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A Pt100 RTD generates approximately 109.7 Ω. What is the temperature? A. 25°C
B. 35°C
C. 50°C
D. 65°C ▶ View Answer Explanation: For approximate Pt100 calculations, use: Where: R = Measured resistance = 109.7 Ω R₀ = 100 Ω α = 0.00385 /°C …

Another common electrical pressure sensor design works on the principle of differential capacitance. In this design, the sensing element is a taut metal diaphragm located equidistant between two stationary metal surfaces, comprising three plates for a complementary…

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A Pt100 transmitter shows 200 deg C. What is the approximate resistance? A. 165.8 Ω B. 185.8 Ω
C. 175.8 Ω D. 195.8 Ω ▶ View Answer Explanation: A Pt100 RTD has a resistance of 100 Ω at 0°C. As temperature increases, its resistance increases according…

Learn how TON and TOFF timers work in PLC programming with practical ladder logic examples and automation applications.

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A very common technique in industrial instrumentation is to calculate the value of a process variable from the values of related variables which are easier to measure (Note 1 ) . As it so happens, there are a host of variables which one may infer from readings…

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Learn a new instruction that can be used to communicate and transferring data across PLC systems using TSEND_C and TRCV_C blocks.

NDIR gas analyzers employ the principle of spectrographic absorption to measure how much of a particular substance exists within a sample.

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Study the PLC programming example on LED control using the ladder logic diagram and learn the program description.