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6
1. PREFACE
1.1 Introduction
This instruction manual provides
information for the installation and use
of the FU20, four-in-one wide body pH
sensors with a digital option for the newest
SENCOM platform. The FU20 is the choice
for the majority of the process applications.
The Model FU20 offers a simple and cost
effective solution for a wide variety of
process applications. This all-in-one sensor
provides simultaneous measurement of pH,
redox (ORP) and temperature if desired.
Chemical compatibility in the target
application is secured by the choice of
body material.
The rugged PPS body is designed for
easy installation into on-line and immersion
applications via the 3/4" NPT threaded
connections provided on both ends of the
sensor. In application where the sensor is
exposed to some concentrated acid or in
high temperature acid environment, the
material of choice will be PVDF. Optional
quick-removal adapters in both stainless
steel and titanium are available to make
calibration and maintenance even easier.
The PPS FU20 comes with an integral
cable of optional lengths designed to
minimize the adverse affects noise can
have on the measurement. This cable is
pre-finished to make connection to any
industrial pH instrument as simple as
possible. For both PPS and the PVDF
version of the FU20 sensors with a
multipole VP connector are available. These
require seperate cable type WU10-V-D that
is available in 5 fixed lengths.
1.2 Unpacking and Checking
Upon delivery, unpack the sensor carefully
and inspect it to ensure it was not
damaged during shipment. If damage is
found, retain the original packing materials
and then immediately notify the carrier and
the relevant Yokogawa sales office. Make
sure the Model Code and Serial Number
on the sensor are the same as on the
IM 12B06J03-02E-E
packing list. Also, check any option(s) that
were ordered are included and correct.
1.3 Warranty and Service
Yokogawa products and parts are
guaranteed free from defects in
workmanship and material under normal
use and service for a period of (typically) 12
months from the date of shipment from the
manufacturer. Individual sales organizations
can deviate from the typical warranty
period, and the conditions of sale relating
to the original purchase order should be
consulted. Damage caused by wear and
tear, inadequate maintenance, corrosion,
or by the effects of chemical processes are
excluded from this warranty coverage. In
the event of warranty claim, the defective
goods should be sent (freight paid) to the
Service Department of the relevant sales
Organization for repair or replacement (at
Yokogawa's discretion).
The following information must be included
in the letter accompanying the returned
goods:
• Model Code and Serial Number.
• Original Purchase Order and Date.
• Length of time in service and description
of the process.
• Description of the fault and circumstances
of the failure.
• Process/environmental conditions that
may be related to the failure of the sensor
• Statement as to whether warranty or non-
warranty service is requested.
• Complete shipping and billing instructions
for return of material, plus the name and
phone number of a contact person that
can be reached for further information.
• Clean Statement
Returned goods that have been in
contact with process fluids must be
decontaminated and disinfected prior
to shipment. Goods should carry a
certificate to this effect, for the health and
safety of our employees. Material Safety
Data sheets must be included for all
components of the process to which the
sensor(options) have been exposed.
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