Manual

DT15A/DT20A
Instruction Manual
INTRODUCTION
Forward
Congratulations on your purchase of this thermometer by UEi!
This instrument is a portable, battery operated temperature-
measuring device. It uses thermister probes to provide fast,
accurate measurements with excellent resolution.
Materials Supplied
This package contains:
• TheDT15AorDT20Atemperaturetester
• Animpactresistantrubberboot
• ATT55Athermistorprobe(twoprobesincludedwithDT20A)
• Installedbatteries
• Thisinstructionmanual
SAFETY
Practicing Safety
This instrument is designed for professionals who know the
hazards associated with their trade. While the opportunity to
injure yourself as a direct result of operating this instrument is
nearly non-existent, the equipment you are servicing, as well as
the environment you’re
working in, can be hazardous. These are a few common safety
practices for those working around temperature critical
environments:
• Followthemanufacturer’smaintenanceprocedureswhen
servicing equipment
• PlaceONLYthermistorprobesinthejacks
• Besuretheprobeyouareusingcanwithstandthetempera-
ture extreme it may be exposed to in your service task
• Properlymaintainyourthermometerandcalibrateitregularly
CONTROLS AND INDICATORS
Key:
1. PowerSwitch-Powersinstrumentonandoff
2. Min/Max–Displaysthecapturedminimumandmaximum
values for all parameters.
3. BackLightSwitch-Powersbacklightonandoff
4. HoldSwitch-Freezesscreendata
5. °F/°CModeSelectSwitch-Togglesdisplaydatafrom
 degreesCelsiustodegreesFahrenheit.
6. T1-T2Switch(DT20Aonly)-Togglesscreeninformation
 betweenT,T2,andT1-T2.
7. ThermistorPorts–1/8”minijackplugsforthethermistor
 probesused;T1ontheleftT2ontherightforDT20A
8. LCDDisplay–Displayscreenoffunctionand
data information
9. SecondDisplay(DT20Aonly)–DisplayofT2orT1-T2data
OPERATING INSTRUCTIONS
Functional Description
ThemeterwillmomentarilyflashallLCDsegmentsonthe
display when it is first turned on, emit four quick beeps then
it will go blank for approximately 3 seconds before starting
operation. The instrument will only provide information with
probes plugged in.
TheDT15Ahasasinglescreenofinformationtoviewthe
temperaturein°For°C,recordedminimumormaximum,or
held value.
TheDT20AhasasplitscreentoviewbothT1andT2,or
T1-T2andyourchoiceofeitherT1orT2.Thechoicesfor
formatarethesameaswiththeDT15A.Numerousviewing
combinations are available to ensure you get the information
you need.
• Min/Maxfunctionstartswhenthemeterispoweredon,
and continues to capture values while operating with
probes connected
• TemperaturereadingsareeasilytoggledbetweenFahren-
heit and Celsius
• ThebacklightilluminatestheLCDforviewinginlowlight
areas
• TheHOLDbuttonwillfreezethedisplaydataandsuspend
theMin/Maxfunction
• Thedisplaywillbegintoblinkwhenbatteryvoltageislow.
Note:Ifnoprobesarepluggedin,threedasheswillappearin
the temperature data screens. This will also be recorded as a
Maxuntilthepowerisswitchedoffthenbackon.
This instrument operates and updates silently.
Auto Power Off
Thisinstrumentwillshutoffautomaticallyinapproximately60
minutes.Forrecordingoroperatingoverlongerperiodsof
time you can defeat the auto power off function by holding
down the hold button while turning the unit on. The unit will
start with one solid beep to indicate that auto power off func-
tion is not activated.
Mode Options
Whentheinstrumentisinitiallyturnedon,thePrimaryscreen
displaysT1andtheSecondaryscreendisplaysT2(DT20A).
The following table lists the modes of operation that can be
invoked by pressing the buttons indicated. The table assumes
your instrument has been powered on with temperature
probe(s)installed:
— Continued on reverse —
DT15A/DT20A Controls
DT20Ashown.DT15AdoesnothavedualdisplayorT1-T2button.
DT15A/DT20AMAN9/01
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