Hanna Instruments HI 935002, Инструкция по эксплуатации, Страница: 5 / 9

9 8
HI935009 HI935005 / 5005N
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 Fahrenheit.
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 (
HI935002 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 HOLD mode.
Note : Although the display is frozen, internally the meter continues
measuring and updating Hi/Lo and relative values.
In HI935009 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 temperatures
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 (HI935005 and HI935009)
To save battery life, the HI935005 and HI935009 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
HI935005 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.