Beskrivelse
Bird model 4410A
BIRD 4410A Thruline® Watmeter
The Model 4410A uses the basic principles and "look and feel" of the Model 43 but transforms it into a highly accurate high dynamic range instrument. The mirroredscale linear range meter has 2 switchable ranges, 01 and 03.
Power is read as a multiple of the value indicated by the pointer, the decimal point location depending upon the range switch position and the factor printed on the plugin element. Power ranges covered by individual elements are 2 mW to 10 W, 20 mW to 100 W, 200 mW to 1 KW and 2 W to 10 KW, full scale. For most elements, accuracy is +/5% anywhere above 20% of full scale. The circuitry operates from a standard 9V alkaline battery.