M a i n t e n a n c e
Periodic Service
WARNING!
Repair and service of this instrument is to be performed by qualified
personnel only. Improper repair or service could result in physical
degradation of the meter. This could alter the protection this meter
provides to the operator. Perform only those maintenance tasks that
you are qualified to do.
Cleaning
Periodically clean your meter’s case using a damp cloth.
DO NOT
use
abrasive, flammable liquids, cleaning solvents, or strong detergents as
they may damage the finish, impair safety, or affect the reliability of the
structural components.
Do not allow moisture to directly contact the temperature probe jacks,
or enter the instrument’s housing. Remove the instrument from its boot
to ensure moisture is not trapped during cleaning.
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 the 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
Fahrenheit 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 function 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:
DT15A/DT20A-MAN
P. 2
Button
ON/OFF
MIN/MAX
Back Light
Hold
˚F/˚C
T1-T2
Response/Display
Turns instrument on (default setting) and off.
Three beeps emitted at power up.
Press once and the display indicates MIN.
You are now able to change scales to display minimum
in degrees ˚F or ˚C, and on the DT20A you are able to
cycle through T1-T2 options.
Press a second time to display MAX - You have the
same display.
Press again to return to real time readings.
Press momentarily to activate or turn off the backlight.
Press momentarily to hold all readings. This also stops
the recording of MIN/MAX values. Hold down while
turning unit on to disable auto power off. Confirmed
with one solid tone.
Press momentarily and the unit toggles between
Fahrenheit (the default) and Celsius temperatures. The
current mode is indicated on the right side of the LCD.
(DT20A only) Press momentarily to display T1-T2 on
the lower display with T1 on the upper display.
Press again to display T1-T2 on the lower display with
T2 on the upper display.
Pressing a third time will return the display to T1 on the
upper display and T2 on the lower display.
