Fieldbus Cables
Fieldbus cable is rated according to a four-level code (A, B, C, or D), each successive letter representing a cable
Fieldbus Coupling Devices
In order to simplify the task of connecting Fieldbus devices to such a network segment, multiple manufacturers sell coupling devices
Foundation Fieldbus (FF) Segment Topology
A minimal FF H1 segment consists of a DC power supply, a “power conditioner,” exactly two terminator resistors (Note 1)
What is Foundation Fieldbus (FF) ?
To understand just how different FOUNDATION Fieldbus is from other digital instrument systems, consider a typical layout for a distributed
Saybolt Viscometer
SAYBOLT VISCOMETER A device used to measure the viscosity of a fluid. The saybolt viscometer controls the heat of the
Laser Doppler Anemometer
Doppler Effect is a method for measuring linear velocity. When a narrow laser beam ( or radio beam or ultrasonic
WirelessHART device Configuration
WirelessHART field instruments look much like their wired counterparts, with the obvious addition of an antenna. A WirelessHART Rosemount model
WirelessHART Network Gateway Device
The Network Gateway is a critically important component in a WirelessHART system. It is the sole channel through which all
WirelessHART Network Protocol
The OSI reference model will be used here to identify and describe various features of the WirelessHART protocol. Physical Layer
Interferometer Principle
The variation of refractive index of flowing gas with density is basic principle used in Interferometer. Interference of light waves is used for measurement