How do I get my conductivity readings
(E Machine) to match? My meter reads 14.0 My LED reads 14.0 but my readout in the svs box reads 15.0

on the E machine the svs box where it says Na+base and Na+ is adjustable and not a display, this is designed so the operator can set the "actual conductivity (sodium base)" so the machine knows where it's starting point is.It was supposed to allow for variations in individual equipment conductivity (due to bicarb strength, pump variations etc)So if the meter and LED display are matching that's what counts.