TM 5-3610-257-14
Reflection Probe
Width
2.3 in. (5.8 cm)
Height
2.6 in. (6.6 cm)
Depth
5.3 in. (13.5 mm)
Power Requirements
85 - 135 V ac or 170 - 270 V ac,
50/60 Hz, single phase
Density Range
0.000 to 4.000
Readout
4 digit, 7/8 in. (22 mm) high
numerals
Digital Readout Accuracy Range
±0.015
Measurement Time
1/50 second max.
Sampling Rate
5 measurements per second
minimum
Standard Filters Visual(Gold) Wratten #106
Red
Wratten #25
Green
Wratten #58
Blue
Wratten #47
Lamp Life
20,000+ hours
4-3.
TECHNICAL PRINCIPLES OF OPERATION.
4-3.1.
General. The digital reflection densitometer is a self-contained light measuring instrument. It consists of the
densitometer and reflection probe. The reflection probe directs light from a lamp through a lens and mirror optical system
which strikes the unknown sample. Diffused light from the surface of the sample is collected by a group of fiber optic
bundles. The bundles direct the light to the densitometer, where it is translated into a density measurement and displayed
as a digital readout.
4-3
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