EES-401 Series Ultrasonic Energy Meter
Revision: 3.0.1
Page 65 of 90
transducer vertically at that position on the pipe surface. ( When the Energy Meter need to be hot-tapped into the
pipe under pressure without flow interruption,please refer to the Standard operation construction of DDK electric
Hot-tapping or corresponding equipment. )
2.Tighten the ball valve securely onto the mounting base ( shut off the ball valve ).
3.Unscrew the locating sleeve and loosen the lock ring, retract the transducer into the joint nut, and then tighten
the joint nut onto the ball valve.
4.Open the ball valve and insert the transducer into the pipe. At the same time, measure the dimension between
the outside pipe and the A point (See Figure 2) and make sure it complies with the following formula:
H
＝
237 - d
In this formula:
H is Mounting height (mm)
237 is Transducer length (mm)
d is Pipe wall thickness (mm)
5.Attach the lock ring to the joint nut by fitting its pinhole in the locating pin, then tighten the screw slightly and
turn the orientation handle until it points at the middle position between the two transducers and its axes matches
the axes of the pipeline. Finally, tighten the locking screw and screw the locating sleeve onto the joint nut.
6.Connect the transducer cables to the corresponding upstream/downstream (upstream=red, downstream=blue)
terminal ends.
Important
For horizontal pipelines, transducers must be fixed on the sides of the pipe ( i.e. at the 3 and 9
o
’
clock position of the pipe ) to prevent signal attenuation caused by sediment on the bottom of
the pipe or air bubbles and air pockets in the top of the pipe.
12.4
WH Type Insertion Transducer Pipe Parameter Entry Shortcuts
For example, measuring the diameter of DN200, pipe outside diameter is 219mm, pipe wall thickness is 6mm,
pipe inner diameter is 207mm, measuring medium is water, and material is carbon steel, no liner, can be operated
as follows:
Step1. Pipe outside diameter:
Press
keys to enter the window
M11 and enter the pipe outside diameter, and then press
key to confirm.
( For insertion transducer, M11 menu need to be
entered the pipe inner diameter )
Step2. Pipe wall thickness
Press
key to enter the window
M12, and enter the pipe wall thickness, and press
key to confirm.
(The Wall Thickness needs to be 0.01mm for use with
insertion sensors.)
Pipe Outer Diameter
207.00 mm
Pipe Wall Thickness
0.01 mm