Panametrics T17, Руководство по установке, Страница: 34 / 76

Chapter 2. Installing Pipe Nozzles
22 Model T17 Installation Guide
2.3.2 Selecting and Marking the First Nozzle Location, Non-Diametrical, Mid-Radius (cont.)
6. Spray this area with a marking dye product. Using a metal edge, scribe 6” long vertical and a horizontal lines that
intersect at the center punch mark.
2.3.3 Determining and Marking the Second Nozzle Location, Non-Diametrical, Mid-Radius
1. The position for the second nozzle is typically a distance equal to
S
along the pipe and located on the other side
of the pipe. For installation other than 45°, the distance is equal to
S
times the tangent of the installation angle.
Steps 2 to 7 on the following pages are for the second nozzle located at 45° from the first nozzle.
IMPORTANT: Follow the convention as depicted in the Top View above. While looking down onto the header pipe, with
the flow direction from left to right, the second nozzle should be always located to the right of the first
nozzle and the top reference point. The nozzles cannot be mounted on the header pipe if they are
located, by mistake, at the mirror image to this convention.
Top
Reference
Point
S
S tan
(= S, when = 45 )
Top Reference Point
Top view
First Nozzle Location
Second Nozzle Location
Flow Direction