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High
order levelling Precision & Reliability
Topcon’s DL-101C/102C take accuracy and ease of operation to
a higher level with its Advanced Image Processing Technology. The outstanding
features make the DL-101C/102C ideal for high precision applications including
the performance of 1st and 2nd order levelling and deformation monitoring.
Faster Automatic Measurement
When used with Topcon’s unique patterned staff, height and distance
can be automatically determined digitally by the DL-101C/102C. Since it’s
a fully automatic electronic measurement, there is no need to make an
optical reading! You just sight the staff, focus, and press the measurement
button. It’s that simple! The results appear in the clearly visible
display window after about four seconds.
Highly Accurate Measurements
The fully automatic measuring ability and digital display of the DL-101C/102C
excludes any reading errors, writing mistakes in the field book, and other
possible human-made errors. Consequently, the electronic measurement data
is always more precise and more reliable as compared to the conventional
visual measurement.
To
improve accuracy a parallel plate micrometer can be fitted over the
telescope objective. The parallel plate micrometer permits direct readings
to 0.1mm and estimated readings to 0.01mm. This makes the NA2 and NAK2
an ideal precise level for deformation studies or industrial measuring
tasks.
The NAK2 model has
an internal glass circle for reading horizontal angles. Combined with
the stadia calculation of distances from staff readings the NAK2 circle
adds the application benefit of detail survey work.
Increased Productivity
up to 50%
With Topcon’s DL-101C/102C, all levelling work can be carried
out automatically, quickly and more economically as compared to the
performance of conventional optomechanical levels. This effortless and
error-free measurement makes it possible to have up to 50% increased
productivity.
PCMCIA Memory Card System
The PCMCIA world standard memory cards can be used with DL-101C/102C.
The 256KB and 128KB memory cards are available to expand the instrument’s
internal memory capacity of 51KB. The internal memory can store up to
1.000 measurements. The PCMCIA memory card slot is concealed behind
the internal battery. This ensures a watertight protection of the PCMCIA
card.
Topcon Original Patterned Staff
Levelling staves of a variety of materials and lengths are available
with the special Topcon pattern.
Operating functions/software:
N-times measurements (to get averaged result and standard deviation)
- Horizontal distance measurement (to
the staff)
- Height determination of intermediate
points
- The display of difference in elevation
(from the Backsight to the Foresight)
- Design heights can be recalled from
the PCMCIA card and a count down to zero for stake out the height
is displayed
- Repeat measurement for recollection
- Modifying the point number (before foresight
measurement)
- Selectable minimum units for reading
- Manually input data
- Alpha/Numeric input function
- Swing correct function to reduce the
effect of vibrations. This ensures accurate and stable reading even
under windy or heavy traffic conditions.
Advanced applications:
- Network levelling (1st to 4th order)
- Deformation monitoring (monitoring and
surveillance of ground subsidence)
- Industrial surveying
- Topographical surveys (line levelling,
area levelling, levelling networks, contour-line surveys)
- Road and Rail-laying construction (longitudinal
profiles, cross-sections, setting-out of heights)
- Tunnelling and mining
SPECIFICATIONS
| SPECIFICATIONS |
DL-101C
|
DL-102C
|
| Telescope |
| Magnification |
32x
|
30x
|
| Objective
Aperture |
45mm
|
| Field
of view |
1º20’
|
| Resolving
power |
3"
|
| Compensator |
| Working
Range |
±12’
|
±15’
|
| Setting
Accuracy |
0.3"
|
0.5"
|
| Height
measurement |
| Accuracy
(Standard deviation for 1km double-run levelling) |
| Electronic
reading |
0.4mm
w/Invar staff |
1.0mm
w/Fiberglass staff |
| Optical
reading |
1.0mm
|
1.5mm
|
| Least
Count |
0.1mm/0.01mm
|
1mm/0.1mm
|
| Distance
measurement |
| Least
Count |
1cm/1mm
|
1cm
|
| Accuracy |
1cm
to 5cm |
| Measuring
range |
2m
to 100m : Fiberglass staff/Aluminium staff 2m
to 60m : Invar staff |
| Measuring
time |
4
sec. |
| Circular
level sensitivity |
8’/2mm
|
10’/2mm
|
| Others |
| Display |
2-line,
8-digit per line. Dot matrix LCD with backlight |
| Data
Storage |
PCMCIA
card (128KB/256KB/512KB) Internal
memory approx. 1,000 data |
| Data
Card |
PC
card based on PCMCIA (SRAM: 128~256K byte) |
| Data
transmission |
RS-232C
port provided |
| Keyboard |
Alphanumeric
input |
| Horizontal
Circle |
360º
or 400gon |
| Power
Supply |
On-board
rechargeable battery, NiCd 7.2V |
| Operating
Time |
10
hours |
| Ambient
Temperature Range |
-20ºC
to +50ºC [-4ºF to +122ºF] |
| Dimensions |
237
x 196 x 141mm [9.33 x 7.72 x 5.55 inch] |
| Weight |
2.8
kg [6.16 lbs.] (including on-board battery) |
| Staves |
| Aluminium
staff (various) |
Length:
5m, 4m or 3m (telescopic) 4m or 3m (folding) |
| Fiberglass
staff SG-3M |
Length:
3m (2 sections) |
| Invar
staff |
Length:
3m, 2m or 1m |
Designs and specifications herein are subject
to change without notice.
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