Hanna Instruments HI 93530 - Manual (Page 7)

13 12
Note: When the reading goes over-range or the probe is removed,
the Hi and Lo values display dashes until cleared.
CLEAR FUNCTION (not for HI 93530 and HI 93530N)
Upon pressing the CLR key, the High/Low values may be cleared at
any time during measurement and the current reading is assigned to
the highest and lowest temperature values for the displayed channel
only.
°C/°F SELECTION
Measurements can be displayed in either
degrees Celsius or Fahrenheit. The meter is
factory set to °C scale; to change the scale,
press the °C/°F key,
or set the °C/°F switch located in the battery compartment (HI 93532
and HI 93532N only, see figure on page 12).
AUTO SHUT-OFF
To save battery life, these meters are provided with an auto-off
feature, which switches the instrument off after 60 minutes of nonuse.
To disable this feature, all models (except HI 93531R & HI 93532R)
are provided with an internal switch located in the battery compart-
ment (see figure on page 14).
HI 93531R and HI 93532R allow the user to disable the auto-off
feature through the front keyboard; press (ALT+) AOFF to enter the
mode, then set the desired option (auto-off after 8 or 60 minutes, or
disabled) with the ALT key; release all buttons, wait a few seconds
and the meter will return to normal measurement mode.
OPERATIONAL GUIDE
To switch the instrument ON, press the ON/OFF key.
The thermometer will carry out a self diagnostic test routine, the LCD
will show all segments for a few seconds (or as long as ON/OFF is
held), followed by the percentage indication of the remaining battery
life.
The thermometer then enters normal measurement mode.
If a temperature probe is plugged in, the meter displays the
measured temperature.
If no probe is plugged in, or if reading is
over-range, the display shows flashing dashes.
If a measurement is slightly over the range
of the meter specifications, the display flashes
the closest full-scale value.
To switch the meter OFF, press the ON/OFF key.
Note: The meters are provided with an acoustic signal feature activated
when buttons are pressed, which can be disabled using a switch
located in the battery compartment (see figure on page 12).
HOLD FUNCTION
The HOLD function is activated by pressing 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 values (not for HI 93530 and
HI 93530N).
HIGH/LOW TEMPERATURES
(not for HI 93530 and HI 93530N)
The maximum and minimum temperatures
are continuously monitored and displayed
on the lower portion of the LCD.