Tamaya Digital Balloon TheodoliteTD-3

TD-3 is a digital balloon theodolite which traces a pilot balloon in the sky, transfers elevation and azimuth data to printer or a computer at fixed intervals for obtaining the information of upper atmosphere. It digitalizes and displays the electric signals from the elevation and azimuth encoder. It can also sample data at a preset measurement interval on the basis of the built-in real time clock and outputs the sample data with the time information from the RS232C terminal.

Main Telescope	Magnification 18 power, field of view 2 degree 30 minutes
Sub Telescope	Magnification 4 power, field of view 11 degree
Display Unit	LCD (8 digits, 2 lines)
Azimuth	0-360 degree by 0.05 degree
Elevation	0-360 degree by 0.05 degree
Clock Function	Built-in real time clock, auto calendar
Measurement Interval	Selections(seconds); 2, 5, 10, 15, 20, 30, 60
Acoustic Measurement Command and Alarm	Buzzing
External I/O Function	RS232C
Level Vial Sensitivity	3'/2 mm
Power	a. AC adaptor b. Dry battery SUM-2 4 pcs.
Operation Time	Manganese: 9 hours / Alkaline: 30 hours
Standard Accessories	Carrying case, Hood, Tripod, Earphone for buzzer, Eyepiece filters (red, yellow, green), Tubular compass, Level vial adjusting pin, AC adaptor, 4 pcs. of Alkaline dry battery SUM-2
Dimensions & Weight	Body 275(H) x 245(W) x 280(L) mm 10.0 kgs. Case 315(H) x 330(W) x 340(L) mm 4.0 kgs.