11
HOLD and MR FUNCTIONS
The HOLD function is activated by press-
ing the HOLD key.
The measured temperature is held on the
display until HOLD is pressed again. The
"HOLD" tag blinks on the display while in
HOLD mode.
Note
: Although the display is frozen, internally the meter continues
measuring and updating Hi/Lo, relative and average values.
In
HI93551R
,
HI93552
and
HI93552R
, the held value is also stored
in non-volatile memory and can be recalled by pressing (ALT+) MR
keys. While the MR key is held, the "HOLD" tag lights up and the
meter displays the stored value; when the MR key is released, after 1
second the meter returns to normal measurement mode.
HIGH/LOW TEMPERATURES
The maximum and minimum tempera-
tures are continuously monitored and
displayed on the lower portion of the LCD.
Note
: When the reading goes over-range or the probe is removed,
the Hi and Lo values display dashes until cleared.
CLEAR FUNCTION
Upon pressing the CLR key, the High/Low
values may be cleared at any time dur-
ing measurement and the current reading
is assigned to the highest and lowest
temperature values for the displayed chan-
nel only.
In
HI93551R, HI93542
,
HI93552
and
HI93552R
models, pressing
CLR also resets relative and average values.
AUTO SHUT-OFF
To save battery life, the meters are provided with an auto-off feature,
which switches the meter off after 60 minutes of nonuse.
In
HI93551
,
HI93551N
and
HI93542
models, to disable this feature
set the internal slide-switch located in the battery compartment (see
figure on page 10).
