Yokogawa SC25V - Manual (Page 7)

7
IM12B6J1-40E-E
Figure 2
Figure 3
Figure 4
Figure 5
3. INSTALLATION
3.1 Typical installation
The SC25V sensor can be installed in-line, in a
bypass loop or in an immersion assembly. For
best results the SC25V should be mounted with
the process fluid flowing towards the sensor
and positioned at least 15° above the horizontal
plane to eliminate air bubbles in the glass bulb.
See fig. 6 section 3.3
3.2 Preparing the sensor for use
Remove the sensor from its shipping box and
slide off the “wet pocket” (the flask including the
rubber ring). This wet pocket is filled with a weak
acid and saline solution to prevent the sensor
from drying out during storage and making sure
it is ready for immediate use.
Before mounting the sensor, it should be
validated with buffer solutions and calibrated
when necessary. The specific calibration
procedure is described in the Instruction Manual
of the pH transmitter, but a general procedure is
also provided in section 5 of this manual.
3.3 Mounting the sensor
The SC25V can be mounted using:
• PR10 retractable fitting (see fig 2).
• FF20 flow fitting / FS20 subassembly / FD20
immersion fitting (see fig 4)
• For mounting in Yokogawa fittings, a PG13.5
to M25 adapter is available in different
materials (see fig 3) more information in
chapter 7.
• PD20 immersion fitting / PF20 flow fitting /
PS20 flow fitting (see fig 5)
• FF40 fitting with PG13,5 adapter (K1523JA)
or the small flow fitting K1598AC with PG13,5
adapter (K1523JB), (see fig 7).
PR10
O-RING VITON 11x3
SC25V
O-RING 11 x 3
SLIDE RING
RYTON
SC25V
FD20 / FF20 / FS20
2 x O-RING 11x3
K1520JN
SC25V
PD20 / PF20 / PS20
O-RING 11 x 3
SLIDE RING
RYTON
SC25V