Replaced by the LPN-LUX - Light Intensity Transmitter.
The TWN-LUX incorporates a silicon photodiode light sensor, in a hermetical sealed case, especially designed for high precision linear applications. The sensor has a flat glass window with a built in colour correction filter, giving an approximation to the spectral response in the human eye.
As an aid in adjustment an LED is mounted next to the sensor, with a gradual turn on at approx. 30% FSO.
|Input||Adjustable from 1~1000lux Nominal.|
|Turn Trimpot fully Clockwise = 0~10lux Nominal.|
|Turn Trimpot fully Anticlockwise = 0~1000lux Nominal.|
|(Note: Trimpot requires 25 turns to go from one end to the other.)|
|Output Impedance = 1kΩ.|
|(Note: With a 12Vdc power supply output may only rise within approx 95% FSO.)|
|-Current||4~20mA, 3 wire.|
|Maximum Load = 300Ω @ 12Vdc.|
|Maximum Load = 900Ω @ 24Vdc.|
|Current Draw||-Voltage||Output 20mA @ 24Vdc P/S with 10Vdc out.|
|-Current||Output 40mA @ 24Vdc P/S with 20mA out.|
|Operating Humidity||5~85%RH Max. Non-Condensing.|