HD2301
- 8 -
V1.7
•
: once the MENU has been opened with the DATA+UNIT keys, the
key will
allow to increase the value of the selected parameter.
Pressed together with the ON/OFF key, during turn on, the AutoPowerOff function is
disabled (see the description of the ON/OFF key).
The UNIT key is used for the following functions:
•
UNIT: by pressing this key the unit of measurement of the main input quantity is
selected: the unit of measurement will appear in the upper part of the display; the
measured value will be displayed in the central line. By repeatedly pressing the
UNIT key, the desired unit of measurement can be selected between the
following:
1.
%RH % of relative humidity
2.
g/m
3
Grams of vapour in a cubic meter of dry air
3.
hPA
Partial vapour pressure (hPa)
4.
Td
Dew point (°C or °F)
By now pressing UNIT, the %RH unit of measurement is displayed again in the
comment line and, simultaneously, the unit of temperature measurement blinks.
Use the
and
arrows, if you wish to change the temperature display from
degrees Celsius (°C) to degrees Fahreneit (°F), or vice-versa. Confirm by pressing
the UNIT key or wait for the unit of measurement to stop blinking (about 15
seconds timeout).
•
MENU: in the menu two items can be set:
1.
Probe type
2.
Probe calibration
-
the menu is opened by pressing simultaneously DATA+UNIT: the first item of the
instrument programming menu will appear;
-
use the
and
arrows (respectively located above the HOLD and REL keys) to
modify the displayed value;
-
press DATA/ENTER to confirm the modification and go onto the next item;
-
press CLR/ESC to cancel the modification;
-
to exit the menu, press the UNIT/MENU key again.
The "REL" key is used for the following functions:
•
REL: it displays the difference between the current value and that measured on
pressing the key. The "REL" message is displayed on the left. To return to the
normal measurement, press the key again.
•
: once the MENU has been opened with the DATA+UNIT keys, the
key will
allow to decrease the value of the selected parameter.
REL/
key
UNIT/MENU