Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Variable power control for process control instruments










Image Number 8 for United States Patent #6686831.

A process control instrument includes a sensor/actuator portion and a transmitter portion connected to the sensor/actuator portion. The transmitter portion is operable to communicate with other process variable transmitters through a communication network. The transmitter includes a processing module and a power module operable to generate a power output supplied to at least the transmitter portion, wherein the power module is operable to adjust the power output based on a power control signal. Moreover, the power control signal may be generated by a controller device remote from the process control instrument and communicated to the process control instrument over the communication network. Additionally, the power module includes a power control module for adjusting the power output. This power control module includes an amplitude limiter operable to limit a power input to the process control instrument according to a controllable amplitude limit, and a power rate of change unit operable to limit a rate of change of the power input to the process control instrument according to a controllable adjustment rate limit.








 
 
  Recently Added Patents
Controlling a video window position relative to a video camera position
Label printer
Remedy for overactive bladder comprising acetic acid anilide derivative as the active ingredient
Solid-state imaging device
Server chassis
Method and apparatus for linking a web browser link to a promotional offer
Method and system for providing complete internet anywhere with partial server processing
  Randomly Featured Patents
Method for processing a silver halide photographic material
System and method for compensating polarization-dependent sensitivity of dispersive optics in a rotating analyzer ellipsometer system
Method of transmitting data using repetition coding
Synthetic fused silica member
Ophthalmoscope with automatic lens shifting mechanism
Hose clamp
Bottom rail of a venetian blind assembly
Magnetic locker for spectacle frame
Chamber structure for vehicle
High and medium performance tire for vehicles