23-2
23 SPECIFICATIONS
Atmospheric Correction Range : –999.9 ppm to +999.9 ppm, in 0.1 ppm increments
Prism Constant Correction Range : –99.9 mm to +99.9 mm, in 0.1 mm increments
Coefficient Factor : Meter / Feet
International feet 1meter = 3.2808398501 ft.
US SURVEY feet 1meter = 3.2808333333 ft.
Electronic Angle Measurement
Method : Absolute reading
Detecting system
Horizontal angle
GPT-3002/3003/3005 : 2 sides
GPT-3007 : 1 side
Vertical angle : 1 side
GPT-3002 : 2 sides
GPT-3003/3005/3007 : 1 side
Minimum reading
GPT-3002/3003/3005 : 5" / 1" (1mgon / 0.2mgon) reading
GPT-3007 : 10" / 5" (2mgon / 1mgon) reading
Accuracy (Standard deviation based on DIN 18723 )
GPT-3002 : 2"(0.6mgon )
GPT-3003 : 3"(1mgon )
GPT-3005 : 5"(1.5mgon )
GPT-3007 : 7"(2mgon )
Measuring time : Less than 0.3 sec.
Diameter of circle : 71mm
Tilt Correction (Automatic index)
Tilt sensor
GPT-3002/3003/3005 : Automatic vertical and horizontal compensator
GPT-3007 : Automatic vertical compensator
Method : Liquid type
Compensating Range : ±3'
Correction unit : 1" (0.1mgon)
Others
Instrument height : 176mm (6.93in) Base unit detachable
(Height from the tribrach dish to the center of
telescope)
Level sensitivity
Circular level : 10'/2mm
Plate level
GPT-3002/3003/3005 : 30"/2 mm
GPT-3007 : 40"/2 mm
Optical Plummet Telescope
Magnification : 3×
Focusing range : 0.5m to infinity
Image : Erect
Field of view : 5°(ø114mm/1.3m)
Laser pointer
Light source : L.D (Visible laser)
Wave length : 690nm
Out put : 1mW maximum
Laser class : Class 2(IEC Publication 825)
: Class II(FDA/BHR 21 CFR 1040)
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