Cooper AP 30001 User Manual

Dynamometers

Installation and Operation Guide

Cooper Mechanical Dynamometers are designed are designed to measure tension forces and weight.
CAUTION: Cooper Dynamometers are not designed for measurement of dynamic shock loads and should not be

subjected to sudden torque force. Load or weight should be applied in a gradu al manner to avoid damaging the
dynamometer. Torque loads applied to the dynamometer should be relieved or avoided.

Heavy-duty needle bearings inserted in each end of the dynamometer deflection beam (or into both sides of the shackl e
ears) allow the shackle pin rotate as force is applied. Bearings should be cleaned periodically in a suitable solvent. After
drying, the bearings should be treated with a coat of light machine oil. DO NOT allow oil to run into the mechanism case.
The mechanism should never be oiled, as this tends to attract dust or dirt.

Drain holes have provided in the bottom of the mechanism case. If the dynamometer should be accidentally immersed,
hold it so that water is free to run out through these holes and allowed to dry.

Cooper supplies shackles and pins with the dynamometers that have been confirmed to pro perly work with our
mechanical dynamometers. Do not use shackles or shackle pins that have not been qualified by Cooper Instruments.
Lower profile non-machined spots can often be observed and are normal.

If any type of accessory fitting is made for use with the dynamometer, be sure to machine this from high grade aircraft
alloy and heat treat it in order to ensure maximum safety.

NOTE: Cooper is not responsible for failure of attachment fittings furnished by others.
Zero the dynamometer for best accuracy. To properly zero the instrument when using the max pointer, adjust the black

needle below the desired tare point using the zero adjustment wheel on the rear of the case. Move the red maximum
pointer counterclockwise until it contacts the black needle. Use the zero adjustment wheel to simultaneously move both
pointers to the desired tare point. This procedure will prevent the slight drag of the max pointer from influencing the
displayed reading. If the max pointer is not required, rotate the red pointer clockwise until it reached the zero position and
operate normally.

WARNING: Failure to adjust the max hand prior to use of the dynamometer WILL affect the readings if the max hand is
used.

Cooper dynamometers permit zeroing of up to 20% of instrument capacity. Do not zero off a deadload and then use the
instrument to capacity.

The Cooper Dynamometer is a precision instrument and will provide many years of dependable se rvice if given
reasonable care and suitable protection. Many firms make it a regular practice to return Dynamometers to their
distributors at 6 to 8 months intervals (depending upon how much they are used) to have accuracy recertified. We
recommend this at least once a year.

CF100 March 2010