What is SAMA symbol?
SAMA symbols are used to develop and convey the complex functional interworking of boiler control loops. The four most common control loops used in industry are temperature, pressure, level, and flow loops. Each of these loops is comprised of just three devices: a transmitter, controller, and control valve.
What is Sama standard?
SAMA diagrams are functional control diagrams used in process industries, mainly used to describe and document control strategies and systems designed for both industrial and utility boiler applications. The symbols are developed by Scientific Apparatus Makers Association (SAMA).
What are SAMA diagrams?
SAMA is an acronym of Scientific Apparatus Makers Association, in some plants, there has been greater adoption of SAMA diagrams which provide more detailed process diagrams which constitute various process symbols. SAMA drawings are sometimes referred to as “control functional diagrams”.
What is a SAMA diagram?
SAMA is an acronym standing for Scientific Apparatus Makers Association, referring to a unique form of diagram used primary in the power generation industry to document control strategies. SAMA diagrams may show varying degrees of detail about the control strategies they document.
What is a P&ID Loop?
P&IDs and loop diagrams are construction and documentation drawings that depict the flow of the process and illustrate the instrumentation control and measurement interactions, wiring and connections to the process. The process is illustrated in sections or subsystems of the process called loops.
What is ILD in instrumentation?
Instrument loop diagram (ILD) represents a connection from the field instrument to Control Room. ( vice versa) Instrument loop diagram is divided into two basic sections. One is the field side and other is Control Room side. ( vice versa)
Which is the best description of a SAMA diagram?
What is SAMA Diagram? SAMA is an acronym of Scientific Apparatus Makers Association, in some plants, there has been greater adoption of SAMA diagrams which provide more detailed process diagrams which constitute various process symbols. SAMA drawings are sometimes referred to as “control functional diagrams”.
Why are Sama symbols used in control systems?
Usually, SAMA symbols show the control system without reference to the processing equipment or piping details. Still, for complex control systems, because they can show greater functionality compared with other documentation formats, they are often preferred for presenting control strategy details in some industries.
What is boiler drum level in Sama diagram?
Boiler drum level is a critical process variable (PV) in the safe operation of a boiler. The below figure is a SAMA diagram of the cascade plus feedforward control application approach. The three transmitters are the three elements referred to in the name of the control system.