DTR With Spring Motor Drive

The Drying Time Recorder utilizes a spring wound motor capable of withstanding temperatures up to 500°F. The motor is encased in a metal housing supported by three legs.

An armature extends vertically from the motor shaft and is attached to a horizontal counter balanced arm. At one end of the arm is a teflon ball stylus that extends downward to the surface. At the opposite end of the arm is a counter-weight that can be adjusted to balance the arm. A 12 gram weight is supplied to be mounted on top of the ball stylus shaft. The weight load on the ball can be adjusted by the operator so that results will closely coincide with the finger touch method of determining drying time.

Rewind the clock mechanism using the clock key provided. The winding post protrudes through the chart nut and can be wound before or after replacing the chart. Fully wind the clock spring with approximately 10 turns of the key (180 degree rotation each turn) for the 1-hour clock.

DO NOT OVERWIND THE MAINSPRING.

Rewind the clock mechanism using the clock key provided. The winding post protrudes through the chart nut and can be wound before or after replacing the chart. Fully wind the clock spring with approximately 3 to 5 turns of the key (180 degree rotation each turn) for the 24-hour clock.

DO NOT OVERWIND THE MAINSPRING.