DESCRIPTION:

The PSR-1 is a Light Sensitive Resistor that may be used as

an input to indicate the presence of light at the sensor

location. The PSR-1-T is a PSR-1 coupled with a B420-P

transmitter. The PSR-1-T produces a 4 - 20mA output

signal. The sensor is designed to be mounted in the end

of a weatherproof conduit box.

APPLICATION:

The PSR-1 has a resistance in darkness in excess of 1 M

and resistance in bright light of less than 1.5 k.

The PSR-1 and PSR-1-T indicate the presence or absence

of light. They should not be used for foot-candle control of

occupied spaces. The PSR-1-T is calibrated for 4mA in

bright light > 100 foot-candles and 20mA in darkness <

0.1 foot-candles.