407117 Datasheet, PDF (4/6 Pages) Extech Instruments Corporation. – Heavy Duty Mini Vane CFM Thermo Anemometer

Meter Description
1. LCD Display
2. Keypad
3. Rubber protective holster
4. Battery compartment (rear)
5. RS-232 PC Interface jack
6. Sensor input plug
7. Telescoping antenna sensor
Note: To access the rear battery compartment
remove the meter's rubber protective holster.
Meter Operation
Air Velocity Measurements
1. Connect the sensor to the sensor input jack on top of the meter.
2. Turn on the meter using the Power button.
3. Select the VELOCITY function using the VEL/FLOW button. The LCD will display
VEL when the velocity mode is selected.
4. Select the desired temperature units using the C/F select button. The LCD will reflect
the current unit selection.
5. Select the desired air velocity units using the UNIT button. The LCD will reflect the
current unit selection.
6. Open the antenna to the desired length.
7. Place the sensor in the air current to be measured. Have the air flow meet the
sensor head in the direction of the word IN printed on the sensor head.
8. View the air velocity and temperature readings on the LCD Display. The large main
LCD display shows the Air Velocity reading. The lower LCD sub-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 407117 allows the user to record and view the highest (MAX) and lowest (MIN)
readings.
1. Press the RECORD/RECALL button once. The REC indicator will appear on the
display and the meter will begin keeping track of the MAX and MIN values.
2. To view the MAX reading, press RECORD/RECALL again. The MAX indicator along
with the maximum reading will appear on the LCD display.
3. Press RECORD/RECALL again to view the minimum value, the MIN indicator along
with the minimum reading will appear on the LCD display.
4. To return to normal operation, press and hold the RECORD/RECALL button for
approx. 3 seconds. The display indicators REC, MAX, and MIN will disappear.
4 Model 407117 - Version 2.1 - November 2005