All 3 types of the Gardco Ford Cups (Ford Standard, Ford Dip, Ford Mini Dip) are alodine finished machined aluminum with easily removable "Snap-in, Snap-out" orifices. Close production tolerance of cup and orifice permits replacement or interchange of orifices without loss of acceptable accuracy. They have a Certificate of Calibration traceable to the U.S. National Institute of Standards and Technolog
Features
Ford Standard Ford Cups
Ford Standard Dip Cups (with No. 3, 4, and 5 orifices)
This cup has the same capacity as the Standard Laboratory type Ford Viscosity Cup designed for use with a stand. However, this new cup is fitted with a red anodized aluminum handle and the drip ring at the top of the cup has been eliminated.
Ford Mini Dip Cups
A mathematical formula developed for each Mini Ford Dip Cup in the series, relating time in seconds to centistoke viscosity defines cup flow characteristics with respect to standard oils traceable to U.S. National Institute of Standards & Technology. The resulting formula have been solved for each tenth second within the recommended cup range. A table with this information as well as the cup formula is furnished free with each cup.
Technical Attributes
Ford Standard Cups | |||
Ford Standard Cup Number | Conversion Chart Seconds Range | Conversion Chart Centistoke Viscosity Range | Calibration Liquid |
0 | 57 to 120 | 2 to 14 | G-6 |
1 | 60 to 120 | 12 to 40 | G-10 |
2 | 37 to 120 | 25 to 120 | G-35 |
3 | 23 to 120 | 29 to 273 | G-60 |
4 | 16 to 120 | 34 to 441 | G-60 |
5 | 10 to 120 | 77 to 1413 | G-200 |
Ford Standard Dip Cups | |||
Ford Dip Cup Number | Standard Oil | Approximate Centistoke Value | Efflux Time In Secs. |
3 | G60 | 120 | 56 |
4 | G60 | 120 | 35 |
5 | G200 | 450 | 39 |
To find the exact efflux time in seconds, substitute the centistoke value of the oil from the bottle label in the conversion table furnished with the cup. Read from the table the applicable efflux time in seconds or use the formula on the reverse side of the table. | |||
Ford Mini Dip Cups | |||
Ford Mini Dip Cup Number | Conversion Chart Seconds Range | Conversion Chart Centistoke Viscosity Range | Average Centistokes Per Sec. |
0 | 28 to 60 | 2 to 14 | 0.4 |
1 | 30 to 60 | 12 to 40 | 1.0 |
2 | 18 to 50 | 25 to 120 | 2.8 |
3 | 12 to 60 | 29 to 273 | 5.0 |
4 | 10 to 60 | 53 to 441 | 7.6 |
5 | 10 to 60 | 215 to 1413 | 25.0 |
More Information
Ford Standard Cup
The internal dimensions conform to those specified in the ASTM Method D1200 except for the diameter of the orifice. Even here there is close agreement, but the diameter of the orifice is adjusted to bring the cup into conformity with the flow formula.
Most of the Ford cups produced by others to date have an external cup diameter that extends below the level of the orifice. This results in a large amount of metal adjacent to the orifice which can adversely affect the accuracy of the reading if the cup and material being measured are not at the same temperature at the time the measurement is started. Most of this mass of metal has been removed in the new design.
The bottom of the cup is designed to extend below the orifice. This design not only provides adequate stability for the cup when resting upright on a surface, but it also protects the orifice from damage. This protection is also closer to the orifice than in other designs.
The drip ring surrounding the top of the cup has been increased in volume to accommodate a greater amount of material. This change con minimize the frequency of cleaning or reduce spillage in long series of tests.
Pictured on the right is a cross section of the orifice used in both the Gardco Standard and the Gardco Ford Dip Cups. Note that the upper interior portion, following the conversion from the slope of the cup interior is spherical in shape rather than conical. It has been found that this shape provides a cleaner break of the stream as the cup empties. In addition, the length of the orifice is better defined in accordance with theory. The "0" orifice does not have this feature as it is longer and has less need of this shape.
In the new design the exterior of the brass orifice is a truncated cone, sized to match a conical section in the body of the cup. This design insures close fit with no gaps between the body and the orifice either at the top or bottom. This design also eliminates the hard to clean areas that exist in most other designs.
Standards
Procedure
It is helpful, and results will be more consistent, if all viscosity determinations are made in a room that is free from drafts or quick temperature change, and is within ±3°C (±5°F) of the viscosity measuring temperature of 25°C.
Ford Standard Cup
Ford Dip Cups
The Gardco Mini Dip Cups should have the same care as the Gardco Standard Series as they are produced to the same close tolerance. The use of the dip cup, however, is somewhat different:
Delivery Content
Instruction Manual and Grid Set provided with each cup. |
Accessories
Other Variations