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TT-100

Description

TT-100 Tach Tape provides speed and frequency measurements from a magnetic pickup when only a smooth shaft or wheel is available. Tach Tape is a slotted, 1-inch (2.54 cm) wide, 1/16 inch (0.16 cm) thick strip of flexible magnetic polymer. Pressure sensitive adhesive on back side allows fastening to a smooth shaft. 
Minimum shaft diameter: 2 inches (5.08 cm). 

To determine length required:

Step 1: 2 x 3.14 x (half the diameter of the shaft in inches) + 2 inches for setup overlap.

Step 2: Determine the number of discontinuities: (length - 2 inch overlap) divided by 0.45.

 

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Features

TT-100™ Dynalco Tach Tape is a strip of flexible magnetic polymer backed with a pressure sensitive adhesive. This adhesive adheres to a wide variety of surfaces, including most plastics and metals.

Because of its unique magnetization and arrangement of slots, a series of alternate magnetic poles is generated along the length of the tape. A Dynalco magnetic pickup becomes activated when placed perpendicular to the moving tape surface.

Figure 1 (next page) demonstrates that the Tach Tape performance is better than an 8-pitch gear when the air gap is larger than 0.050 inch (0.127 cm). This is especially welcome in cases where a small air gap is difficult to maintain, or space is too restricted to install split gears.