TM 5-3610-257-14
CHAPTER 4
DIGITAL REFLECTION DENSITOMETER
Section I. INTRODUCTION
4-1.
GENERAL INFORMATION.
4-1.1.
Scope.
a.
Model number and equipment name. Model RD-144 Digital Reflection Densitometer.
b.
Purpose of equipment. To measure color and black and white densities.
4-1.2.
Glossary.
Cathode
Dynode
Photomultiplier Tube
The negative electrode of a tube or diode.
An electrode that amplifies current by means of
secondary electron emission in an electron tube.
A phototube with one or more dynodes between its
photocathode and its output electrode.
4-2.
EQUIPMENT DESCRIPTION.
4-2.1.
Equipment Characteristics, Capabilities, and Features,. Used for measuring color and black and white
densities. The digital reflection densitometer has the following capabilities and features:
a.
Independent filter calibration controls.
b.
Quick-disconnect probe cable connector.
c.
120 V ac or 220 V ac operation.
d.
Solid state circuitry.
e.
Four digit digital readout.
f.
Readout hold.
4-1
