3
Battery voltage drop below 7 V is indicated with blinking of "BAT" in default display mode
(displaying of actual values) and FAST mode is automatically canceled to save the battery. At the
same time audio indication of alarms is automatically switched OFF.
If instrument is powered from external ac/dc adapter, internal 9V battery is replaced with
rechargeable NiCd accumulator. In usual operation from adapter accumulator is charged only with
small current. If accumulator is totally discharged, its full charging in instrument takes
approximately 100 hours. Instrument with accumulator is not recommended for permanent
operation without ac/dc adapter plugged. Accumulator works only as a standby source in case of
power mains failure.
Switching ON and OFF the instrument
Switch ON the instrument by pressing ON/OFF key. After switching ON
the instrument all symbols on the LCD are displayed. If the ON/OFF key is
being held pressed, all LCD symbols are displayed till the key is released.
In usual operation instrument then starts the measurement mode and actual
measured values are displayed.
Displaying of actual measured values
In this mode is instrument anytime after switching ON. It is possible to enter this mode from
other modes by pressing or by repeating pressing of MENU key.
Temperature in °C is displayed on the upper LCD line and relative
humidity in %RH is displayed on the lower LCD line.
Press DISPLAY key to display other readings - temperature in °C on upper
line and dew point temperature on lower line (°C DP).
Function HOLD (storing of actual measured values) and minimum a maximum memory
Press HOLD key in the default mode (displaying of actual measured value) to store actual
measured values to internal memory (indicated by short beep). Anytime it is possible to display
stored values from MENU (see below). Each pressing of the HOLD key in the default mode
causes values stored in HOLD memory are replaced with actual ones.
Switched ON instrument permanently updates minimum and maximum
memory of each measured values. Press MIN key (resp. MAX key) in the
default mode to display minimum (resp. maximum) reading. These
minimum and maximum readings are indicated by MIN (MAX) symbols
on the LCD. Press DISPLAY key to display minimum (resp. maximum)
value of other values. Pressing MIN (MAX) or MENU key again to return
to default mode. Minimum and maximum memory is cleared from menu
after confirmation selection CLR (see below). Values in HOLD, MIN and
MAX memories remain stored even after instrument is switched OFF.
