Hanna Instruments HI 935002 - Manual (Page 5)

9 8
HOLD mode.
Note: Although the display is frozen, internally the meter continues
measuring and updating Hi/Lo and relative values.
In HI 935009 only, the held value is also stored in non-volatile
memory and can be recalled by pressing (ALT+) MR key. 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 during measurement and the current reading is assigned to
the highest and lowest temperature values for the displayed channel
only.
AUTO SHUT-OFF (HI 935005 and HI 935009)
To save battery life, the HI 935005 and HI 935009 models are
provided with an auto-off feature, which switches the instrument off
after a certain period of nonuse.
The delay time can be changed by the user (8 minutes, 60 minutes,
or disabled).
To access this feature, the HI 935005 is provided with an internal
button located in the battery compartment (see figure on page 10).
Unscrew the 4 screws on the back of the meter and select the desired
auto-off time period by pressing the button and viewing the value on
the LCD. Re-attach the back making sure that the gasket is in place
and tighten the 4 screws to ensure a watertight seal.
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 the reading is
over-range, the display shows flashing dashes.
If a measurement is slightly over the range
of the meter specifications, the display will
flash the closest full-scale value.
To switch the meter OFF, press the ON/OFF key.
°C/°F SELECTION
Measurements can be displayed in either degrees Celsius or Fahren-
heit. The meter is factory set to °C scale; to change the scale, press
°C/°F key or (ALT+) °C/°F keys,
or set the switch located in the battery compartment (HI 935002 only,
see figure on page 10).
HOLD and MR FUNCTIONS
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
HI 935009 HI 935005 / 5005N