Theodolite,Total station Description and Specifications for Lab Tenders
Theodolite,Total station.
a)Telescope
fully transiting, coaxial sighting and distance measuring optics objective aperture 45mm(1.8in) (EDM:50mm)(2.0in) .magnification ..................30x .Image.................................Erect .Resolving power.................3" .Field of view.......................1 ÌŠ30" (26m/1,00m) .Minimum focus ................1.0m(3.3ft) .Reticule illumination.............built bright/Do. Selectable .focusing ring......................Fine/ coarse two speeds.
b) Angle measurement
photoelectric incremental rotary encoders scanning. both circles adopt diametrical detective and are provided with absolute 0 index points. Unit H&V 360 ÌŠ/400gon/Guad Bring/mil,selectable . Display resolution(selectable) H&V....1"/0.2mgon/0.005 mil . Accuracy H & V ....................3" (1 m gon) . Measuring time H & V......Less than 0.5 seconds . . Automatic dual -Axes level Compensator :-ON (V & H,Only V ) OFF selectable display: Digital/Graphic; selectable.
. Type ........Ddual -axis liquid tilt sensor . range......± 3' (± 55 mgon) out -of - range warning displayed. . Display mode resolution According to selection of display resolution . Collimation program.... ON /OFF Selectable . Display mode....... H: CLOCK WISE /encounter clock wise, selectable:0 set angle setting , available . V: zenith Angle (zenith 0 ÌŠ) vertical angle (Horizontal 00) selectable.
c) Distance mode Measurement ....modulation near infrared light , 3 frequencies , near infrared LED ,Coaxial EDM transmitting and receiving optics. Measuring range (slope distance) average conditions: slight haze , visibility about 20km,sunny periods weak scintillation. Good condition : no haze , visibility about 40 km overcast no scintillation . Reflective sheet target in average conditions: 1 m to 100m With nine Apol prism
in Good condition: 1m to 3500m
and 1m to 4000m
resolution:
Fine measurement….0.001m
Rapid measurement ….. 0.01m
Tracking measurement ……0.01m
Unambiguous measuring range (slope distance) ….…/9,999.9999m
Accuracy with glass prism: fine meas.
(± 2+2 ppm) ×D)mm Rapid meas. ± (5+52 ppm) x D ) mm
Measuring time …….
Fine meas… single / Repeat- Every 2.05
Rapid meas single / Repeat- Every 0.95
Tracking meas…… Every 0.45
Atmospheric correction:
Temperature input range – 30 ÌŠ c to (0.01 ÌŠc steps )
Pressure input range … 500hpa to 1400 hpa (1hps steps).
375 mm HG to 1.050 mm HG (1mm HG STEPS)
PPm input range …0%to 100% (1%steps)
Prism constant correction … -99 mm (1mm) Reflecting & earth curvature correction …. ON
(K =00.14 / K = 0.20 ) OFF selectable
Audio target acquisition …. Display and audio :ON/OFF Selectable
Automatic light intensity control Provided
d) computer and data transfer
Cpu… (10MHZ)
Operating system …MS - DOS compatible
RAM >1MB. System ROM 128 KB.
ROMDISK (for aplicable softwar)…1MG RO RAMDI --512 KB data storage- internal memory 512KB.SRAM , data memory capacity Approximately 5000 points
Memory card >1MB
Calendar clock function: provided
Calendar clock function: provided
Interface ……… asynchronous serial , RS232c compatible .
e) power supply
Operating voltage …….6BDC
Battery level display …4 steps with warning message
Automatic power OFF/ ON Selectable (back up for about 1week)
BDC 35 Rechargeable Battery…NI- MH Rechargeable battery 2pcs , supplied Battery charger:220V,50hz
f) batteries with battery chargers including all accessory, plum bob, software &instruction manual