GF Signet 2750 DryLoc pH_ORP Sensor Electronics User Manual

Page 3

Signet 2750 DryLoc pH/ORP Sensor Electronics

Unlocked

Insert electrode into Signet installation fi tting. Seat the

electrode tabs into the alignment notches in the fi tting.

Thread the in-line retaining nut onto fi tting to secure the electrode
into place.

Unlock the ring on base of 2750 (The ring is unlocked when the

lines on the ring and body of the 2750 are not aligned.)

Place 2750 onto top of electrode and turn until the assembly

drops into position.

Turn locking ring

turn to secure the 2750 assembly.

(The ring is locked when the line on the ring and the line on the
body of the 2750 are aligned.)

Lubricate O-rings
with a non-petroleum
based, viscous lubricant
(grease) compatible
with the system.

Note:
Keep the electrical interconnection between electrode and sensor
electronics dry and clean at all times.

4. 2750 In-line pH Sensor Assembly

CAUTION!
• Do not remove the electrode from a pressurized pipe.
• Wear appropriate protective clothing when working

with chemicals in pressurized pipe.

In-Line Sensor and Electrode Removal
•

To remove electronics assembly only:

Turn locking ring

turn; lift assembly straight up.

•

To remove electrode from the pipe:

Remove electronics assembly, then unthread retaining cap;
pull electrode straight up.

•

To remove the complete 2750 system:

Hold locking ring in place. Unthread retaining cap and pull
electrode straight up.

Note: This procedure applies to systems using standard 2724-2726 electrodes. If the 3719

pH/ORP Wet-Tap is used, refer to the 3719 manual for instructions.

Retaining nut

The molded alignment
marks are enhanced
for clarity.

Locking Ring

Locked

The molded alignment
marks are enhanced
for clarity.

HAND-TIGHTEN THE THREADED NUT ONTO THE INSTALLATION
FITTING. DO NOT USE TOOLS! DO NOT USE THREAD SEALANT OR
LUBRICANTS ON THE FITTING THREADS OR THE SENSOR CAP.

LUBRICATE O-RINGS WITH A NON-PETROLEUM BASED, VISCOUS
LUBRICANT (GREASE) COMPATIBLE WITH THE SYSTEM.

Chemical Compatibility Warning
The retaining nuts of pH and ORP sensors are not designed for prolonged contact with
aggressive substances. Strong acids, caustic substances and solvents or their vapor may
lead to failure of the retaining nut, ejection of the sensor and loss of the process fl uid with
possibly serious consequences, such as damage to equipment and serious personal injury.
Retaining nuts that may have been in contact with such substances e.g. due to leakage or
spilling, must be replaced.