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Photostat
Photostat controls are used to operate equipment based on a light intensity set point and light sensor read-
ing. A setpoint determines the target light intensity and a "deadband" determines the allowed drift from the
target before activating the photostat. When the light intensity returns to the target the photostat is de-
activated.
Example uses:
• Activate fans with high sunlight for pre-emtpive cooling
• Alarms
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2
3
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1. Mode
High Light:
Low Light:
2. Sensor
Light sensor input to evaluate the set point against.
3. Setpoint
The target sensor value to achieve.
4. Deadband
The allowed drift from the target before activating the function.
5. Preview
A preview of the function settings.
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Function activates when light intensity exceeds setpoint.
Function activates when light intensity is below setpoint.
© Agrowtek Inc. | www.agrowtek.com | Technology to Help You Grow™
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