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Follower Arm Potentiometers


MAINTAIN CONSTANT TENSION - The follower arm potentiometer is used to maintain constant tension when using a brake for producing unwind (payout) tension, or when using a clutch for rewind tension.
Miniature model
for rolls up to 3" diameter
Aluminum cased model
for 3" dia. & larger rolls
Follower photo
MF-4-2
F-12-6
Unwind Follower Drawing

The arm rides on the roll, measuring the roll diameter. As the roll size decreases, the arm moves downward, rotating the potentiometer shaft. The power supply current automatically decreases, which decreases the brake (or clutch) torque to maintain constant tension.

Follower Drawing
Part Number :  F-12-6,       (12 inch arm,   6 foot cable)
Mini-Follower Drawing
Part Number :  MF-4-2,       (4 inch arm,   2 foot cable)
Specifications
MODEL F-12-6 (Aluminum Case) MF-4-2 (Miniature)
Resistance 500 ohm
Electrical Angle 65 degrees
Mechanical Angle 360 degrees (No stops)
Drag Torque 4 oz.-in. 1 oz.-in.
Overhung Load 20 lbs. 1 lb.

Connects to all Placid Industries open power supplies.
For enclosed supply, use part number: PS - (voltage) - MCF
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