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IM 12B6J1-41E-E
13
3 INSTALLATION OF SC25F
For optimum measurement results, the
SC25F should be installed in a location
that offers an acceptable representation of
the process composition and DOES NOT
exceed the specifications of the sensor.
The SC25F is designed with PG13.5
threaded connection to allow installation in
a wide variety of applications.
3.1 Typical installation
The SC25F sensor is designed for versatile
in-line, immersion or off-line installation. For
best results the SC25F should be mounted
with the process flow coming towards the
sensor, and positioned at least 15° above
the horizontal plane to eliminate air bubbles
in the pH glass bulb (see Figure 4).
Fig 4: Mounting positions of sensor
3.2 Preparing the sensor for use
Remove the sensor from its shipping box
and slide off the so-called ‘wet pocket’, the
tube filled with solution to prevent drying out
of the measuring elements during shipment
or storage. During shipment, electrolyte in
the sensor could be dislocated. To correct
this, place the sensor upright for 24 hours.
Before installing the sensor in the process it
should be calibrated. A general calibration
procedure is described in Section 6 of this
Instruction Manual.
3.3 Mounting the sensor
The simplest mounting is to use the PG13.5
threaded connection of the sensor. The
sensor is standard with a slide ring (Ryton)
and an O-ring (Silicon) for direct mounting
in a fitting provided with PG13.5 thread
(see Figure 5). Other O-ring materials are
available as a spare part (see Section 8 of
this Instruction Manual).
Note: When sensor is installed in a fitting
which is already provided with a
spacer for the sensor, remove the
pre-installed slide ring and O-ring
and follow the installation instructions
of the fitting.
Fig 5 : Simple mounting of sensor in
PR10 retractable fitting
INCORRECT
15º
15º
HORIZONTAL
GOOD
GOOD
Slide ring (Ryton)
O-ring
Sensor
Holder
PG13.5