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Of course, the performance of the domestic one should be stable??!
I don't know if the prism-free function will be used in the construction of power transmission lines.
Assumptions: 1. There is no need for a prism-free function.
That is the Covey TKS-202, which is produced domestically by Topcon. The performance of the whole set is much better than that of the domestic Bofei, Nanfang and the like!
The following are the technical specifications, (eighteen months warranty).
It is recommended that you go to Beijing Xinbeiguang Earth Instrument **** and ask.
Gowin Covey TKS-202
Specifications:
Telescope Objective aperture 45mm (EDM: 50mm) magnification 30x
Imaging orthogram.
FOV 1 30
Resolution"Shortest line of sight.
Angular Measurement Angular Measurement Accuracy 2"
Reading method Absolutes reading.
Minimum reading 1"/5"Can be set.
Distance measurement Ranging range Single prism 2000m
Triangular prism 2700m
Measurement accuracy (2mm+2ppm*d**.)
Ranging time Precision measurement mode Approx. seconds (4 seconds for the first time).
Coarse test mode: about seconds.
Tracking mode about seconds.
Meteorological correction Yes.
Prism constant correction Yes.
Two difference correction Yes.
Software and Data Transfer.
Memory capacity: 24,000 points for data acquisition, 24,000 points for coordinates, communication interface, standard RS-232C
Other tilt compensator mode liquid type.
Compensation Scope 3
Level sensitivity Long level 30"/2mm
Circular level 10"/2mm
Optical centerer imaging orthodoxy.
Magnification 3x
Focus range. FOV 3 or more.
Durability: Waterproof and dustproof rating: IP54 (BT-L1 battery included), operating temperature -20 +50
Power supply: Continuous angle measurement for 60 hours.
Continuous ranging for 14 hours.
Instrument size: 336mm*184mm*172mm, main unit weight, including battery.
Batteries are not included. If you need to use the prism-free function, I recommend you to buy the imported Topcon GPT-3002LN type.
The domestic one is really not good, buy back the old maintenance waste time, and then delay the construction period is not cost-effective!
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Sanding Optoelectronics' STS-752 is reasonably designed and powerful** cheap.
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Leica's second brand --- GEOMAX mid-latitude, absolutely NO1**022-87310655
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What total station is the same, the key is the software, the total station does not have special power software, only GPS RTK has special power measurement software.
So if you use a total station, just consider the price and accuracy.
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With GPS, this has a special power measurement software, if you use a total station, it depends on what post-processing software you use, which total station you use does not matter, as long as the accuracy meets the requirements.
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It is particularly convenient to use Zhonghaida's RTK and his special power measurement software, and it is not expensive 1+2 only 8 to 100,000 yuan.
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Let's talk about the equipment and instruments first, and pick the main ones.
The first is to retest the line and re-pile: GPS equipment, theodolite or total station.
Second, site transportation: dump trucks, truck cranes (5t or 8t), loaders.
Third, earthwork and foundation construction (depending on the geological conditions): excavators, rock drills, air compressors, well point drainage devices, well drilling machines (underwater cast-in-place piles), pile drivers, concrete mixers, vibrators.
Fourth, vertical towers: truck cranes, various poles (selected according to different tower schemes), motorized grinding (manpower is also acceptable), various specifications of wire ropes, chain hoists (inverted chains), various specifications of lifting pulleys.
Fifth, wire: ground guide pulley, traction wire rope, motorized grinding, hydraulic press and steel mold, telescope, theodolite, optical fiber fusion splicer.
There is also a grounding shake meter to measure the grounding resistance.
I'm sorry, it's definitely not complete.
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I can make you a list of materials and construction drawings, including a list of towers, etc.
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Your question is too general.
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Hello, from the perspective of surveying and mapping, the smooth development of a project, in a long period of time, the total station plays an important role: 1 In the planning and design stage of the project, the total station is used to carry out topographic map surveying and mapping work (according to the topographic map to calculate the amount of earthwork, slope, building location determination, etc.); 2. During the construction stage of the construction of the project, various coordinate lofting work (foundation pit location, engineering pile position, axis transmission, etc.) shall be carried out, and at the same time, in order to ensure the safety of the construction, various safety monitoring work (deformation monitoring) shall be carried out.
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The first consideration of the purchase of the whole site BAI instrument is the requirements of precision, according to your industry, the content of the project you are constructing, the technical design requirements, the requirements of the owner, the supervisor, etc. Generally, it is the difference between 6 and 6, of course, there is a difference. Personally, I think that the principle of choice is enough.
The next step is to consider the budget, how much do you plan to spend on a total station? If funds permit, try to choose imported brands, because after all, the total station is a special product, requiring precision, stability, processing technology and other factors, domestic total station can be said to be cheap, but the quality is still unsatisfactory. The common brands of imported total stations are Leica, Topcon, Tianbao, etc., with relatively large sales volume and better quality.
If the capital is less than 20,000 yuan, you can only consider domestic brands, and the usual saying is that after using two projects, the instrument is almost ......
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Total station coordinate lofting, construction line surveyor to take you to use the total station.
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In two steps:
First of all, prepare before lofting: unify the coordinates of the lofting work area and the coordinates of the drawings (you can ask Party A or the topographic survey department for the design drawings for control points). Extract the coordinates of the points you need to lof, and then enter them into the total station (less points are manually entered, and more points are entered in accordance with the file format of the total station measurement coordinates, enter the txt file, and import it.)
The station is selected by the control point on site, and the point lofting is carried out after the detection coordinates are correct. After lofting, 100% absolute value inspection must be carried out on the lofting point (the inspection method must be selected according to the construction payout accuracy requirements).
If you still have questions, please ask.
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