3
Signet 3719 pH/ORP Wet-Tap
5. Installation
5.1 Notes on Location, Orientation and Required Clearance
•
The 3719-1 is designed for use in pipes up to 4 in.
•
The 3719-2 is designed for use in pipes from 6 to 12 in.
•
Select a location that will provide sufficient clearance to
remove and insert the electrode.
•
The 3719 can be mounted in any orientation, including
horizontal and inverted.
•
If inverted, use caution when removing the sensor.
Residual fluid may be present in the retraction housing.
Keep electrode connector clean and dry at all times.
250 mm
(9.9 in.)
45 mm
(1.75 in.)
91 mm
(3.6 in.)
218 mm
(8.57 in.)
Any angle OK
4. 3719 System Overview
4.1 Twist-Lock Components
a
a
b
b
c
c
d
e
d
e
d
Signet pH/ORP
Transmitter
10.20 pH
25.0C
ENTER
a) 3719 pH/ORP Wet-Tap
b) Low Profile PP Clamp-on Saddle Fitting (ASTM sizes 2½ to
12 in.)
c) DryLoc™ pH or ORP Electrode (6 versions available; see
ordering infomation on page 8.)
("DryLoc" refers to the electrode connector style)
d) 2750 or 2760 DryLoc pH/ORP Preamplifier/Sensor
electronics
e) Output signal options:
- S
3
L
- 4 to 20 mA
All of these components (items a to d) are sold separately.
a) 3719 pH/ORP Wet-Tap
b) Low Profile PP Clamp-on Saddle Fitting (ASTM sizes 2.5 to
12 in.)
c) 2716-WT Twist-Lock pH or 2717 Twist-Lock ORP Electrode
(“Twist-Lock” refers to the electrode connector style)
d) 2720 Twist-Lock Preamplifier
e) Signet pH/ORP Instrument
All of these components are sold separately.
4.2 DryLoc Components
•
Provide 20 inches (minimum) clearance from the top of the
pipe for electrode removal.
•
Low profile polypropylene saddles available from 2½ to 12
in. (ASTM).
