The photocell PR1a is a masterpiece of precision and power in a small package.

The transmitter of the photocell sends a modulated infrared beam. The receiver checks the infrared beam and makes an impulse for each interruption.

To use the photocell universally it is possible to switch between 3 different functions: Reflection-Photocell, Photocell Transmitter and Photocell Receiver.

PR1a-R-03

Photocell PR1a:

  • Impulse accuracy up to 1/10,000 seconds
  • Different functions with one photocell:
    – Refection-Photocell with Reflector
    – Separate Transmitter-Unit and Receiver-Unit for long distance use
  • Long distance range
    – Reflection-Photocell about 25 m
    – Through-Beam-Photocell over 150 m (500 feet)
  • Variable power supply for the photocell
    – Battery operation
    – Power supply from ALGE-timing device
    – External power supply from 4 to 18 VDC
  • Battery indication with LED (green, yellow, red)
  • Indication of photocell adjustment with LED (green, yellow, red)
  • Synchronisation of two photocells (main and backup) to prevent interference
  • Adjustment of delay time (20 ms to 2 seconds (factory adjustment = 20 ms)

Photocell PR1aW:

  • Built in radio module for wireless impulse transmition, as well as cable.
  • Impulse accuracy up to 1/10,000 seconds
  • Different functions with one photocell:
    – Refection-Photocell with Reflector
    – Separate Transmitter-Unit and Receiver-Unit for long distance use
  • Long distance range
    – Reflection-Photocell about 25 m
    – Through-Beam-Photocell over 150 m (500 feet)
  • Variable power supply for the photocell
    – Battery operation
    – Power supply from ALGE-timing device
    – External power supply from 4 to 18 VDC
  • Battery indication with LED (green, yellow, red)
  • Indication of photocell adjustment with LED (green, yellow, red)
  • Synchronisation of two photocells (main and backup) to prevent interference
  • Adjustment of delay time (20 ms to 2 seconds (factory adjustment = 20 ms)
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