Extech Instruments 45170CM Manuale utente

USERGUIDE

5‐in‐1EnvironmentalMeterwithCFM/CMM



Model45170CM

45170CM‐en‐GB_V1.11/15

Introduction

ThankyouforchoosingtheExtechModel45170CM,5‐in‐1EnvironmentalMeter.The45170CM

measuresAirFlow,AirVelocity,RelativeHumidity,Temperature,andLightLevel.Thisdeviceis

shippedfullytestedandcalibratedand,withproperuse,willprovideyearsofreliableservice.

Pleasevisitourwebsite(www.extech.com)tocheckforthelatestversionofthisUserGuide,

ProductUpdates,andCustomerSupport.



MeterDescription

1. VaneAirflowSensor

2. TypeKThermocoupleInputJack

3. Display

4. Power/ESCButton

5. Unit/Zero/ Button

6. C°/F°/Lux/Ft‐cd/Area/▲Button

7. LightSensor

8. RHandAirTemperatureSensors

9. HoldButton

10. Rec/EnterButton

11. Mode/▼Button

Note: Battery compartment on back of meter.

PowerON‐OFF

PressthePower/ESCbuttontoturnpowerONorOFF.Themeterwillperformashortself‐test

whenitisswitchedON.IfthemeterdoesnotswitchON,pleasecheckthestatusofthebattery.



45170CM‐en‐GB_V1.11/15

Measurements

A. AirVelocityMeasurements

1. UsetheModebuttontosteptotheAnemometermode(An).InAnemometermode,

thedisplaywillshowAirVelocityandTemperature.

2. PressUnitbuttontoselectdesiredunitofmeasure(FPM,MPH,KNOT,KM/H,orM/S).

3. FacetheAirFlowSensorintothesourceoftheairstream.

4. Allowtimeforthereadingtostabilizeandthennotethevalueonthedisplay.

B. RelativeHumidityandAmbientAirTemperatureMeasurements

1. UsetheModebuttontosteptotheRHmode(rH).InRHmode,thedisplaywillshow

theRelativeHumidityreading(upperright)andtheTemperaturereading(lowerleft).

2. Pressthe°C/°Fbuttontoselectthedesiredtemperatureunitofmeasure.

C. TemperatureMeasurementsUsingTypeKThermocouple

1. UsetheModebuttontosteptotheTypeKTemperaturemode(tP).InTemperature

mode,thedisplaywillshowonlythethermocoupletemperature.

2. Plugthethermocoupleintothemeter'sthermocoupleinputjackonthefaceofthe

meter.Ifnothermocoupleisconnected,orifthethermocoupleisdefective,themeter

willdisplaydashes.

3. Pressthe°C/°Fbuttontoselectthedesiredtemperatureunitofmeasure.

D. LightMeasurements

1. UsetheModebuttontosteptotheLightMetermode(Light).Forconvenience,theLCD

displayisorientated180°fromalloftheotherfunctiondisplays.

2. PresstheLux/Ft‐cdbuttontoselectLuxorFootcandleunitsofmeasure.

3. Beforemakingmeasurements‘zero’themeterbyblockingthelightsensor(tocausea

‘nolight’condition)andpressingtheZbutton.Thereadingshouldzero.

4. Tomeasurelight,positionthemetersothatthelightsourceshinesasdirectlyas

possibleonthemeter’slightsensordome.Notethereadingonthedisplay.

E. Airflow(CFM,CMM)Measurements

1. UsetheModebuttontoselecttheAirFlowmode(AirFL).InAirflowmode,themeter

canmeasurethevolumeofairmovingthroughaduct,forexample.Thedisplaywill

showtheCFM(cubicfeetperminute)orCMM(cubicmetersperminute)uniticonon

thebottomofdisplay.UsetheUNITbuttontotoggleCFMandCMMunits.

2. PresstheAreabutton(A)andthenusethe and▲▼buttonstoprogramthearea

value.PresstheREC/Enterbuttontosavetheareavalue.Seethe‘UsefulEquations’

sectionforhelponcalculatingtheareaofaductorotherairway.

3. Forairflowmeasurementstheareaunitsaremeterssquaredorfeetsquared.The

lowerdisplaywillshowm‐2(forCMM)orF‐2(forCFM).

4. Theareasettingrangeis0.001to30.000meterssquaredor0.01to322.92feet

squared.

5. Afterprogrammingthearea,facetheanemometersensorintothewindsourceand

notetheCFMorCMMairvolumereading.

45170CM‐en‐GB_V1.11/15

MIN,MAX,DataRecordingFunction

1. PresstheRecbuttononce.TheRECsymbolwillappearonthedisplay.Thisstartsthe

Min/MaxDataRecordingsession.

2. PressRecagainandtheRECMAXsymbol,alongwiththemaximumvalue,willappearonthe

display.

3. PresstheRecagainandtheRECMINsymbol,alongwiththeminimumvalue,willappearon

thedisplay.

4. Toerase(reset)therecordedMaxorMinvaluespresstheHOLDbuttononce(whileinthe

RecordmodewitheithertheMAXortheMINiconshowing).

5. PressandHoldtheRecbuttonfor2secondstoexittheMin/MaxDataRecordModeandto

returntothenormalmode.RECandMAX/MINiconswilldisappear.

DataHold

PresstheHOLDbuttontofreezethereadinginthedisplay.The'HOLD'iconwillappearonthe

upperright‐handsideofthedisplay.PresstheHOLDbuttonagaintoreturntonormaloperation

(the'HOLD'holdiconwilldisappear).

AutoPowerOFF

Themeterwillautomaticallyturnoffafter10minutesifnokeysarepressedduringthisperiod.

NotethattheAutopowerofffunctionisdisabledintheMax/Minrecordingmode.

BatteryReplacement

WhenthelowbatteryiconappearsorwhenthemeterwillnotswitchONpleasereplacethe

battery.Thebatterycompartmentislocatedonthebackofthemeter,securedbyaPhillipshead

screw.Openthecompartmentandreplacethe9Vbatteryobservingcorrectpolarity.Donot

switchthemeterONuntilthebatterycompartmentissecuredwiththescrew.

Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriate

collectionsites,theretailstorewherethebatterieswerepurchased,orwherever

batteriesaresold.

Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuserisobligatedtotake

end‐of‐lifedevicestoadesignatedcollectionpointforthedisposalofelectricalandelectronic

equipment.

UsefulEquations

Areaequations:



Cubicequations:

CFM(ft3/min)=AirVelocity(ft/min)xArea(ft2)

CMM(m3/min)=AirVelocity(m/sec)xArea(m2)x60

45170CM‐en‐GB_V1.11/15

Specifications

MeasurementSpecifications

MeasurementRangeResolutionAccuracy

MPH(Milesperhour)0.9to67.0MPH0.1MPH

3937ft/min:±3%F.S.

>3937ft/min:±4%F.S

km/hr(kilometersperhour)1.4to108.0km/h0.1km/h

Knots(nauticalmilesperhour)0.8to58.3knots0.1knots

m/sec(meterspersecond)0.4to30.0m/s0.1m/s

ft/min(feetperminute)80to5910ft/min1ft/min

CMM54,000CMM0.001CMM

CFM1,908,400CFM0.001CFM

Temperature/Thermistor0to50oC(32to122oF)0.1oF/C±1.2oC(±2.5oF)

Temperature/Thermocouple‐148to2372°F

‐100to1300°C

0.1°F

0.1°C

±(1%+2°F)

±(1%+1°C)

RelativeHumidity10.0to95.0%0.1%±4%RH(from10%to70%RH)

±4%rdg+1.2%RH(>70%RH)

Light(AutoRanging) 0to2,200Lux1Lux

±5%rdg+8digits

1,800to20,000Lux10Lux

0to204.0Fc0.1Fc

170to1,860Fc1Fc

GeneralSpecifications

DisplayDual,MultifunctionLCDdisplay

SensorsRH:Thinfilmcapacitancehumiditysensor

Temperature:Thermistor(oroptionalexternalTypeKThermocouple)

Airsensor:Lowfrictionvanewheel

Light:Photodiodewithcolorcorrection

Min/Max Min/Maxrecallsthehighest/lowestreading

DataHoldDataHoldfreezesthedisplay

Operatingconditions0to50oC(32to122oF)/<80%RH

Powersupply9VoltBattery

Dimensions/WeightInstrument:156x60x33mm(6.1x2.4x1.3”)

Vane:31mm(1.2”)diameter/160g(5.7oz)



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

www.extech.com

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