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ACCREDITED ISO 17025
CALIBRATION LAB
THERMOMETERS
DUROMETERS
DUROMETER TEST STANDS
STEEL HARDNESS TESTERS
OPTICAL INSTRUMENTS
DATA LOGGERS
6" BENCH POLARISCOPE
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OPTICAL INSTRUMENTS
PTC® Six Inch Bench Polariscope #243
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PTC® Polariscope
Six Inch Bench Polariscope #243
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$1,495.00
Six Inch Bench Polariscope
Part Number:
243
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Description
Specifications
Instructions
The Polariscope is a crucial tool for identifying strain patterns that develop during fabrication and manufacturing. It permits immediate determination of strains in most transparent materials. It is valuable in production or as a laboratory tool wherever glass is fabricated, welded, or bent. Check the liquid in glass thermometers for stress and strains.
As polarized light travels through strained glass or plastic, it undergoes a retardation proportional to the amount of stress. A Polariscope is an instrument that can be used to view this retardation qualitatively.
Tech Note: When a photoelastic material is subjected to a load and illuminated with polarized light from the measurement instrumentation (called a reflection polariscope), patterns of color appear which are directly proportional to the stresses and strains within the material. The sequence of colors observed as stress increases is: black (zero stress), yellow, red, blue-green, yellow, red, blue-green, yellow, red, etc. The transition lines seen between the red and green bands are known as "fringes." The stresses in the material increase proportionally as the number of fringes increases. Closely spaced fringes mean a steeper stress gradient, and uniform color represents a uniformly stressed area. Hence, the overall stress distribution can easily be studied by observing the numerical order and spacing of the fringes.
Documentation PDF:
243 Polariscope
Field diameter.....................................5.75 in. (14.6 cm)
Unit height................................................18 in. (46 cm)
Power............................ 115-125V AC or DC, 7 ft. cord.
Weight........................................................8 lb. (3.6 kg)
Shipping weight........................................31 lb. (5.0 kg)
Loosen the red knob. Slide the Analyzer towards the top of the Support Rod. Tighten the knob.
Slide the Tint Plate up the Support Rod, giving enough clearance to place your sample between the Polarizer and the Tint Plate (which is at the top of the Base Assembly) and the Tint Plate.
Plug the cord into a standard 115-125V AC outlet and turn on the unit's light source using the switch on the Base Assembly.
Place the sample to be viewed on top of the Polarizer Ring.
Using the Tint Plate will show the strains in color. If desired, swing the Tint Plate out of the way for a black & white image.
Rotating the Polarizer Ring will adjust the contrast/brightness. The ring can be rotated a full 360°.
The color balance/hue can be adjusted by rotating the Tint Plate.
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