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we install a new DP transmitter for Natural Gas measurement.
flow is 400m3/hr., line size: 4 inch
we use 2 inch DP reduce line size 2 inch.
DP max.design: 5500mmwc
orifice: 30.52mm bore.
we face problem that dp always shows high dp pressure (6500mmwc) when no flow or flow passes through line.
the line pressure is 4 kg/cm2. when line pressure we reduce 0, dp shows zero.
flow is 400m3/hr., line size: 4 inch
we use 2 inch DP reduce line size 2 inch.
DP max.design: 5500mmwc
orifice: 30.52mm bore.
we face problem that dp always shows high dp pressure (6500mmwc) when no flow or flow passes through line.
the line pressure is 4 kg/cm2. when line pressure we reduce 0, dp shows zero.