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Horizontal side (B1)
Horizontal top (B2)
Horizontal side (C)
Here is an overview
Vertical (A): This is the preferred location in terms of the control loop's lag time.
Horizontal side (B1): In this alternative you install the transmitter on the side of the line to prevent possible air from disturbing the measurement.
Horizontal top (B2): This method may be considered if the straight length of horizontal pipe is too short for alternative B1. Installation on the top side of the pipe always requires careful consideration, because a substantial buildup of air in the pipe may affect the measurement accuracy.
Horizontal side (C): You may consider this option when horizontal and vertical sections before the transmitter are too short. The double bend before the measurement point will cause problems when L' < L1. The whirling flow produced by the double bend has to be eliminated with FLOW TR. In addition, you have consider the control loop's lag time, which is considerably longer in this alternative than in alternative A.
Vertical (D): In this method you install the transmitter on the side of pipe bend's outer curve. Measurement lag is considerably longer than in alternative A.
F: If a valve that will not be continuously fully open has to be installed between pump and transmitter, the valve's axis must be parallel to the pump's axis to eliminate whirling flow. The valve manufacturer's specifications must be taken into account.
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