Measuring Procedure - Lutron Electronics ARW 4220 User Manual

User's manual
4. INSTALL THE VANE CUP (fig.2)
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5. MEASURING PROCEDURE

5-1 Wind speed measurement
1– Turn on the meter by pressing the " Power Button " ( 3-2, Fig. 1 ) momentarily.
* Pressing the " Power Button " ( 3-2, Fig. 1 ) momentarily again will turn off the meter.
2– Uses the hand to hold the meter vertically. The " Cup Vane " ( 3-1 ) will be rotated, shows the
measured the wind speed value on the " LCD Display " ( 3-5, Fig. 1 ).
5-2 Unit change
3– Meter defaults unit value is " m/s ". Meter unit value can be changed to " m/s, km/h, knot,
ft/min, mile/h "
4– 2) The method to change the unit: Press the '" Unit Button " ( 3-3, Fig. 1 ) continuously, after
several seconds the unit will change from m/s, km/h, knot, ft/min, mile/h " in sequence. Until
reach the desired unit, release the finger from the " Unit Button " ( 3-3, Fig. 1 ), new unit will
saving into the memory circuit no matter the meter is turned off.
* When the display shows " HOLD " ( refer 5-3 ) or " REC " ( refer 5-4 ), it can not change the unit.
Rotate the top screw in counter clockwise
direction until the screw is secured.
5-3 Data Hold
˜ During the measurement, press the " Hold Button " ( 3-3, Fig. 1 ) momentarily to hold the mea-
sured value. The LCD will show a " HOLD " symbol.
˜ Press the" Hold Button " once again to release the data hold function.
5-4 Data Record ( Max., Min. reading )
5– The data record function records the maximum and minimum readings. Press the " REC But-
ton " ( 3-4, Fig. 1 ) momentarily to start the Data Record function, shows " REC " on the display.
6– With the " REC " symbol on the display.
a– Press the " REC Button " ( 3-4, Fig. 1 ) momentarily, the " REC MAX " symbol along with the
maximum value will appear on the display.
b– Press the " REC Button " ( 3-4, Fig. 1 ) momentarily again, the " REC MIN " symbol along with
the minimum value will appear on the display.
* When display shows " REC MAX " or " REC MIN ", press the " Hold Button " ( 3-3, Fig. 1 ) momen-
tarily will delete the max. ( min. ) value, the display will show the " REC. " only and execute the memory
function continuously.
c– To exit the memory record function, press the " REC " button for 2 seconds at least. The display
will revert to the current reading, not show " REC "
6. DATA LOGGER
The meter can save max. 100 point data into the the memory circuit
6-1 Save data
1– Turn on the meter.
2– Press the " REC Button " ( 3-4, Fig. 1 ) momentarily, shows " REC " on the display.
3– Press the " Logger Button " ( 3-2, Fig. 1 ) momentarily will save one measuring value to me-
mory, display will show:
Example:
28
a: The memory position that
72 b: The memory left space no.
c: a + b = 100
For example : 28 + 72 = 100
4– To exit the memory data logger ( record ) function, press the " REC " button for 2 seconds at
least. The display will revert to the current reading, not show " REC
User's manual
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