AEMC CA846 User manual

THERMO-HYGROMETER
TERMO-HIGRÓMETRO
E N G L I S H User Manual
E S PA Ñ O L Manual de Instrucciones
CA846
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Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
certifies that this instrument has been calibrated
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be
requested at the time of purchase, or obtained
by returning the instrument to our repair and
calibration facility, for a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair
and calibration section at www.aemc.com.
Serial #: ________________________________
Catalog #: 2121.24
Model #: CA846
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com
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Thermo-Hygrometer Model CA846 1
Table of Contents
ENGLISH.................................................................................................1
ESPAÑOL..............................................................................................13
1. INTRODUCTION............................................................................... 2
1.1 International Electrical Symbols................................................2
1.2DenitionofMeasurementCategories .....................................3
1.3ReceivingYourShipment..........................................................3
1.4OrderingInformation.................................................................3
2. PRODUCT FEATURES ...................................................................... 4
2.1Description................................................................................4
2.2PushButtons ............................................................................5
2.2.1Center(Yellow)FunctionSwitch...................................5
2.2.2Back-Lightand°C/°FButton ...................................5
2.2.3MAXButton...................................................................5
2.2.4HOLDButton ................................................................5
3. SPECIFICATIONS............................................................................. 6
3.1EnvironmentalSpecications....................................................6
3.2MechanicalSpecications ........................................................7
3.3SafetySpecications ................................................................7
4. OPERATION .................................................................................... 8
4.1 Recommendations....................................................................8
4.2OperatingtheModelCA846 .....................................................8
5. MAINTENANCE ............................................................................... 9
5.1ReplacingtheBattery ...............................................................9
5.2 Cleaning....................................................................................9
RepairandCalibration...........................................................................10
Technical and Sales Assistance ............................................................10
Limited Warranty ...................................................................................11
WarrantyRepairs...................................................................................11
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2 Thermo-Hygrometer Model CA846
CHAPTER 1
INTRODUCTION
Warning
• Donotconnectto,ortouch,anyelectricalcircuitwiththe
Thermo-Hygrometer.
• Toavoidinjuryorrehazard,donotoperatethisproductinan
explosiveatmosphereorenvironment.
• Remove(unscrew)theprotectivemetaltubecoveringthe
sensorheadwhenusingtheThermo-Hygrometer.
• DonotimmersetheThermo-Hygrometersensorheadintoliq-
uids-thismaycausepermanentdamagetothesensors.
• Screwontheprotectivemetaltubecoveringthesensorhead
whennotusingtheThermo-Hygrometer.
1.1 International Electrical Symbols
This symbol signifies that the instrument is protected by double or reinforced
insulation.
This symbol on the instrument indicates a WARNING and that the operator must refer
to the user manual for instructions before operating the instrument. In this manual,
the symbol preceding instructions indicates that if the instructions are not followed,
bodily injury, installation/sample and product damage may result.
Risk of electric shock. The voltage at the parts marked with this symbol may be
dangerous.
This symbol refers to a type A current sensor. This symbol signifies that application
around and removal from HAZARDOUS LIVE conductors is permitted.
In conformity with WEEE 2002/96/EC
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Thermo-Hygrometer Model CA846 3
1.2 Definition of Measurement Categories
Cat. II: Formeasurementsperformedoncircuitsdirectlyconnectedto
theelectricaldistributionsystem.Examplesaremeasurements
onhouseholdappliancesorportabletools.
Cat. III:Formeasurementsperformedinthebuildinginstallationat
thedistributionlevelsuchasonhardwiredequipmentin xed
installationandcircuitbreakers.
Cat. IV: Formeasurementsperformedattheprimaryelectricalsupply
(<1000V)suchasonprimaryovercurrentprotectiondevices,
ripplecontrolunits,ormeters.
1.3 Receiving Your Shipment
Uponreceivingyourshipment,makesurethatthecontentsareconsis-
tentwiththepackinglist.Notifyyourdistributorofanymissingitems.If
theequipmentappearstobedamaged,leaclaimimmediatelywiththe
carrierandnotifyyourdistributoratonce,givingadetaileddescriptionof
anydamage.Savethedamagedpackingcontainertosubstantiateyour
claim.
1.4 Ordering Information
Thermo-Hygrometer Model CA846 ..................................Cat. #2121.24
Includes meter, shockproof holster, 9V battery and user manual.
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4 Thermo-Hygrometer Model CA846
CHAPTER 2
PRODUCT FEATURES
2.1 Description
TheThermo-HygrometerModelCA846isaportable,compactdigitalmeter
designedforsimplicityandone-handoperation. ThemeterusesanNTC
asthetemperaturesensorprovidingexcellentresponsetimetochanges
intemperature,goodrepeatabilityandaccuratereadings.
TheModelCA846alsoutilizesa thin-lmpolymer-capacitivetyperelative
humiditysensorashygrometersensor,offeringexcellentrecoveryfrom
100%moistureandfastresponsetimeanddurability.
1. Temperature/humiditysensor
withprotectivesensorcover
2. 3½digitdisplay
3. MAXbutton
4. °C/°Fselector&backlight
5. HOLDbutton
6. Power/mode selector
1
2
3 5
6
4
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Thermo-Hygrometer Model CA846 5
2.2 Push Buttons
2.2.1 Center (Yellow) Function Switch
TurnsONtheThermo-Hygrometerandselectsthe%RHor°C/°Fsetting.
SlidethebuttontoOFFafteruse.
2.2.2 Back-Light and °C/°F Button
• PressthebuttontoturntheBack-LightON.
• Pressthebuttonagainto turntheBack-LightOFF.
• Pressthebuttonfor2secondstochangethetemperaturescaleto
°Cor°F.Thetemperaturescale°Cor°Fisdisplayedinthelowerright
handcornerofthedisplay.
2.2.3 MAX Button
• Pressthe MAXbuttontoentertheMAXmode.The“MAX”annunciator
appearsintheupperrighthandcornerofthedisplay.
• Theselectedrange(%RHor°C/°F)recordsandupdatesthemaximum
absolutevalues.
• PresstheMAXbuttonagaintoexittheMAX-recordingmode(“MAX”
goesout).
• TheHOLDbuttonmaybeusedintheMAXmodeto“Freeze”(nolonger
updates)theMAXmeasurementonthedisplay.
2.2.4 HOLD Button
TheHoldbutton“freezes”thereadingonthedisplay.Pressthe“HOLD”
buttontotoggle(activate/release)HOLD.IntheHOLDmode,the“HOLD”
annunciatorisdisplayedintheupperpartoftheLCDdisplayandthelast
readingisdisplayeduntilreleased.
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6 Thermo-Hygrometer Model CA846
CHAPTER 3
SPECIFICATIONS
3.1 Environmental Specifications
Temperature Scale:Celsius(°C)orFahrenheit(°F)user-selectable
Temperature Sensor: NTC
Measurement Range:-4°to140°F,-20°to60°C
Resolution: 0.1°F/°C
Accuracy: -4° to 32°F ± 2°F (-20° to 0°C ± 1°C)
32° to 140°F ± 1°F (0° to 60°C ± 0.5°C)
Temperature Coefcient:0.1timestheapplicableaccuracyspecication
per°Cfrom0°to18°Cand28°to50°C(32°to64°Fand82°to122°F)
Humidity Sensor:Electroniccapacitancepolymerlmsensor.
(Thesensorisunaffectedby watercondensation,andisimmunetomost
reagentvapors)
Measurement Range: 0% to 100% RH
Resolution: 0.1% RH
Accuracy (@ 25°C): 10%-90% RH ± 5.0%
0%-10% RH; 90% to 100% RH ± 10.0%
Sensor Response Time for 90% of Range:60stypical
Sensor Stability:±2%RH,2yearstypical
Sensor Hysterisis (10% to 90% to 10% RH):±1%RHtypical
Sensor Temperature Dependence:
Negligiblefrom32°to140°F(0°to60°C)
Operating Temperature:
32° to 122°F (0°C to 50°C) at < 80% RH
Storage Temperature:
-4°to140°F(-20°to60°C),0to80%RHwithbatteryremoved
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Thermo-Hygrometer Model CA846 7
Accuracy:
Statedaccuracyat23°C±5°C,<90%RH
Altitude: 2000m max
3.2 Mechanical Specifications
Display:
3½digitliquidcrystaldisplay(LCD)withmaximumreadingof1999
Over-Range:“OL”isdisplayed
Low Battery Indication: The isdisplayedwhenthebatteryvoltage
dropsbelowtherequiredlevel
Sample Rate: 2.5timespersecond,nominal
Input Protection:
24VDCor24Vrmsmaximuminputvoltageonanyinput
Power Supply:
Standard9Vbattery(NEDA1604,IEC6F22006P,orequivalent)
Battery Life:
200hourstypicalwithcarbonzincbattery
Dimensions:
6.81 x 2.38 x 1.5" (173 x 60.5 x 38mm)
Weight:
Approx7oz(197g)includingbattery
3.3 Safety Specifications
EN61010-1(1995-A2),ProtectionClassIII
OvervoltageCategory(CATIII,24V),PollutionDegree2
Indoor Use
*All specications are subject to change without notice
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8 Thermo-Hygrometer Model CA846
CHAPTER 4
OPERATION
4.1 Recommendations
• Forreliablemeasurements,letthereadingsstabilize.Thehygrometer
andtemperaturesensormustreachequilibriumwiththemediummea-
sured.
• Avoidtemperaturemeasurementerrorsinducedbytooshortmea-
surementtime,sunshineduringthemeasurement,heating,coldouter
walls,airdraft(e.g.fans),radiatingsourcesincludinghandand/orbody
heat,etc.
• Avoidhumiditymeasurementerrorsinducedbysteam,watersplashes,
drippingwaterorcondensationonthesensor,etc.
• Avoidsensorcontaminationinducedbyparticlesintheairormeasure-
mentsinpowderlikesubstances.Contaminationmaybeavoidedby
measuringthroughalter(usersupplied).Theltermustbecleaned
orreplacedperiodically,dependinguponthedegreeofcontamination
atthemeasurementsite.
4.2 Operating the Model CA846
1. Unscrewtheprotectivemetaltubecoveringthesensor.
2. Setthepowerswitchtothedesired%RHor°C/°Frange.
3. Letthereading(s)stabilize(%RHtakesatleast60secondstoreach
90%).
4. Readthedisplay.
5. Afteruse,screwtheprotectivemetaltubebackontothesensor.
6. TurntheinstrumentOFFwhennished.
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