Hi folks,
From time to time, I face with problem when dealing with a DP transmitter set up to measure the differential pressure of two distant points. Recently, we have installed a DP transmitter to measure the differential pressure of two points on a long tower. The distance between tapping points and the transmitter’s manifold is nearly 40 meters and we have installed a long run of tubing to connect the manifold to the tapping points. The measurement error is substantial.
It is also not possible to use capillary type DP transmitter due to the capillary length limitation. We cannot even use two pressure transmitters and calculate their difference because the operating pressure of the tower is high and the desired DP is small so if we use two pressure transmitters and calculate the DP, the resulting measurement is still erroneous.
Any hint?
Best Regards,
Abdolazim Hasseli
From time to time, I face with problem when dealing with a DP transmitter set up to measure the differential pressure of two distant points. Recently, we have installed a DP transmitter to measure the differential pressure of two points on a long tower. The distance between tapping points and the transmitter’s manifold is nearly 40 meters and we have installed a long run of tubing to connect the manifold to the tapping points. The measurement error is substantial.
It is also not possible to use capillary type DP transmitter due to the capillary length limitation. We cannot even use two pressure transmitters and calculate their difference because the operating pressure of the tower is high and the desired DP is small so if we use two pressure transmitters and calculate the DP, the resulting measurement is still erroneous.
Any hint?
Best Regards,
Abdolazim Hasseli