Determining And Marking The Second Nozzle Location - GE T9 Installation Manual

2.4 Determining and Marking the Second Nozzle Location

1. The position for the second nozzle is a distance equal to one pipe diameter along the pipe and located on the
opposite side of the pipe (i.e., 180
2. Due to the possible variation in outside diameter of the pipe, measure the outside diameter of the pipe at four
locations between the nozzle centers. Calculate the average outside diameter based on these measurements.
3. Using a roll of polyester film (or equivalent), cut a strip of film at the width and length as follows:
IMPORTANT:
Ensure that the sides of the film are cut parallel to each other.
•
Width - equal to the average outside diameter calculated in Step 1 above.
•
Length - equal to 4 times the outside diameter of the pipe.
Model T9 Ultrasonic Flow Transducer Installation Guide
°
around). Spray this area with a marking dye product.
D1 D2
Average
O.D.
D3 D4
Side View
4 X O.D.
Chapter 2. Installing Pipe Nozzles
7