Imported TOPCON dl-501 Chinese electronic level

 
DL-501
• Rab coding technology, optical system, reliable magnetic damping
  Pendulum compensator can ensure the accuracy of reading;
• Dual axis compensation system, tilt limit prompt, wireless remote control, automatic
  Focusing function can ensure focusing accuracy;
• Even under dim conditions, as long as the brightness of the ruler surface is more than 20lx,
  Dl-501 can get reliable readings

Rapid measurement technology
Dl-501 has 2
5 second speed measurement technology in both enhanced and standard models
With & ldquo; Auto focus & rdquo; The speed measurement can be significantly improved
Compared with manual focusing digital level, the measurement time can be reduced by 40% from ruler aiming to data storage

Measurement and recording procedure
The airborne software supports the following common observation programs and their data records:
• Mode: BF / bffb / bbff / BFBF / ABF / abffb / afbbf;
• The line leveling procedure meets the requirements of Chinese leveling specifications

• Various limit values can be set for the leveling route and can be measured in the survey
  Check each tolerance

Rab code leveling rod
 
Material model length linear expansion coefficient
Precision indium steel ruler bis30a3m & plusmn; 0
1ppm/℃
Ordinary indium steel ruler bis202m1ppm / ℃
BIS303m1ppm/℃
 
Material model length, back engraving
FRP bgs404m metric
Bgs505m metric
 
Dl-501 technical parameters
Dl-501 enhanced dl-501 standard
　　　
Telescope objective aperture: 45mm, magnification: 32x
Resolution: 3 & quot;, Sight distance: 1
5m, field angle: 1 & deg; 20'
Automatic focusing mode distance comparison measurement-
Special Rab coding ruler for focusing object-
Range 1
6 ~ 100m-
Focusing time: 0
8 ~ 4
0s-
Automatic conversion of AF / MF mode (mainly MF mode)-
Magnification: 4
5X-
Compensator
Type pendulum compensator for magnetic damping system
Compensation range & Ge; 12'　
Compensation accuracy & plusmn; 0
3" 　
Tilt overrun warning sensor biaxial liquid tilt sensor
Function information prompt / sound prompt / inclination up to & plusmn; 8
5 'unable to measure
(on / off optional)
　　　　
Distance measurement
Measurement accuracy * 1bis30a indium steel ruler 0
2mm-
Bis20 / 30 indium steel ruler , - 0
3mm
BGS indium steel ruler 1
0mm
Manual reading 1
0mm (BGS glass indium steel ruler)
Ranging accuracy
(D: distance measurement) d & le; 10m≤& plusmn; 10mm　
　10m< D≤ 50m≤& plusmn; 0
1% x D　
　50m< D≤ 100m≤& plusmn; 0
2% x D　
Two difference correction k = 0
142/0
20/no correction, optional
Range electronic reading 1
6 ~ 100m
Manual reading from 1
5m
Display elevation 0
00001/0
0001/0
001m
Distance 0
001/0
01/0
1m
Measurement time single / repeat & lt; 2
5s　
Mean & lt; 2
5s x [number of measurements]
Repeat quick test & lt; 1s　
Measurable illuminance 20lx (ruler illumination)
User interface
Display LED backlight LCD graphic display
Keyboard 27 key backlit alphanumeric keyboard
DLC1 3-key infrared optional
Leveling procedure 2 BF, bffb, bbff, BFBF, ABF, abffb, afbbf
Each mode has 2 medium viewpoints
　　　　
Level sensitivity circular level 8 '/ 2mm
LCD graphic level & plusmn; 12 '/ inner circle, & plusmn; 24 '/ outer circle
Horizontal dial diameter: 103mm, division value: 1 & deg; 　
Data management
10000 data points in data storage memory
External memory SD / SDHC card (up to 4GB), USB storage (up to 4GB)
Port RS-232C baud rate 1200 ~ 57600 BPS
Usbusb 1
1 type A
Environmental indicators
Dustproof and waterproof grade IP54 (iec60529:2001)
Working temperature - 20 DEG; C ~ +50° C　
Physical index
Dimensions 260 L x 226 W x 200mm H
Weight (including battery bdc58) 3
5kg3 4kg
Power system
Standard battery bdc58 (rechargeable lithium battery, 7
2V, 4
3ah)
The working time is about 9 hours-
(at 20 ℃) manual focusing for about 12 hours and about 14 hours
Power display 4 grid display, low power warning
Automatic shutdown for 30 minutes no operation / manual (optional)
Standard deviation of round trip error per kilometer (mean square error) , 2 B: rear view, F: front view, a: alternating