We received a DP transmitter to measure flow :
process data : ambient conditions- 32degF to 122 deg F
process flud - natural gas, normal/Max pressure-1350/1400
differential pressure- 3 to 4
temperaure normal/max/design - 93.2 /100/-50 to 130 DEG F
Flow rate min/normal/max (lb/hr) - 13552/70480/77528
instrument Data :
Instrument range: 0 to 250 Inches H2O
calibration range : 0 to 150 inches H2O
Temperature range: -50 to 130 Deg F
over range protection is 130%
static pressure range : 2000 psig
pressure element : integral diaphram
Material is received as per the above data but my doubt is instrument range is saying 0 to 250 Incehs H2O which equals to 9.03 psig.But the normal ressure applies on the upstream is 1350 psi ( as per process data). 1350 psi = 37368.92 inches of water
mean to say, instrument range is only : 0 to 250 Inches H2O but normal pressure is more than that.as per me which is wrong
Can any one help me . i will be gratefull to him.
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