Abstract: Some embodiments provide an interface unit interfacing with an irrigation controller, comprising: a housing; a controller configured to instruct an interruption of a watering schedule executed by the irrigation controller, the interruption based on one or both of sensed temperature and sensed rainfall amount, and based on one or both of user entered temperature and rainfall threshold parameters; a switching device coupled with the controller, and configured to cause the interruption in response to signaling from the controller; and a user interface comprising: a plurality of user input devices configured to provide signaling to the controller based upon user's engagement, and configured to allow the user to define the temperature and rainfall threshold parameters; and a user display comprising a display screen; wherein the controller is configured to cause the display screen to display a plurality of pictorial representations that in combination convey whether irrigation is being interrupted.

Abstract: A system and method for monitoring the tension loading of a conveyor chain (12) utilizing a transducer (22) that is mounted on the chain to travel therewith and generate an electrical signal based on the tension of the chain (12) and a data logger (60) mounted on the chain for converting the electrical signal into tension data for storage in a memory (132) of the logger on the chain. The system also includes an infrared transmitter (146 ) for generating a position signal representing a predetermined position of the chain (12). The method utilizes the data logger (60) and involves mounting the logger on the chain and placing the chain under tension. The method further involves generating an electrical signal based on the tension of the chain, converting the electrical signal into tension data and storing the tension data in the memory on the chain.