Extech Instruments AN100 Manual

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AN100-en-GB_V3.5 6/15

AirFlowAveragingMode

1. Toenter20PointAveragingMode,pressandholdtheAVGbuttonuntilitbeepstwice.The

AVGiconwillbedisplayed.

2. TakeameasurementandpresstheAVGbutton.AsinglebeepwillsoundandtheHOLDicon

willappearinthedisplay.



3. Theaveragereadingwillbedisplayedandnumberofreadingsmeasuredwillappearinthe

upperrighthandcornerofthedisplay.After5seconds,thedisplaywillreturntothecurrent

reading.

4. Repeatsteps2‐3untilthedesirednumberofpointshavebeenmeasured.

5. To

returntostandardairflowmeasuringmodepressandholdAVGbuttonuntilmeterbeeps

twice.

Note:Inthestandardvelocitymeasuringmode,presstheAVGbuttononcetorecallthe

previousaverage.TheaveragewillbeclearedwhenyouentertheAveragingModeagain.

DataHold(AirVelocity/AirFlow)

1. Whiletakingmeasurements,presstheHOLDbuttontofreezetheairvelocity/airflow

reading.

2. TheHOLDindicatorwillappearinthebottomoftheLCDdisplay.

3. PressHOLDagaintoreturntonormaloperation.

MAX/MIN/AVGRecord(AirVelocity/AirFlow) 

Thisallowstheusertorecordandviewthehighest(MAX),lowest(MIN)andaverage(AVG)

readings.

1. PresstheAirflow/VelocityMAX/MINbutton.

TheMAXindicatorandRECORD

indicatoralongwiththeMaxreadingwillappearontheLCDdisplayandthemeterwillbegin

keepingtrackoftheMAX,MINandAveragevalues.

2. PresstheMAX/MINbuttonagaintoviewtheminimumreading.TheMINindicatoralong

withtheminimumreadingwillappearontheLCDdisplay.



3. PresstheMAX/MINbuttonagaintoviewtheaveragereading.TheAVGindicatoralongwith

theaveragereadingwillappearontheLCDdisplay.

4. PresstheMAX/MINbuttonagaintodisplaycurrentreadings.NOTE:themeterwillkeep

recordingMAX/MIN/AVGreadings.

5. ToclearandstopMAX/MIN/AVGrecording

andreturntonormaloperation,pressandhold

theMAX/MINbuttonuntilthemeterbeepstwice.

AutomaticPowerOFF

Themeterautomaticallyturnsoffafter20minutes.Todefeatthisfeature:

1. TurnthemeterOFF.

2. Pressandholdthe(Backlight)keywhileturningthemeterON.

3. “disAPO”willappearinthedisplay.TheAUTOPOWEROFFfeaturewillnowbedisabled.

4. NotethatAUTOPOWER

OFFisre‐enabledeachtimethemeteristurnedon.

5. AlsonotethatAUTOPOWEROFFisdisabledinCFM/CMMorAveragemode.