Plant Growth Environmental Chambers Application An OEM of plant growth chambers was looking to simplify their chamber designs. Their goal was to reduce manufacturing costs and improve product reliability and usability. Design Requirements Most chambers have different settings to simulate day and night conditions. These can include temperature set points, RH set points and lighting control. The OEM was using an analog controller with two set points. A mechanical timer selects which set point is connected to the controller and the indicator shows the actual chamber temperature. Two separate bulb and cap thermostats are also utilizes for high and low alarms. Solution To simplify the system design, Watlow ® specified a custom design by combining many features into one controller. The controll

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