| | Contact: Louis C. Eitzen Company, Inc. Manufacturer of the VISGAGE Pocket Viscometer and the Eitzen Portable Brinell Meter - P. O. Box 1210
- Glenwood Springs, CO
- 81602-1210 USA
| | Toll Free | 888-950-7572 | | 970-945-7572 | | Fax | 970-945-2738 |
e-mail: sales@Visgage.com |
| | - VISGAGE - A POCKET VISCOSITY COMPARATOR
- Model #2 and Model #4 Operating Instructions
| PAGE 3 |
| HOW TO BE CERTAIN THAT OILS ARE THE SAME TEMPERATURE: Slowly raise plunger end of VISGAGE to angle between 30 to 45 degrees. Take two or three readings. If readings repeat, the oils are the same temperatures. If readings do not repeat, allow another few minutes to equalize temperature until a few readings repeat. The final repeat reading indicates the viscosity of the test oil directly in Saybolt Universal Seconds at 100°F. HOT OILS: WARNING: Do not immerse VISGAGE in hot oil or hot water to equalize temperatures. Do not heat VISGAGE above 100°F (see "Heating the VISGAGE" on page 4). CLEANING: The VISGAGE is self-cleaning. When the oil is discharged after a test, returning the plunger to its original position effectively cleans the wall of the test tube. A small amount of oil will remain in the bore of the nozzle. To discharge this, fill the test tube with the next oil to be tested, discharge and discard it. This will clean the nozzle of the previous oil before the new test is made. Non-use of the VISGAGE over a period of time with residue oil in the test tube may gum the ball and the wall of the tube. To remove gum, draw into the test tube a few charges of light oil or kerosene to dissolve the residue. Do not use straight gasoline or naphtha. |  
| DARK COLORED OILS: Dark colored oils in the test tube may make it difficult to see the ball. To overcome this, follow standard test procedure under READING. Then, with your back to the light (Fig. 6) and full light on the scale, (Fig. 7 & 8) tilt reference tube toward you 90 degrees to bring the ball in the test tube into sight. The point on the scale corresponding to the position of the ball indicates the viscosity of the test oil direct at which it was rated in Saybolt Universal Seconds at 100°F (Fig. 8), The VISGAGE is designed and constructed to test the viscosity of new and used oils hut not sludge or crude.
Whenever the ball in the test tube can no longer be seen, you will know the oil is so badly fouled with contaminants that it needs to be changed immediately or cleaned by any of the appropriate cleaning methods. Viscosity Index (VI)): The reference tube contains certified oil with a viscosity index of 95 VI. Best accuracy is achieved when the oil being tested has a VI near the VI of the reference oil, and several identical readings on the scale indicate temperatures of both tubes are equal. If the VI's of the oils are far apart (for example, 95 VI in reference tube, 40 VI in test oil), warm VISGAGE to 100°F, and then take readings. | - MODEL #2
- SCALE RANGE - 0 TO 2000 SUS @ 100ºF.
- Recommended range for readings approximately 40 to 800 SUS
| - MODEL #4
- SCALE RANGE - 0 TO 2000 SUS @ 100ºF.
- Recommended range for readings approximately 400 to 1400 SUS
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