gumball
Member
I'm relatively new to working with plc's and I need some help.
We need to run a fatigue test on a length of pipe and it will be controlled by input from a strain gauge. We're going to flex the pipe up and down and measure longitudinal strain.
The strain gauge will be conditioned to a 4-20mA signal into our plc's analog input card. My idea for scaling was to set my low cal value being zero force on the pipe and, using a dial indicator located near the strain gauge, flex the pipe a known distance and use that as my high cal value. The dial indicator is traceable. Would this then give me traceable strain values? Thanks for any input.
We need to run a fatigue test on a length of pipe and it will be controlled by input from a strain gauge. We're going to flex the pipe up and down and measure longitudinal strain.
The strain gauge will be conditioned to a 4-20mA signal into our plc's analog input card. My idea for scaling was to set my low cal value being zero force on the pipe and, using a dial indicator located near the strain gauge, flex the pipe a known distance and use that as my high cal value. The dial indicator is traceable. Would this then give me traceable strain values? Thanks for any input.