2.5 Seconds - High-Speed Measurement
Aim, Focus, and press a key. Height and distance are simultaneously measure in 2.5 seconds, 20 percent faster than ordinary digital levels.
Consistent Performance in Diverse Environments
The SDL50 provides the superior measurement capability under a variety of environmental conditions. Even when the staff surface is partially shaded, or in dim lighting conditions where the brightness at staff surface is as low as 20 lux, the SDL50 consistently provides reliable measurement results without downtime. A small flashlight is enough to illuminate the staff in the dark.
Automatic Recognition of Inverted Staff
The SDL50 automatically recognizes directions of RAB-Code staffs and displays the result with a minus sign (-) when the staff is inverted. Heigh of ceiling, overpass, bridge, road sign, tree branch, tunnel crown, and other objects can be easily measured without a calculator.
Wave-and-Read Technology
The innovative "Wave-and-Read' Technology provides an additional survey style option. The SDL50 tracks the RAB-Code staff waved back and forth to read the correct height. The staff reading becomes the minimum when it is in vertical position. The SDL50 automatically detects the least value of staff readings.
Choice of Accuracy
SDL50: 0.6mm (New Super-Invar Staff) / 0.8mm (Invar) / 1.5mm (Fiberglass)
Internal Memory
Up to 2,000 measurement data of elevation or height difference can be recorded in the internal memory. Auto mode records data as soon as the measurement results before recording. Stored data can be exported using the "Spectrum Link" Software.
Convenient Onboard Programs
The onboard measuremnt programs of SDL50 facilitate leveling and setting-out tasks. Programs include:
- Elevation
- Heigh Difference
- Cut and Fill Setting-out
- Setting-out in Distance
Specifications:
| Height Accuracy (ISO 17123-2) |
Electronic BIS30A Staff BIS20/30 Staffs BGS Staffs Visual BGS Staffs |
0.6mm (0.024in.) 0.8mm (0.03in.) 1.5mm (0.06in.) 2.0mm (0.08in.) |
| Distance Accuracy (D: Measuring Distance) |
Electronic |
<±10mm (±0.4in.) [D≤10m (D≤33ft.)] <±0.1% x D [10<D≤50m (33<D≤ 164ft.) <±0.2% x D [50<D≤100m (164<D≤328ft.)] |
| Measuring Range |
Electronic Visual |
1.6 to 100m (5.3 to 328ft.) from 1.5m (5.0ft.) |
| Measuring Mode |
Single /
Repeat / Average / Tracking / Wave-and-Read |
|
| Display Resolution |
Height Distance |
0.0001/0.001/0.01m
(0.001/0.01/1ft., 1/8in.) 0.01/0.1m (0.1/1ft., 1in.) |
| Measuring Time |
Single / Repeat Average Tracking |
<2.5s <2.5s x [number of measurements] <1s |
| Minimum brightness condition |
20 lux
at the surface of staff (with natural light) |
|
| Telescope |
Objective aperture Magnification / Resolving Power Minimum focus / Field of View |
36mm (1.4in.) 28x / 3.5" 1.5m (5ft.) / 1°20' |
| Compensator |
Type Working Range |
Pendulum compensator with
magnetic damping system ±15' |
| Sensitivity of circular level |
10'/2mm |
|
| Horizontal Circle |
Diameter:
103mm (4in.), Graduation: 1° (1gon) |
|
| Display |
Dot
matrix LCD (128 x 32 dot) with illuminator |
|
| Keyboard |
8 keys
(7 key son front panel, 1 key on side panel) |
|
| Data storage |
2,000
points internal memory |
|
| Interface |
RS-232C,
Baud rate 1,200 to 38,400bps |
|
| Onboard programs |
Elevation
/ Height difference / Cut & Fill setting-out / Settin-out distance
/ Height measurement |
|
| Water Resistance |
IPX4
(IEC60529:2001) |
|
| Operating Temperature |
-20 to
+50°C (-4 to 122°F) |
|
| Size |
W158 x
D257 x H182mm (W6.2 x D10.1 x H7.2in.) |
|
| Weight with Battery |
2.4kg
(5.3lb.) |
|
| Standard Battery |
BDC46B
(Rechargeable Li-ion, 7.2v, 2.45aH) |
|
| Operating Time |
Approx.
16 hours at 25°C (77°F) |
|