User's Guide 5 in 1 Environmental Meter Model: EN300 Anemometer Humidity Meter Light Meter Thermometer Sound Level Meter
Introduction Congratulations on your purchase of this Extech Meter. The EN300 is five professional meters built into one convenient package. This meter ships fully tested and calibrated and, with proper use, should provide many years of reliable service. Features This 5-in-1 professional measuring instrument provides the following functions: 1. Anemometer uses a low-friction ball bearing mounted wheel design for high accuracy. 2.
Safety International Safety Symbols This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information. Double insulation Cautions • Improper use of this meter can cause damage, shock, injury or death. Read and understand this user manual before operating the meter. • Inspect the condition of the probe and the meter itself for any damage before operating the meter. Repair or replace any damage before use.
Meter Description 1 1. Microphone 2. Light Sensor 3. LCD display 4. Hold Button 5. Power Button 6. Unit / Zero Button 7. Air Speed Sensor 8. Thermocouple Input Socket l 9. RS-232 Output Terminal 9 10 2 14 3 10. AC power adaptor socket 4 11. Max. / Min. Button 11 12 5 6 12. Function Button 13. °C/°F Button/Lux/Ft-cd Button 13 14. On rear: Battery Compartment, Tripod mount, Stand 7 8 4 EN300-EU-EN-V1.1.
Operation Powering the meter 1. Press the Power button to turn the instrument ON 2. If the meter does not turn on or if the " replace the batteries. 3. Press the Function button to select the measurement needed. " low battery symbol appears in the display, Note: The display orientation rotates, depending on the function selected. Microphone up: Sound, Light, Temperature Air speed sensor up: Airspeed + Temperature, Humidity + Temperature Anemometer Air Velocity Measurement 1.
Hygrometer Humidity & Ambient Temperature Measurement 1. Select the Relative Humidity function by pressing "Function Button" until the display indicates %RH. 2. The humidity and temperature readings will be displayed on the LCD. 3. When the meter is placed into a new environment, a few minutes are required to reach a stable condition. Light Measurement 1. Select the Light Measurement function by pressing the "Function Button" until a light unit (Lux or Ft-cd) is displayed. 2.
Changing °C / °F units During temperature measurements, press the °C / °F button once to change the temperature units from "°C" to "°F". Hold Function Press the "Hold Button" to freeze the current reading value, "HOLD" symbol appears on the display. Press the button again to continue normal operation. Data Record Function 1. The Data Record function records & displays the maximum and minimum reading values. Start the Data Record function by pressing the "Max/Min Button" once.
Specifications General Specifications Display Measurement Operating Humidity Operating Temperature Over Input Display Data Output Power Supply Power Consumption Weight Dimension LCD display, LCD size: 41.5 x 31.5 mm. 5 in 1 : Anemometer (Air velocity + Temperature) Humidity (%RH + Temperature) Light Thermometer ( type K ) Sound level 80%RH Max. 0 to 50°C (32 to 122°F) Indication of "- - - - " RS 232/USB PC serial interface 1.5 DC V battery ( UM4, AAA ) x 6 PCs, 9V DC adapter input.
Hygrometer (Humidity/Temperature) Units Range Resolution Accuracy < 70 %RH :± 4 %RH %RH 10 to 95 %RH 0.1 %RH °F 32 to 122°F 0.1°F ± 2.5°F 0 to 50°C 0.1°C ± 1.2°C °C ≧ 70 %RH :± ( 4%rdg + 1.2 %RH ) Light Units Lux Ft-cd Range Resolution 0 to 2,200 Lux 1 Lux 1,800 to 20,000 Lux 10 Lux 0 to 204.0 Fc 0.1 Ft-cd 170 to 1,860 Fc 1 Ft-cd Accuracy ± 5% rdg ± 8 digits Sound Level Microphone ½” Electret condenser microphone Measurement Range 35 to 130 dB, Auto range Resolution 0.
