A sensor is an input device that provides a usable output in response to the input measurand. A sensor is…
Transmitters are available with a wide variety of signal outputs. The 4-20mA analogue signal is by far the most commonly…
Do you know about Loop Check of 4-20mA or HART Transmitters or Instruments Loop check procedure ? This article provides the…
We discuss concepts of Sink or Source used in electrical circuits or in PLC wiring. Also we deal with basics…
The basic layout of every 4-20mA loop consists of a power supply, a transmitter, and passive loop devices. The supply…
What is an O-Ring? An O-ring is a torus, or doughnut-shaped ring, generally molded from an elastomer, although O-rings are…
Guide lines to be followed in Field during DCS Field Loop Checks (with P&ID) and step by step procedure to…
Basic Guidelines to be followed during Logic Checks (Follow Cause & Effect, Control Narrative, P&ID and Latest Alarm & Trip…
Process Control In almost all industrial process applications, control of process variables is critical to the safe and efficient operation…
4-20mA current-loop circuit have four individual elements: a sensor/transducer, a voltage-to-current converter, loop power supply and a receiver / monitor.
