Amprobe AM-220 Digital-Multimeters - Manual (Page 13)

9
TEMPERATURE MEASUREMENT (AM-240 Only)
1) Set the selector switch to desired “°F/ °C” position.
2) Press “SELECT” key to choose °F or °C measurement.
3) There is an internal PN Junction Diode Sensor which measures ambient temperature
with no probe connected. This is the 0~40° in the spec.
4) Connect the probe included, or any K-type thermocouple, by inserting the “+” plug
in the “VW mA” socket & the “-“ in the “COM” socket
5) Put the sensor probe into the temperature field under measurement.
DATA HOLD AND BACK LIGHT
On any range, press the “
” key to lock display value, and the
“ ” sign will appear on the display, press it again to exit. On any range, press the
“ ” key for more than 2 seconds to light the back light, press it again for
more than 2 seconds to wink the light.
MAX/MIN HOLD
Press the “MAX/MIN” key to lock MAX or MIN value, and the “MAX” or “MIN” sign will
appear on the display, press it for more than 2 seconds to exit.
RELATIVE MEASUREMENT
Press the “REL
” key, you can measure the relative value and “ ” sign will appear
on the display, the auto range mode be changed to manual range mode. Press it again
to exit relative measurement and “
” sign disappears, but you cannot go back to auto
range mode. This function is non effective on Hz% measurement.
AUTO/MANUAL RANGE
The auto range mode is a convenient function, but it might be faster to manually set the
range when you measure values that you know to be within a certain range. To select
manual range, repeatedly press “RANGE” key until the display shows the desired range.
The range steps upward as you press “RANGE” key. The meter will go back to auto range
mode when you press “RANGE” key for more than 2 seconds. It can not select manual
range mode on Hz%, capacitance and temperature range.
Caution: while using the manual range mode, if “OL” sign appears on the display,
immediately set range to a higher.