Instructions for Use
– SCHMIDT
®
Flow Sensor SS 20.700
Page 14
Mounting with compression fitting
The compression fitting is mounted using its external thread (G½ or R½).
Typically, a bushing (sleeve) is welded as a fitting onto a bore in the me-
dium-guiding system wall. In most applications, latter are pipes which are
taken as an example for description of the mounting procedure below (de-
tails see Figure 3-5).
Figure 3-5
L
Probe length [mm]
D
O
Outer diameter of pipe [mm]
SL
Length of weld-in sleeve [mm]
E
Sensor tube setting length [mm]
AL
Projecting length [mm]
R
Reference length [mm]
Installation process:
Depressurize the system for measurements with overpressure
media and mount the pressure protection kit.
Drill a mounting bore in pipe wall.
Weld pipe sleeve with an internal thread G½ or R½ on to the pipe, in
the center above the mounting bore.
Recommended length of sleeve: 15 ... 40 mm
Plug holding bracket of pressure protection chain into thread of the
compression fitting.
Screw threaded part of compression fitting tightly into the pipe sleeve
(hexagon AF27).
Observe correct seat and alignment of chain bracket.
Check if there is an O-ring seal available and if it is fitted tightly.
Unscrew spigot nut of compression fitting so that the sensor probe can
be inserted without jamming.
Remove protective cap from sensor head. Carefully insert sensor into
the duct of the compression fitting so that the end of the heater (longer
tube) is positioned in the middle of the pipe.
Ø
D
O
AL
D
A
/2
SL
AL
36
R
E
54
2
