Yokogawa FU20/PH20 All-in-One pH/ORP Sensor - Manual (Page 5)

IM 12B6J3-E-H
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1. GENERAL
1-1. INTRODUCTION
This instruction manual provides information
for the installation and use of the FU20 and
PH20, four-in-one wide body pH sensors.
While both sensors can be used in a variety
of applications, in general, the FU20 is the
choice for the majority of typical wastewater
and process applications. The PH20 with its
patented "compensation panels", is selected
when more aggressive chemicals (PVDF
body) or varying process temperatures and
pressures are present.
The Model PH20 is patented design, provi-
des continuous compensation for temperatu-
re and pressure changes in the process
resulting in an extremely accurate and stable
measurement. With this one sensor, pH,
redox (ORP) and temperature can be meas-
ured simultaneously. The PH20 can be easily
installed using a variety of adapters in
Stainless Steel or PVDF. You can choose
from a common 3/4" or 1" NPT threaded
connection or select the optional (/SF4)
stainless adapter that allows the use of
Yokogawa’s FF40, FS40 or FD40 sensor
holders.
The Model FU20 offers a simple and cost
effective solution for a wide variety of waste-
water and process applications. This all-in-
one sensor provides simultaneous measure-
ment of pH, redox (ORP) and temperature if
desired. The rugged Ryton body is designed
for easy installation into on-line and immer-
sion applications via the 3/4" NPT threaded
connections provided on both ends of the
sensor. Optional quick-removal adapters in
both stainless steel and titanium are available
to make calibration and maintenance even
easier.
Both the PH20 and FU20 include an integral
cable of optional lengths designed to minimi-
ze the adverse affects of noise can have on
the measurement. This cable is pre-finished
to make connection to any industrial pH ins-
trument as simple as possible.
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 (including outer
box) and then immediately notify the carrier
and the relevant Yokogawa sales office.
Make sure the Model Code on the sensor is
the same as on the packing list. Also, check
any option(s) that were ordered are included
and correct. The PH20 sensor has an identi-
fication number on the cable with the full
Model Code and a Serial Number included
1-3. Warranty and Service
Yokogawa products and parts are guaran-
teed 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 typi-
cal warranty period, and the conditions of
sale relating to the original purchase order
should be consulted. Damage caused by
wear and tear, inadequate maintenance, cor-
rosion, or by the effects of chemical proces-
ses are excluded from this warranty covera-
ge. In the event of warranty claim, the defec-
tive 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 infor-
mation must be included in the letter accom-
panying the returned goods:
1. Part Number, Model Code and Serial
Number.
2. Original Purchase Order and Date.
3. Length of time in service and description
of the process.
4. Description of the fault and circumstances
of the failure.
5. Process/environmental conditions that
may be related to the failure of the sensor
6. Statement as to whether warranty or non-
warranty service is requested.
7. 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.
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
sensors/fittings have been exposed.