REED 8778 User manual

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Model 8778
Heat Stress
Meter
Instruction
Manual
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Table of Contents
Features......................................................................................... 3
Specications.............................................................................3-4
Instrument Description .................................................................. 4
Operating Instructions................................................................5-9
Select display mode.................................................................... 5
IN/OUT switch ............................................................................ 5
Select Unit .................................................................................. 5
Alarm Setting .............................................................................. 6
Auto Power Off (Sleep Function) ................................................. 6
Calibration ...............................................................................7-8
Troubleshooting .......................................................................8-9
RS232 Interface .......................................................................... 9
Battery Replacement..................................................................... 9
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Features
• WetBulbGlobeTemperature(WBGT)considerstheeffectsoftempera-
ture,humidityanddirectorradiantsunlight
• HeatStressIndexmeasureshowhotitfeelswhenhumidityiscombined
withtemperature,airmovementandradiantheat
• BlackGlobeTemperature(TG)monitorstheeffectsofdirectsolarradia-
tiononanexposedsurface
• In/OutfunctiondisplaystheWBGTvaluewithorwithoutdirectsun
exposure
• Viewindividualtemperaturesorindicesineither°For°C
• UseradjustableWBGTthresholdwithaudiblealarmifthresholdis
exceeded
• Autopoweroffwithoverride
• Built-inRS232andUSBinterface
• Tripodmountdesignforlong-termmonitoring
Specifications
AirTemp.Range: 0.0to50.0°C(32to122°F)
Accuracy: ±0.6°C(±1.1°F)
BlackGlobeTemp.Range:
 0.0to80.0°C(32to176°F)
Accuracy: ±1°C:15to40°C,±1.5°C:restofrangeforindoor;
 ±1.5°C:15to40°C,±2°C:restofrangeforoutdoor
WBGTTemp.Range: 0.0to50.0°C(32to122°F)
Resolution: 0.1°C(0.1°F)
HumidityRange: 0to100%RH
Accuracy: ±3%RH:10to90%RH,±5%RH:restofrange
Resolution: 0.1%RH
OperatingConditions: 0to50°C,0-95%RH
StorageConditions: -20to65°C,0-95%RH continued ...
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
PowerSupply: 2xAAAbatteries(included)
PowerConsumption: 1000hours(Alkaline),250hours(Generalpurpose)
Dimensions: 10x1.9x1.1”(254x49x30mm)
BlackBallDimensions:2.95x2.95”(75x75mm)
OptionalAccessories: Tripod(ModelBS-6)
 33%HumidityCalibrationStandard(ModelHR33)
 75%HumidityCalibrationStandard(ModelHR75)
 USBCable&Software(ModelVZUSBAZM)
Instrument Description
LCD Display
WBGT WetBulbGlobeTemperature
TG BlackGlobeTemperature
TA AirTemperature
% RelativeHumidity
C/F Celsius/Fahrenheit
IN Indoor(noSun)
OUT Outdoor(fullSun)
 Lowbatteryindicator
DP/RES1888 Unusediconsinthesemodels
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Operating Instructions
Pressthe buttontoturnthemeterONorOFF.
AllindicatorsontheLCDscreenwillashwhenyoupoweron.
Slidedownthesensor-protectingsheathbeforetakingameasurement.
Select display mode
ThemetermeasuresTA(AirTemp),TG(GlobeTemp),RH(Relative
Humidity),andcalculatesWBGT.Pressthe buttontoselectthemea-
suringmode.AniconwillappearonthetopoftheLCDscreentoindicate
thecurrentoperationmode(seeFig.A).
IN/OUT switch
TomeasureWBGTwithorwithoutdirectSunexposure,holddownthe
formorethan1secondtoswitch.EitherINorOUTwillthenbedisplayed
ontheLCDscreenindicatingweathertheunitissetforIndoor(noSun)or
Outdoor(fullSun)measuring.
Select Unit
Pressthe and buttonssimultaneouslyinmeasuringmodetoselect
°Cor°F.
Fig. A
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Alarm Setting
Thismeterfeaturesanaudiblealarmtogivewarningforpossibleheat
stressintheenvironment.WhenWBGTvaluereachesthealarmthreshold,
thevaluestartstoblinkandthereisacontinuousbeep.Thealarmstops
whenthemeasuredvaluefallsbelowthethresholdorthemeteristurned
off.Thealarmthresholdisadjustablefordifferentapplications.Whenthe
meterisOFF,holddownthe buttonfor2secondstoturnonthemeter
andenterthealarmsetting.Thecurrentsettingwillbedisplayedwitha
blinkingdigit.Pressthe buttontoincrementthevalueandthe but-
tonfor2secondstoreturntomeasuringmode.Thesettingrangeis20.0
–37.2°C(68-99.0°F).OUTwilldisplayontheLCDscreenifthesettingis
outofrange(seeFig.B).
Auto Power Off (Sleep Function)
ThemeterwillautomaticallypoweritselfOFFafter20minutesofinactivity.
Tooverridethisfunction,whenthemeterisoff,holddownthe and
buttonsfor2seconds.When“n”appearsintheLCDscreen,themeter
isnowinNon-Sleepmode.Whenthemeteristurnedoff,thedefaultwill
revertbacktothedefault(seeFig.C)
Fig. B
Fig. C
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Calibration
Thismetercanbecalibratedonthehumiditybyenduserswiththe
optional33%and75%saltsolution.Themambientconditionisrecom-
mendedtobeat23+/-2°Candastablehumidity.Userscanterminatethe
calibrationatanytimebypressingthe button.
33% Calibration
Besurethemeteristurnedoff.Unscrewtheblackglobewiththesensor
sheath(seeFig.1).
Plugthesensorprobeintotheoptional33%HumidityCalibration
Standard(ModelHR33)(seeFig.2).Holddownthe , andthe
buttonsfor2secondsuntilblinking“3X.X%”appearsontheLCDscreen.
Themeterisnowcalibratingandwillnishinapproximately60minutes.
Whenthevaluestopsblinking,themeterisdonecalibrating.
75% Calibration
Afterthe33%calibration,plugthesensorprobeintotheoptional75%
HumidityCalibrationStandard(ModelHR75)(seeFig.2).Pressthe
buttontobeginthecalibration,andablinking“7X.X%”willappearonthe
LCDscreen.Themeterisnowcalibratingandwillnishinapproximately
60minutes.Whenthevaluestopsblinking,themeterisdonecalibrating
andwillreturntomeasuringmode.
Fig. 1
Fig. 2
continued ...
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Reassembly
Reassembletheglobewithcautionbyttingthepin(seeFig.3)intothe
connection(seeFig.4).Ithelpstopositionbytargetingthescrewholeson
thesheathandthemeter(seeFig.5).Incorrectinstallationmaydamage
thesensor.
Note:TheRHvaluedifferencebetweenthemeterdisplayandcalibration
standardshouldbewithin+/-0.3%otherwisethecalibrationhasfailed.
Troubleshooting
Power on but no display
Checkthatthebatteriesareinproperlyandinthecorrectpolarity.Take
thebatteriesoutforoneminute,reinstallandretry.
Calibration failure
Checkthebatteryvoltageorreplacethemwithnewbatteries.Check
weatherthesenoriswellpluggedintothesaltbottleandnoaircomesin.
Checkambientcondition.
Fig. 3
Fig. 4
Fig. 5
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Error message on the display
E2: Thevalueisunderrange/Impropersensorinstallation
E3: Thevalueisoverrange
E4: Thevalueisinerrorbecauseoftheoriginaldata/
Improper sensor installation
E11: RHcalibratorerror,dothecalibrationagain
E32/E33:Circuiterror,contactREEDInstrumentsforrepair
or replacement
RS232 Interface
ThismetercandoPClinkforon-linelogginganddataanalysisviaRS232
interfaceandsoftware.Theprotocolisasfollows:
A. 9600bps,8databids,noparity.
B. Format(TransmittingASCIIcodeeverysecondwhilemeterison
 Wxxx.xC(F):Txxx.xC(F):Txxx.xC(F):Hxx.x%LRCCRLF
Note:the1stvalueisWBGT,the2ndTA,the3rdTG,andthe4thisRH
Battery Replacement
The symbolwillappearonthebottomleftoftheLCDscreenwhenthe
batterypowerislow.Ifthebatteriesarenotreplacedtheaccuracyofthe
readingwillbeaffected.
1. Openthebatterycoveratthebackofthemeterandremovethe
batteries.
2. Insert2newAAAbatteriesandmakesurethebatteriesareinthe
correct polarity.
3. Reinstallthecover.
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
INSTRUMENTS
Notes _________________________________________
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