Abstract: A thermally responsive electrical control device is operable for producing a control signal having first and second voltage levels for controlling the operation of a system actuating device for first and second modes of operation. One embodiment of the device includes a multiple bridge circuit for sensing two temperatures and for making multiple control decisions in response to the two temperatures. Another embodiment of the device includes a thermistor and a nonlinear variable resistance element which is matched in a substantially linear relation with the thermistor for compensating for the inherent substantially nonlinear character of the thermistor. Still another embodiment of the device includes a monitoring circuit which is interconnected to a bridge circuit of the device for providing visual indications of sensed temperatures without significantly interrupting the control function of the device.

Abstract: A press management and analysis system, embodies a press console (PMA), one for each press, which is located adjacent the press, and communicating with a remote entry computer (REC). The PMA monitors sensor devices on the press, to follow press operation from the beginning of a job assignment through makeready operations and printing operations to completion.A REC console remote from the press room, as in the production manager's office, communicates with each PMA, and recording (filing), hard copy printing, and like functions are handled at the REC console. The system provides displays requiring completion by the pressman/operator (or manager) thus soliciting information as well as informing all concerned of job progress, of standard times expected for a job, and of transfer from one mode or phase of the job, as from makeready time to run time in which good product is printed. The system feeds back and records event messages, and encourages operator input and identification of stoppage reasons, etc.