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
Hydrolases, nucleic acids encoding them and methods for making and using them
Electronic device package and fabrication method thereof
Semiconductor device and method of manufacturing the same
Methods of forming semiconductor devices having diffusion regions of reduced width
Cosmetic/dermatological compositions comprising naphthoic acid compounds and polyurethane polymers
Non-intrusive processor tracing
Electronic document reading devices
  Randomly Featured Patents
Holster holder device
Club head sets with varying characteristics and related methods
Bottle
Thermoelectric temperature controlled drawer assembly
Vehicle control apparatus for front and rear drive ratio on the basis of operator's desired vehicle drive force and static and dynamic vehicle states
Reinforced plastic pipe
Paper web threading apparatus for rotary printing presses
High speed bus interface for non-volatile integrated circuit memory supporting continuous transfer
Recyclable ruthenium catalysts for metathesis reactions
Edge-reinforced packing for use in steam service