URL/span ratio for level instrumentation
URL/span ratio for level instrumentation
(OP)
Hello,
i've done some uncertainty calculation for our plant level and pressure instrumentation (Westinghouse 2 loop PWR) and level uncertainties are pretty high. main reason is because upper-range limit for dp transmitters is high (750 inch of water) compared to calibrated span, which is about 5 times smaller. Did any of you have simillar problems, what is URL and span for your SG/PRZR level instrumentation?
i've done some uncertainty calculation for our plant level and pressure instrumentation (Westinghouse 2 loop PWR) and level uncertainties are pretty high. main reason is because upper-range limit for dp transmitters is high (750 inch of water) compared to calibrated span, which is about 5 times smaller. Did any of you have simillar problems, what is URL and span for your SG/PRZR level instrumentation?




