4
Signet 3719 pH/ORP Wet-Tap
Installation in Pipe Sizes 2.5 to 12 Inches
•
For reliable in-line measurements of pH and ORP, it is
imperative to position the electrode tip into the process
stream.
•
Because of its compact “short stroke” design, the 3719
requires low-profi le fi ttings to ensure
proper positioning in pipe sizes
DN65 to DN300 (2.5 to 12 inches).
•
It is strongly recommended
to use low-profi le fi ttings
(customer-supplied).
•
Choose the 3719 version (-1X or
-2X) appropriate to the size of the
branch connection of the required
fi tting:
Use -1X for sizes DN65 to DN100
(2.5 to 4 in), and -2X for sizes
DN150 to DN300 (6 to 12 in.)
Installation in Pipe Sizes less than 2.5 Inches
•
It is possible to install the 3719 into pipe sizes below
2.5 inches by creating a “fl ow cell” with standard piping
components.
•
One simple solution, using a tee fi tting and reducer bushings,
is shown in the example below.
•
Many similar confi gurations are conceivable in a wide
variety of materials, but be very careful to verify dimensional
compatibility.
•
Select an appropriate installation orientation to avoid the
entrapment of air inside the fl ow cell.
•
Contact your local Georg Fischer Sales and Support offi ce
for assistance.
3-3719-1X
pH/ORP Wet-Tap
(Fully Inserted)
2 in /d50 mm
Tee
(S x S x S)
1½ in.
Threads
Flush Style Reducer
Bushings (Spg x S)
2 in./d50 x ½ in./12 mm
2 in./d50 x ¾ in./20 mm
2 in./d50 x 1 in./25 mm
2 in./d50 x 1¼ in./30 mm
2 in./d50 x 1½ in./40 mm
3-3719-1X
pH/ORP Wet-Tap
Flush Style Reducer Bushing
(Spg x FT) 2 in. x 1½ in.
250 mm
(9.9 in.)
45 mm
(1.75 in.)
115 mm
(4.5 in.)
218 mm
(8.57 in.)
OR
89.4 mm
(3.5 in.)
•
Provide 20 inches (minimum) clearance from the top of the
pipe for electrode removal..
Installation continued
Installation continued
