Amprobe TMD90A, User Manual

Page: 14 / 81

9
Problem Solution
Relative clock does not start
when you push the
E
button.
•
Verify that the
thermocouple is inserted
correctly.
Dashes appear during a review
of the maximum recorded
value.
•
Thermocouple is not
acknowledged. Check for
intermittent or momentary
thermocouple removal.
Data continues to update after
you press the
A button.
•
Check for HOLD icon on
the display. Press
A
button firmly.
Instrument turns off while
recording.
•
Press D and A
simultaneously before
power on to disable the
Auto power off feature.
Replacing the Battery
Replace the 9 V battery when:
•
BAT appears on the right side of the display.
•
The meter will not turn on.
•
BAT appears when you turn on the backlight.
Even if the battery was recently replaced, check the voltage level if there
is no response from the meter.
To replace the battery
1. Remove all thermocouples from the top of the meter.
2. Lay the instrument face down on a clean, flat surface.
3. Loosen the screw and remove the battery door.
4.
Replace the battery.
5. Replace the battery door and tighten the screw.
Remove the battery if you do not plan to use the meter for a month or
more. Do not leave the battery in a meter that may be exposed to
temperature extremes.
9 V ac Adapter
For long term measurement recording, a 9 V AC adapter can be used in
place of the battery. This can be purchased at any electronics store
using these specs: Miniature power plug with inner conductor positive
and outer conductor negative, 500 mA current rating. The 9 V battery
can be left in the TMD90A when using the AC adapter.
TMD90A_all.pdf 13 3/23/2007 3:22:49 PM