Which practice helps minimize EMI susceptibility in sensor wiring?

Prepare for the OCC SACA Sensor Logic Systems 1 (C-205) Exam. Study with detailed questions and insightful explanations. Get ready for your certification!

EMI pickup is strongest when the signal and return paths form a large loop. Twisted pair wiring minimizes that loop area by pairing the signal and its return conductors and twisting them together, so any external field induces nearly equal voltages in both wires. A differential receiver then subtracts the two voltages, canceling most of the interference and leaving the true signal intact. Grounding adds a solid reference and a low-impedance path for stray currents to flow to earth, further reducing noise on the sensor line.

Seeing the other options helps, too. Long untwisted runs enlarge the loop and invite more EMI to be picked up. Avoiding shielding or using it poorly can leave the cable exposed to interference, whereas proper shielding can help if terminated correctly. Keeping power and signal cables in the same conduit mixes noise sources and can transfer power-line disturbances into the sensor signal, increasing susceptibility.