DESCRIPTION
The Solid State Model CA Ellipsometer is a versatile, precision, instrument for rapid oil film measurement on tinplate. chrome oxide (tin free steel), steel, aluminum, and other metals. It uses a highly accurate optical system before and after automatic degreasing to the film thickness. The coating weight is computed by solid state circuitry and displayed with an LED readout in English units (Metric units are optional).
This instrument has been carefully designed to minimize operating skill and maintenance requirements. To use, the operator places a sample in the sample chamber and depresses the start button. The instrument will automatically obtain and display the coating weight in approximately 40 seconds. This reading remains displayed until reset when another measurement cycle is initiated. There are only two operating adjustments. These are used only when radical differences in luster are encountered.
Solid state logic circuitry controls the various measurement cycles using solid state relays. The instrument can be set up by any competent laboratory technician. Two manuals containing installation, operating, and maintenance instructions are supplied with each instrument.
New Improvements to CA Ellipsometer
Donart has made significant improvements to the Model CA Ellipsometer. A major improvement is the hardware update that allows automatic setup of the Ellipsometer. This hardware update eliminates the need for the operator to set up the Ellipsometer for each type of sample surface. This aids in the elimination of operator setup errors and reduces the amount of time required to perform each test.
Another improvement is our new self relieving pressure relief valve. In the past, Donart has used a pressure relief valve with a replaceable rupture disc. The new pressure relief valves are custom built for the Donart Model CA Ellipsometer. They eliminate the need for relieving tank pressure in initial fireup. This breakthrough technology will eliminate downtime caused by ruptured disc failure.
Through extensive research, Donart has also found a replacement solvent for trichloroethylene. The new solvent, Leksol, is non-carcinogenic and has no current EPA regulations. This solvent is a direct replacement for trichloroethylene, requiring only a minimal adjustment to the tank temperature of the Ellipsometer. It is also comparable in price to trichloroethylene and has better long term stability.
Contact Donart Electronics for further details and availibility.
SPECIFICATIONS
REPEATABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.15 gm/bb
ANGULAR RANGE . . . . . . . . . . . . . . . . . . . . . . . . . 20 degrees
MEASUREMENT RANGE . . . . . . . . . . . . . . . . . . . . In excess of 1.0 gm/bb
SAMPLE SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 to 3 inch diameter
READOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direct in oil coating weight with LED numerals
MEASUREMENT TIME . . . . . . . . . . . . . . . . . . . . . . Approximately 45 seconds
POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . 115 Volts, 60 Hz, 600 VA
(50 Hz, 220 Volt options)
VENT SIZE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 inch diameter
CABINET SIZE. . . . . . . . . . . . . . . . . . . . . . . . . . . .24" X 26" X 50"
APPROXIMATE WEIGHT. . . . . . . . . . . . . . . . . . . . .300 lbs.
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MODEL CA ELLIPSOMETER OPTIONS
