Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2005-05-17
2005-05-17
Paschall, Mark (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S483000, C219S486000, C219S494000, C219S508000, C307S041000
Reexamination Certificate
active
06894254
ABSTRACT:
A heater control system that utilizes electronic temperature control at each of a number of interconnected heaters is provided for monitoring and operating heaters within a narrow temperature range. In one embodiment, a heater control system is provided that is adapted for controlling a number of heaters positioned on pipe and components of a piping system from a remote location. The heater control system includes satellite controllers mounted on each heater connected daisy chain fashion and includes a monitoring station with a user interface for allowing a user to monitor and to remotely control the operating status or temperature of each heater in the heater control system. To satisfy the user's space requirements, the size of each controller is maintained at a small form factor and a single cord is used to provide power and communications lines to and between the controllers. Each controller integrates power supply and control with electronic temperature control to minimize the use of mechanical switching and to increase the accuracy of temperature control. The temperature set point is adjustable at each controller and, in one embodiment, the temperature set point is remotely adjustable from a remote monitoring station. The operating status of each controller is displayed on the exterior of the controller's housing and in one embodiment, the operating status, such as temperature, is displayed at a base station for each line of controllers and heaters and on a user interface monitor at a monitoring station.
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Cochran Freund & Young LLC
MKS Instruments Inc.
Paschall Mark
Young James R.
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