What does it mean that the sealing grade of the instrument’s secondary enclosure must meet the NE132 standard?
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What does it mean that the sealing grade of the instrument’s secondary enclosure must meet the NE132 standard?
NAMUR NE 132 – CORIOLIS MASS METER; your question likely refers to the pressure resistance of the flow meter’s secondary housing
Yes, it’s the secondary housing of the mass flow meter
I remember that the pressure rating of the secondary shell ranges from 5 BAR to 20 BAR, with varying values; the larger the diameter, the lower the pressure rating. You can check EMERSON/E+H for more details. . . These samples are from the low-end series, with secondary shells that are not pressure-rated. If the medium is an extremely hazardous gas, to prevent fatigue-induced cracking of the measurement tube, it is possible to measure the pressure in the secondary shell cavity; a PAH value indicates that there is a leak in the tube. I once used a carbon monoxide reaction mixer with a pressure of 40 BAR; that’s how the mass flow meter was set up.