Troubleshooting 4 to 20 mA process control systems without breaking the loop

Anyone who works in any kind of manufacturing plant knows that nothing can ruin a day faster than unscheduled downtime. The lost production time means lower output, which can have a sizable price tag. In a process plant that lost productivity can be magnified because an entire batch of a product could be ruined if the outage occurs at a critical point in the process.

Keeping processes up and running properly requires efficient and accurate troubleshooting tools. An instrument technician in the oil, gas, and chemical industry for the last 15 years knows that only too well. He’s responsible for maintaining and troubleshooting pressure, flow, temperature, and pH transmitters in a chemical processing plant. As you might expect, powering down the equipment is the option of last resort.