V&A VA8070 User manual

ABSOLUTEPRESSURE
METER
UsersManual

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.Introduction
Thankyou forpurchasingthepressuremeasuring
instrument fromus.Pleasetakeafewminutestobrowse
through thisusermanualbeforeyou begintooperatethe
metertoensurethatyou arefullyfamiliarizedwithhow
besttooperatethemeterasaccuratelyandsafelyas
possible.
Thismeterisan absolutepressuremeasuring
instrument. It isnormallyused tomeasureabsolute
pressure,e.g.forpressurecompensation invelocity
measurementinducts,laboratoriesandproduction
processes.Barometricmeasurementsandheight
measurementsbetween twopointsarealsopossible.
1.1Precautionssafetymeasures
Togetthebestservicefromthismeter,pleaseread
thisuser'smanualcarefullyand observethedetailed
safetyprecautionsstrictly.
1.1.1During use
1.Thisproduct isonlyapplicabletomeasurethemajority

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ofnon-corrosivegasesand air-dryingmedium.
2.IftheOLsymbolwill showontheLCD,itmeansthe
readingsisoutsidethemeasuringrange.Pleasekeep
tothepermittedmeasuringrange.
3.Tomeasurethebarometricpressure,theheightabove
meansea levelmustbesetcorrectly.Tomeasurethe
heightbetweentwopoints,theheightabovemean
sealevelatthestarting pointmustbeknownandset
correctly.
4. Neverstoretheproduct togetherwithsolvents,acides
orotheraggressivesubstances.
5.Whenthebatteryvoltageisunderproperoperation
requirement, the symbolwill showon theLCDand
thebatteryneed tobereplaced withnew.
1.1.2Maintaining theproduct
lDonotmeasureatahigh temperature,high
humidityplaces.
lWhennotusing theinstrumentforalong time,

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pleaseremovethebatteryand avoidstoringin
high temperatureand highhumidity.
.Features
1.Display: 6digitsLCDDisplay
2.Parameters(absolute/barometric)
Pa, hPa, mbar, mmH2O,mmHg,inHG, inH2O, psi
3.Resolution: 0.1hPa, 0.1inH2O
4.Range:
300 1,200hPa,
120.4 481.8inH2O
5.Accuracy:
±3.0hPa, ±1.2inH2O
Basicconditions18.0℃~28.0℃,Humidity<80%
6.Samplerate:1time/sec
7.autopoweroff: about 20 minutes
8.lowbatteryindicator
9.Operatingenvironment:
0℃~50 ℃(32℉~122℉)，0~80%RH
10.Storageenvironment:

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-20℃~60℃(-4℉~140℉)，0~80%RH
11. Dimensionand Weight:
121(L)x60(W)x30(H)mm, about 180g
12.Accessories:
DC1.5V (AAA)x3pcs
String x1pcs
Plasticboxx1pcs
Usersmanualx1pcs
.Namesofparts
lInstrumentFamiliarization
1. Sensorcover
2.Absolutepressure
sensornippleconnection
3. LCD display
4. Function key
ON/OFF
Unit Func.Mode
Absolutepressure
meter

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lLCD Display
Themeaning ofthesymbolsrepresentedbythe
followingtable
Numberof
Order Symbol Functions
1
Indicatingit isnowin
thedata-holding
mode
2
Indicatingthedisplay
valuebeingthe
maximum

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value(MAX)
3
Indicatingthedisplay
valuebeingthe
minimumvalue(MIN)
4
measurevalues
5
mmHg
inHg mBa
mmH2O
inH2Ohpa
psi barom
Pressureunits
6
Altitudestate
7 m ft Altitudeunits
8
Indicatingthe
calibrationmode
9
Indication lowpower
ofbatteries.
Batteriesshouldbe
replaced.

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.Operationinstruction
1.Pleaseinstall newbatterieson themeter.
2.Connecttheflexiblehoseofthemeasured objectto
themeter’snippleconnection.
3.Pressthe ON/OFF keytoturnthepoweron.
4.Afterpoweron,press the Unit keytoselectthe
neededunits.
5.Whenthereadinghasbeen stable,read thepressure
value.
*Ifyoustill need moreoperations,pleaseseethe
descriptionofkeysinstruction.
.Keysinstruction
1. ON/OFF key
PressthekeytoturnthepowerONand pressthekey
oncemoretoturnthepowerOFF.
2. Mode key
1) Mode set
PressthekeycanselectthestateofMAX、MIN、

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HOLD.
Thecycleofviewsshowsasfollowing figure:
MeasuremodeHoldmodeMaxmode
Minmode
lHoldmode: Readingareheld.
lMaxmode: Maximumvaluessincetheinstrument
waslast switchedon orlast reset.
lMinmode:Minimumvaluessincetheinstrument
waslast switchedon orlast reset.
2)Autopoweroff set
Whenthemeterispowered on, it isunderautopoweroff
mode.Themeterwill poweritselfoff after20 minutesif
nokeyoperation.
Cancelled autopoweroff function:press Mode key
when poweron until theLCDdisplay APOFF,then
Mode key
Mode key
Mode key
Mode key

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Func. key
Func. key
Func. key>2sec. Func. key
press the ON/OFF keytoconfirmthesetting.
3.Func. key
1) Func. set
Pressthekeycanshiftthemeasurementstate
between pressureand relativealtitude.
2)Altitudestatesetting
Underthestateofmeasuring therelativealtitude,
press the Func. key>2sec.toentertheinitail altitude
setting.Asshowninfollowing figure:
Pressuremeasure
Altitudemeasure
Set initail altitudestate

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Whensetting theinitail altitude,theflashingbitis
thecurrent setting bit:
Mode key —increasethevalueofthecurrentsetting
bit.
Unit key —comfirmthecurrent bitand then turntothe
next.
Func. Key —storethesettingand then returnthe
stateofmeasuringtherelativealtitude.
Whenthelastedbithasbeen comfirmed,itwill
storethesettingautomaticallyandexitthesetting
state.
4.Unit key
1) Unit set
Inpressurestate—changedifferent pressureunits,
adjustalbeunits: mmHg, pa, inHg, mBa, mmH2O,
inH2O, hpa, psi；
Inaltitudestate—changealtitudeunitsofmeteror
feet.
2)Backlight contrl

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Ifpress thekey>2sec. thebacklight willbeturned on,
Pressthekeyonce>2sec.thelightwill beturned off.If
thebacklight isnot closed within60 seconds, itwillbe
turned offautomatically.
. Maintenance
1. CLEANINGINSTRUCTIONS
Themetermaybewipeddownwithawetspongeor
clothusing amildwaterbased detergentor
anti-bacterialsoap and rinsed underagentlestream
ofcoldwater.
NOTE:
Thisunitisnotdesigned forcompletesubmersion or
washinginwater.
2. BATTERYREPLACEMENT
Usethefollowing procedure:
Whenthebatteryvoltagedropbelowproperoperation
rangethe symbolwill appearontheLCD display

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and thebatteryneed tobereplaced.
*Press thebatterycoverand towardsarrowhead
directiontoopen thebatterycover.
*Replacethebatterywiththreenew1.5Vbatteries
(AAA).
*Replacethebatterycover.

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WLS2112