The post AutoQuiz: What Is the Purpose of an Intrinsic Safety Barrier? first appeared on the ISA Interchange blog site.
Today’s automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for more information about the CCST program.
a) provide a physical obstruction between the hazardous and non-hazardous areas
b) establish a central grounding point in the hazardous area
c) prevent excess voltage and current from reaching the hazardous area
d) increase the resistance in the circuit to reduce the risk of explosion
e) none of the above
Source: ISA News