Yokogawa FU24F - Manual (Page 5)

IM 12B6J8-01E-E
5
1. PREFACE
1.1 Introduction
This Instruction Manual provides information
for the installation and use of the FU24F
SENCOM™ sensor. This digital sensor
shows how Yokogawa applies the motto
“Simply the Best” to sensor technology.
Setup of the sensor is very easy because
all sensor specific characteristics, such as
calibration data, are stored in the sensor.
The FU24F SENCOM™ sensor holds
four separate measuring elements in one
unbreakable and chemical resistant
PPS 40GF (Ryton TM ) wide body:
• pH glass electrode.
• Long life saturated Ag/AgCl reference
system with double junction, combined
with ion-trap to prolong the lifetime of
the reference probe even in chemically
unfavorable environments.
• Integral Pt1000 element for accurate
temperature measurements.
• Solid Platinum ORP/LE electrode for
accurate simultaneous pH and ORP
measurements.
The Model FU24F offers a simple and
cost effective solution for process
applications with fluctuating pressure and/
or temperature which normally limits the
lifetime of a sensor.
By using the patented Bellow system a
strong pressure compensation mechanism
is created. This ensures immediate interior
pressure equalization to the outside process
pressure, making the sensor virtually
insensitive to process pressure variations.
A slight overpressure caused by the bellow
tension prevents process fluid ingress and
maintains a positive ion flow out of the
sensor. This feature is of particular interest
in pure water applications.
Other valuable features of the sensor:
• PTFE reference diaphragm to prevent
fouling.
• Polymerized electrolyte to extend the
sensor lifetime.
• Available in two versions, a robust dome
shape model for applications with a
limited amount of solids, and a flat surface
model for application in slurries, such as
in the pulp and paper industry.
• Versatile in-line or off-line installation.
The FU24F is provided with a multipole
M9 male connector for connection to the
Yokogawa FLXA analyzer using the WU11
interconnection cable for SENCOM™
sensors. This cable, available in 4 fixed
lengths, is specified for reliable transfer of
digital signals and especially designed to be
installed in a heavy industrial environment.
The double shielded cable will protect both
the sensor and the analyzer for interference
from high voltages and currents which are
present on other cables.
1.2 Unpacking and Checking
Upon delivery, unpack the sensor carefully
and inspect it to ensure that it is not
damaged during shipment. If damage is
found, retain the original packing material
and immediately notify the carrier and the
relevant local Yokogawa Sales Office.
Make sure the Model Code and Serial
Number on the sensor are the same as on
the packing list. Also check if option(s) that
were ordered, are included and correct.