Digital Level China Engineering Lab Training System Suppliers
|
Standard deviation for 1 km double run leveling |
figure reading |
1.0mm |
1.5mm |
|
optical reading |
2.0mm |
2.0mm |
|
|
Range |
figure reading |
1.5m~100m |
1.5m~100m |
|
Accuracy |
distance measuring |
DD>10m:D*0.001 |
DD>10m:D*0.001 |
|
Minimum display |
VD |
1mm/0.1mm |
1mm/0.5mm |
|
distance |
0.1/1cm |
0.1/1cm |
|
|
Measuring time |
< 3second under normal condition |
< 3second under normal condition |
|
|
Telescope |
magnification |
32× |
32× |
|
resolving power |
3" |
3" |
|
|
field of view |
1°20' |
1°20' |
|
|
stadia ratio |
100 |
100 |
|
|
stadia addition constant |
0 |
0 |
|
|
Compensator |
type |
Magnetic damped pendulum |
Magnetic damped pendulum |
|
compensation range |
>±12' |
>±12' |
|
|
accuracy |
0.3"/1' |
0.5"/1' |
|
|
Storage |
memory |
16MB |
16MB |
|
point number |
Ascending/descending/custom |
Ascending |
|
|
interface |
USB |
USB |
|
|
extended memory |
SD card |
------ |
|
|
Circular bubble sensitivity |
8'/2mm |
8'/2mm |
|
|
Automatic shut off |
5 min. /OFF |
5min./OFF |
|
|
Horizontal limb |
scale value |
1° |
1° |
|
Display screen |
illumined 160×64 point lattice LCD |
illumined 128×32 point lattice LCD |
|
|
Working temperature |
-20~50oC |
-20~50oC |
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