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- Automation
Characteristics of 4-20mA signal
The 4-20 mA pattern can be characterized by the current loop used for the interconnection of the field devices. In…
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How to convert mA signal into % in instruments?(ie 4-20 mA=0 to100%)
Example calculation: controller output to valve An electronic loop controller outputs a signal of 8.55 mA to a direct-responding control…
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How to Troubleshooting 4 -20 mA Current Loops with Loop Calibrator?
Introduction Special-purpose electronic test instruments called loop calibrators are manufactured for the express purpose of 4-20 mA current loop circuit troubleshooting. These…
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4 Factors affecting inductance
There are four basic factors of inductor construction determining the amount of inductance created. These factors all dictate inductance by…
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Fisher 546 I/P electro-pneumatic transducer
What is I/P converter? I/P converter is a device that converts the current signal into a pneumatic signal. For the…
Read More » - Instrumentation Questions
43 TOP PIPING/INSTRUMENTATION INTERVIEW QUESTIONS
Hey guys without any further a due Here are the 43 interview questions about Piping/instrumentation 1.What are instrument categories? Ans:…
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Difference between 2 wire & 4 wire transmitter current loops
The current loop uses DC power because the magnitude of the current represents the signal level that is being transmitted.…
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How a 4-20 mA current loop works
How a current loop works A typical 4-20 mA current loop circuit is composed of four individual elements: a sensor…
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What is a 4-20 mA Current Loop?
Introduction Before the age of electronic circuitry the whole process is controlled by mechanically.Facilities used pneumatic control signals where controllers were…
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