Azbil Corporation Installation
MagneW FLEX+/PLUS+ Electromagnetic Flowmeter Detector 2-7
2.4.1: Determining the fastening torque
The following table shows the fastening torque for each pipe bore.
CAUTION
The correct fastening torque must be used to prevent leakage. To avoid damage to
the detector, do not exceed the listed fastening torque.
Table 2-1 Fastening torque for wafer detectors
Nominal detector bore diameter
mm (inch)
Fastening torque
N•m (ft•lb)
2.5 - 15 (0.1 - 3/8) 13 - 18 (9.6 -13.3)
25 (1) 20 - 30 (14.8 - 22.1)
40 - 80 (1½ - 3.1) 30 - 50 (22.1 - 36.9)
100 (4) 50-70 (36.9 - 51.6)
125 - 150 (5 - 6) 80 -100 (59.0 - 73.8)
200 (4) 90 -100 (66.4 - 73.8)
2.4.2: Selecting the ange shape
The anges used for installation should maximize the area of contact with the gasket.
(The liquid could leak because of the
small area of contact with the gasket.)
O Acceptable X Unacceptable
Flange
Welding
Pipe
Welding
Figure 2-6 Flange Shapes
CAUTION
Before installing the detector, make sure that the pipe is exactly straight and
centered. Any irregularity could cause leakage or other hazards.