Yokogawa ISC40 Inductive Conductivity Sensor - Manual (Page 14)

For optimum measurement results,
the ISC40 sensor should be installed
in a location that offers an acceptable
representation of the process composition
and DOES NOT exceed the specifications
of the sensor.
It is important that the process flow is
directed through the hole in the donut
of the sensor. For this reason the flats
on the sensor top part have to be installed
perpendicular on the process flow
(see fig. 4).
The inductive conductivity measurement
technique requires a process fluid
surrounding the donut of the sensor. The
installation factor mentioned on the label
of the sensor cable will assure accurate
conductivity measurement under the
condition that the donut is surrounding by
25 mm (1”) process fluid. If this condition
cannot be met, the measurement loop
(analyser in combination with sensor) has
to be calibrated. Consult the instruction
manuals of the analyser for details.
The mounting of the sensor in the process
adapters is described in section 3.1. The
mounting of the process adapters in the
end-users application requires compatibility
of materials and process connections.
3.1 Typical installation
3.1.1 Installation of ISC40G(S)-GG (TG)
with flange adapters
The ISC40G(S)-GG (TG) sensor is
supplied with a flat Viton sealing gasket
for compatibility with existing installations.
When using the sensor in combination with
the new fittings, which are improved by the
addition of O-ring seals (see figure 6), the
flat Viton gasket should be discarded.
It is important that the access port has a
diameter of at least 50 mm (2”) to allow
insertion of the donut shaped end of the
sensor. For more detailed dimensions of the
sensor see paragraph 4.
A
B
2
1
PUSH & TURN
3
DO NOT WRENCH
TORQUE MAX. 25Nm.
3 INSTALLATION OF SENSOR WITH STANDARD OPTIONS
Fig 4: Aligning of sensor donut (B) and
flats (A)
Fig 5: Mounting Procedure ISC40G(S)-
GG (TG) with flange adapters
Note: When a torque of more than 25 Nm
is applied, the top part of the body
of the PFA sensor will be damaged
(TG model)
14
IM 12D8J2-E-E