- -
8
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:
•
for wind speed: m/s - km/h - ft/min - mph - knot
•
for calculated flow rate: l/s - m³/s - m³/min - m³/h - ft³/s - ft³/min
By now pressing
UNIT
, the m/s 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 three items can be set (see chapter 3):
1.
SECT m
2
- SECT inch
2
:
this parameter defines a duct's
section area
for flow rate
calculation.
2.
The filter
FAST
or
SLOW
used during measurements
3.
Probe type
-
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.
•
During normal operation, it sets the hot-wire probe to stand-by if the probe is connected to
the input.
•
In the menu, it changes the section's unit of measurement to inch2 or m2.
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 for both measurements: main and secondary. 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
key, the
key will allow to
decrease the value of the selected parameter.
REL/
key
STD-BY key
UNIT/MENU key
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