/industries/chemical/b/chemical-blog/posts/quad-flow-meter-design-addresses-both-safety-concerns-and-process-controlIf a trip to the doctor for a routine checkup resulted in a call for a drastic and costly medical procedure, there would be a legitimate reason to request a second opinion. If we apply the same concept to a major process unit in a refinery or chemicalen-USTelligent Community 13