Setup Mode - Extech Instruments AN310 User Manual

Timed Average Mode
1. From the normal operating mode, press and hold the U/mode button for 2 seconds to enter
the Multi‐Point Average mode first and then press U/mode one more time momentarily to
enter the Timed Average Mode (the AVG and the elapsed timer icons will switch ON).
2. Press HOLD to begin recording. The elapsed timer starts (as shown on the upper display
digits) and the clock icon flashes on and off. The longest amount of time the meter can
operate in Timed Average Mode is 19,999 seconds.
3. Press U/mode to stop the clock and to calculate the timed average. The upper LCD will
display the elapsed time and the lower LCD will show the averaged readings. The LCD will
flash the 'AVG' and the elapsed timer icons.
4. Press L/mode to view the average for other available measurements.
5. Press U/mode to return to the normal operating mode.
Setup Mode
Entering Setup Mode
Press and hold the POWER SET button for 2 seconds to enter Setup mode. Two options are
available: P1.0: Unit and P2.0: AREA.
Use the up/down buttons to toggle between P1.0 UNIT and P2.0 AREA options.
P1.0: Unit Selection
1. Once in setup mode, at the P1.0 UNIT display, momentarily press the HOLD button to enter
the P1.0 UNIT menu.
2. Use either arrow button to switch between metric and imperial units. The available units
are: air velocity (m/s, fpm), temperature (C, F), air volume (CMM, CFM), and area size (cm²,
inch²).
3. Press HOLD momentarily to return to the P1.0 display.
4. Press either arrow button to move to the P2.0 AREA option and follow the steps below.
P2.0: Area Size Selection (enter square inches or square centimeters)
1. In setup mode, from the P2.0 AREA display, press HOLD to enter the AREA setting menu. The
LCD will show '99999' in the lower display with the first digit flashing.
2. Use the up arrow button change the flashing digit (from 0 through 9).
3. Use the down arrow button to move to the next digit. Use the up arrow button again to
change the flashing digit. Continue in this way until the desired AREA value is displayed.
4. Press the Hold button again momentarily to store the value and to return to the P2.0 display.
5. Press either arrow button to move to the P3.0 RH OFFSET option and follow the steps below.
P3.0: Relative Humidity (RH) Offset Selection
1. When in setup mode P3.0 press HOLD to enter the RH offset setting. The LCD will show 0.0
RH in the upper display.
2. Press U/mode to increase offset value and L/mode to decrease offset.
3. Pres HOLD once more to return to P3.0.
4. Press and hold the POWER SET button for 2 seconds to return to the normal operating
mode.
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