User manual

AN300‐EU‐ENv1.11/13

Operation

AirVelocity,Volume,andTemperatureMeasurements

1. SwitchthemeterONbypressingthePOWER buttonmomentarily.PressthePOWER

buttonagaintoswitchthemeterOFF.

2. Notethatthemeterwillautomaticallyenterthesleepmodeafter20minutesofinactivity.

Todisablethisfeature:withthemeterOFF,pressandholdthePOWERandtheU/mode

buttonsfor2seconds.TheLCDwilldisplay'n'asthemeterswitchesON.Nowthesleep

modeisdisabledandtheusermustpressthePOWERbuttonmomentarilytoswitchthe

meterOFF.

3. WhenthemeterisON,theairvelocityreadingisdisplayedontheupperdisplaydigitsin

meterspersecond(m/s)

orfeetperminute(fpm).ThelowerdisplayareacanshowAir

Volume(CMM/CFM)orAirTemperature(°C/°F)readings,usetheL/modebuttontotoggle

betweenthetwo.Notethatanareameasurementmustbeprogrammedintothemeter(in

theSETUPmode)beforeaccuratevolumemeasurementscanbemade.



4. Placethemeter’svaneintheairstream.Theairmustenterthevanefromtherearofthe

meter.Thetemperaturesensorislocatedatthecenterofthevaneontherearofthemeter.

5. ReadthemeasurementdataontheLCD.

6. Tochangebetween

ImperialandMetricunitsofmeasurerefertotheSETUPmodesection.

7. TomeasuretheAirVolumeofaduct,firstmeasuretheduct’sarea(seetheAppendixfor

areacalculations)andthenentertheareavalueinthemeter’sSETUPmodeinin

orcm

.

Aftertheareavaluehasbeenentered,presstheL/modebuttontoswitchthelowerdisplay

fromAirTemperaturetoAirVolume.Placethemeterintheairstreamtomeasurevolume.

8. Optionally,measureAirVolumewithanairflowconeadaptorbyfirstattachingoneofthe

adaptorsto

themeter(theoptionalconeadaptorkitincludesaroundandasquarecone;kit

partnumberAN300‐C).Themeterwillautomaticallyrecognizetheadaptorandthe‘INSERT

ConeShape’promptwillappearontheLCD(theadaptoriconwillalsoappear).Selectround 

orsquareusingthemeter’skeypad.Notethat,regardlessoftheAREAsettingintheSETUP

mode,themeterwilldefaulttothedimensionsoftheattachment(Square:356x346mm

[13.6x13.6”);Round:210mm[8.3”]diameter).NOTE:Ensurethattheairflowadaptoriswell

mountedandlockedbeforetakingmeasurements.

LCDbacklight

PresstheU/modebuttontoswitchONtheLCDbacklight.Thebacklightwillautomaticallyswitch

OFFafterapproximately10secondstoconservebatterypower.Notethatthebacklighting

switchesONautomaticallywhenthemeterisswitchedONbytheuser.