Hanna Instruments HI 93530 - Manual (Page 8)

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DISP FUNCTION (HI 93531R and HI 93532R)
These models are also provided with the DISP function, which allows
the user to select the information to be displayed.
• While in T1 (or T2, HI 93532R only), pressing DISP switches the
display between normal, relative and average measurement modes.
In the normal mode, the main body of the LCD shows the current
temperature while the lower portion displays the Hi/Lo limits for
that channel.
When the meter enters relative mode, the "REL" tag lights up
and the current temperature for that channel is set as the
reference temperature. Pressing CLR will also set the reference to
the current temperature.
In relative mode, the main body of the LCD shows the difference
from the reference temperature. The lower portion displays the
current temperature for the selected channel.
When average mode is entered, the "AVG" tag lights up and the
current value is set as the new beginning value. The average can
be reset by pressing CLR while in the average mode.
In average mode, the main body of the LCD shows the average
temperature, while the lower portion displays the current tem-
perature for the selected channel.
The average mode will calculate the average for a period of up to
24 hours. If a different mode is selected for that channel, the
average will no longer calculate and the value will be lost.
At the end of the 24 hour period, the "AVG" tag will blink to
indicate that sampling has stopped, and the displayed value is
the last average calculated.
If a probe is removed or over-range is reached while in average
mode, the display shows flashing dashes and blinking "AVG" tag.
BACKLIGHT FEATURE
(not for HI 93530, HI 93531 and HI 93532)
The backlight feature can be easily activated through the keyboard
by pressing the BL (or ALT+BL) key.
Note: The backlight automatically shuts off after approximately 1
minute with no buttons pressed.
BATTERY COMPARTMENT
See "Battery replacement" section for back cover removal/installation.
2-CHANNEL MODELS (HI 93532, HI 93532N & HI 93532R)
HI 93532, HI 93532N and HI 93532R models can monitor two
samples through two independent temperature channels (probes).
The display will show the actual, Hi and Lo values of the selected
channel (T1, T2 or T1-T2). The corresponding tags will light up to
inform the user.
To select the desired channel, use the T1/T2 key.