31510 Photoelectric Edge Guide Sensor
- High Sensitivity: Detects better than.005 inches of lateral web
- High Accuracy: Maximum gain over a proportioned range plus
high speed response with stability from hydraulic
controller, provides the most accurate edge guide
- Extreme Versatility: Sensor can provide signal for Dynaguide Controller
or Webguide Controller
- Simplified Installation: Pre-wired sensor requires only connections to
controller. Compact size allows installation in confined areas
The Model 31510 Edge Guide Sensor is designed primarily for photoelectrically sensing the lateral edge position of materials in motion, in particular web material of an opaque quality. This information is transmitted electrically to a
hydraulic controller for final control action.
The Model 31510 is available in two basic model options.
One is used exclusively with the Dynaguide* Hydraulic
Controller and has an integral transistorized amplifier.
The second option can be used with the model 33130
Principle of Operation
The Model 31510 (used with Dynaguide) continuously
senses the web edge position with a light beam directed at
a photo-conductive cell, whose resistance is inversely
proportional to the amount of light falling on its surface.
This resistance varies with the lateral position of the web
edge. The change in resistance controls the input voltage
signal to the transistorized amplifier. The amplifier provides
an output voltage (in direct proportion to the later edge
position of the web) to the moving coil of the Dynaguide
Controller, which in turn provides hydraulic power to the
final control element.
The sensor option used with the Webguide Controller uses
a silicon photo voltaic cell operated in the short-circuit
mode. Its output current is proportional to the lateral web
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