Problems with wedge flow meters
Thread Content
There is currently a wedge flow meter; due to the damage caused to the positive-pressure diaphragm box, both the positive- and negative-pressure diaphragm boxes have been set to zero pressure, and they are at the same level. When connected using a manual controller, it shows a pressure of +0.82 Kpa. The gauge range is 0-10 KPa; does it need to be changed to 0.82-10.82 KPa now?
There is currently a wedge flow meter; due to the damage caused to the positive-pressure diaphragm box, both the positive- and negative-pressure diaphragm boxes have been set to zero pressure, and they are at the same level. When connected using a manual controller, it shows a pressure of +0.82 Kpa. The gauge range is 0-10 KPa; does it need to be changed to 0.82-10.82 KPa now?
There is a wedge flow meter; due to improper installation, the positive-pressure diaphragm bag was damaged. Both the positive- and negative-pressure diaphragm bags were set to zero pressure and placed at the same level. When connected using a manual controller, it showed a pressure reading of +0.82 Kpa. The gauge range is 0-10 KPa; does it need to be changed to 0.82-10.82 KPa now?
Sure, but the range needs to be calibrated; usually, a water column is used to adjust the middle range. Zero calibration is also possible. Check whether the voltage transformation setting has a square root applied to it.