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
Measuring device and measuring method that use pulsed electromagnetic wave
Flexure with insulating layer isolating a portion of a metal substrate
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
Compositions and methods of vascular injury repair
Vending machine
Under bump passive components in wafer level packaging
Method of operating an election ballot printing system
  Randomly Featured Patents
Paper having a melt-stable lactide polymer coating and process for manufacture thereof
RF remote appliance control/monitoring system
Impact resistant polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers
Snubber monitoring system for nuclear power plants
Apparatus for automatically controlling operation of the throttle assembly of a motor vehicle engine system during operation of power take-off equipment
Head of train device
Sheet material supplying apparatus
Ice skate blade
Handheld diagnostic device with renewable biosensor
Method for knowledge acquisition for diagnostic bayesian networks