Extech Instruments AN320 Manual

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AN320-en-GB_V1.2 11/14

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.

3. Pre ss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.