the unit, press the Units button.
- Page 9 Parameter 2: Wind Chill Wind chill is the perceived lowering of air temperature experienced on exposed skin due to wind. The faster the wind blows, the more readily it cools your skin as it replaces the ambient warm air surrounding your skin. In other words, the air “feels” colder than it is because of the chilling effect of the wind.
- Page 10 Parameter 3: Temperature After turning the unit on, press the Mode button twice to display temperature. To take a measurement, hold the anemometer so air passes through it. Temperature response depends upon air flow through the unit due to the location of the temperature sensor inside the unit.
- Page 11 Parameter 4: Relative Humidity Relative humidity is the amount of moisture in the air compared to the maximum amount of moisture the air can "hold" at that temperature. To measure relative humidity, turn on the anemometer, and press the Mode button 3 times. The display will show “%RH” below the value of relative humidity.
- Page 12 Parameter 5: Heat Index The heat index is what the temperature feels like to the human body when relative humidity is combined with air temperature. Heat index is only valid at temperatures at or above 80 °F. The human body cools itself by perspiration, which removes heat from the body by evaporation.
- Page 13 Parameter 6: Dew Point Temperature The dew point is the temperature at which air is saturated with water vapor. When air has reached the dew-point temperature the water vapor is condensing at the same rate at which liquid water is evaporating.
- Page 14 Parameter 7: Barometric Pressure Barometric pressure is the force per unit area exerted by the entire column of air above that area. Barometric pressure measurements are displayed by the anemometer in inches of mercury (inHg), hectopascal (hPa), or millibar (mbar). Standard sea-level pressure, by definition, equals 29.92 inches of mercury.
- Page 15 Parameter 8: Pressure Altitude & Relative Altitude The eA990R measures pressure altitude and not absolute altitude (unlike a GPS). Pressure altitude is a relative altitude measurement based on barometric pressure. Pressure altitude is the altitude indicated by an altimeter that is adjusted to measure height above the Standard Datum Plane.
- Page 16 Relative Altitude Measurement: The ennoLogic anemometer is able to display relative altitude (also referred to as climb or ascent/descent). Relative altitude allows you to measure changes in altitude from the point where you enter “Relative Altitude” mode. To enter this mode, press the Mode button until you get to altitude, then press and hold the Units button for five seconds.
- Page 17 Number Calibration Function Mode Wind Speed Temperature Relative Humidity Barometric Pressure Pressure Altitude Display Battery Voltage Step 3: Press the Backlight and Mode buttons to choose the digit you wish to change (the selected digit will flash). Use the Max and Units button to change the value.
- Page 18 If you want to calibrate the altitude to your current true local altitude, you must subtract a pressure dependent offset from the altitude value you want to calibrate for. This offset depends on the current atmospheric pressure at the time of calibration. To determine the offset, you calibrate the anemometer to an altitude of "00000".
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Page 19: Battery Replacement
Turn the anemometer back on and check the altitude. Its displayed value will now be very close to 500 feet (499 feet in this example, resolution is limited by barometric pressure resolution.) Keep in mind that your new altitude reading is still pressure dependent. - Page 20 Digital Anemometer ennoLogic eA990R Made in China User Manual Version 1.2. Revised 06/11/2020. ® © 2020 ennoLogic . All rights reserved. PO Box 25207, Eugene, OR 97402 U.S.A. http://ennologic.com...
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