AMETEK 925 Linear Cable Reel Sensor - Manual (Page 2)

Principles of Operation
The Series 925 Linear Cable Reel can be used in any linear application up to 1200 inches.
The system consists of a heavy duty spring motor assembly attached to a precision
machined cable drum. As the cable is pulled off of the precision drum, the drum rotates
a shaft connected to it. This shaft is precisely geared such that the full number of
revolutions of the drum is equal to the appropriate number of revolutions required by
the chosen sensor.
Applications
The Series 925 can be used in any industrial application to monitor a linear or reciprocat-
ing machine motion.
The sensor package, along with the associated electronics (i.e. programmable logic control-
ler, programmable limit switch, counter card, etc.) can sense the position of any linear
motion and can, therefore, be used to control machines.
Advantages
This approach to machine positioning has several advantages over traditional limit
switches. In hostile environments, such as many steel mill applications, the cable reel
sensor can be mounted remotely. This protects the sensor from excessive heat, steam,
water, chemicals and physical damage. In addition, mounting alignment is not critical
in that the cable can be mis-aligned somewhat without harm, thus saving installation
time. The variety of sensors available allows the system to be easily integrated to existing
machine controls.