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22. SURFACE AREA CALCULATION
4. Sight the first point on the line enclosing the area, and press
[OBS]
.
• The tilt screen is displayed if the instrument is out of level.
Level the instrument.
5. Press
[MEAS]
to begin observation.
The measured values are displayed.
6. Press
[OK]
to enter the value of the first point in “01”.
• Press
[REC]
in the second screen of step 5 to record code,
target height, and point name. The point name recorded
here will be displayed in "01".
7. Repeat steps 4 to 6 until all points have been measured.
Points on an enclosed area are observed in a clockwise or
counterclockwise direction.
For example, the area specified by entering point names 1,
2, 3, 4, 5 or 5, 4, 3, 2, 1 implies the same shape.
After all known points necessary to calculate the surface
area have been observed,
[CALC]
is displayed.
8. Press
[CALC]
to display the calculated area.
PT
: number of set points
SArea : slope area
HArea : horizontal area
9. Press
[REC]
in the screen of step 8 to record results and
return to <Menu>.
Press
[OK]
to return to <Menu> without recording results.
PROCEDURE Surface area calculation by reading in the points’ coordinates
1. In the second OBS mode screen, press
[MENU]
, then
select "Area calc.".
2. Enter the instrument station data.
3. Select "Area calculation" in <Area calculation>.
OBS
LOAD
N
E
Z
12.345
137.186
1.234
0
ZA
HA-R
90
109
01
32
25
00
REC
MEAS
OK
OBS
Pt_01
OBS
CALC
Pt_01
Pt_02
Pt_03
Pt_04
Pt_05
PT 5
SArea
468.064m
2
0.0468ha
431.055m
2
0.0431ha
HArea
REC
OK