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User's Manual

CFM Thermo Anemometer

Air Velocity, Air Flow, and Temperature

Model 407114

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Summary of Contents for 407114

Page 1: ...User s Manual CFM Thermo Anemometer Air Velocity Air Flow and Temperature Model 407114 ...

Page 2: ...atulations on your purchase of the Extech CFM Thermo Anemometer This instrument measures Air Velocity Air Flow volume and Temperature The RS 232 PC interface provides data acquisition functionality Proper use of this meter will provide years of reliable service ...

Page 3: ...it data stream Operating Temperature 32 F to 122 F 0 C to 50 C Operating Humidity Max 80 RH Power Supply 9V battery Power Current Approx 8 3 mA DC Weight 0 84 lbs 381g including battery probe Dimensions Main instrument 7 1 x 2 8 x1 3 180 x 72 x 32mm Sensor Head 72mm Diameter Range Specifications Air Velocity Range Resolution Accuracy rdg m s meters per sec 0 40 25 00 m s 0 01 m s 2 0 2 m s km h ki...

Page 4: ... this manual for more details This button also functions as the DECIMAL point when programming UNIT Press to select the unit of measure for Air Velocity This button also functions as the DOWN ARROW button when programming FLOW VELOCITY Press to select the mode of operation In FLOW mode the meter displays air volume In VELOCITY mode the meter displays air speed RIGHT Arrow button Used when programm...

Page 5: ... display shows the temperature reading Data Hold Feature 1 While taking measurements press the HOLD button to freeze the LCD reading for later viewing 2 The DH indicator will appear on the LCD when the display is in Data Hold mode 3 Press HOLD again to return to normal operation Maximum and Minimum Recording The 407114 allows the user to record and view the highest MAX and lowest MIN readings 1 Pr...

Page 6: ...button to select one of the two modes listed below 2 3V MAX MODE LCD displays 2 3 the measured value AVG MODE Up to 20 readings can be taken separately and averaged Select the AVG mode via the FLOW MODE button and then press the AVG START button to take a reading Up to 20 readings can be taken and averaged The lower LCD display provides a 1 to 20 counter and each time a reading is taken the counte...

Page 7: ...e sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for ...

Page 8: ...using the above formulae Unit of Measure Conversion Table m s ft min knots km h MPH 1 m s 1 196 87 1 944 3 6 2 24 1 ft min 0 00508 1 0 00987 0 01829 0 01138 1 knot 0 5144 101 27 1 1 8519 1 1523 1 km h 0 2778 54 69 0 54 1 0 6222 1 MPH 0 4464 87 89 0 8679 1 6071 1 Width W Height H Area A Width W x Height H CFM ft3 min Air Velocity ft min x Area ft2 CMM m3 min Air Velocity m sec x Area m2 x 60 Radius...

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