Regarding the range issue of diaphragm double-flange transmitters
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I have a relatively simple question: does anyone know what the lower limit of the measurement range is for diaphragm-type differential pressure transmitters? ? I see that on most of the sample selections, the lower limit of the range is around 6 KPa. Does no signal appear when the pressure difference drops below 6 KPa? Can’t guarantee the accuracy still? Seek answers from professionals
There’s no way around it :L It’s like how the existence of a species must have some purpose. Sometimes, when measuring dirty media, only double-flange transmitters are used. I also hope there’s a better alternative. I want to know now whether the differential pressure at which the measurement stops is indeed 6 Kpa; if it’s lower than that, does that really mean there is no signal anymore, or that there is no accurate reference value?
The temperature difference isn’t a big issue; as long as the two capillaries have the same length and are in the same environment, it can be balanced out； As for slow conduction, one reason is that the surface area in contact with the medium needs to be large enough; a flat diaphragm of two inches is required to ensure accuracy ； Secondly, the inner diameter of the yarn tube should be small; we haven’t encountered any significant errors in actual use
It’s said very bluntly, but it’s explained clearly. Thank you:lol