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1. Introduction
1.1. General
The flow fittings (Model FF20) and their
subassemblies (Model FS20) are used
to mount sensor tips in a piping system
so that the pH and/or the ORP (Redox)
potential of the liquid flowing through it can
be measured.
The flow fittings are for connection between
two pipes of the piping system providing
a "flow through" path. From a practical
plant aspect (for easy maintenance and
calibration) the mounting place is in a
by-pass behind a sample valve. They are
supplied with a ring to hold calibration dish
for this cleaning and/or calibration.
The subassemblies should be cemented or
welded direct in the piping system or in a
T-piece of it. The subassemblies of stainless
steel meet the requirements of DIN 11850
for mounting in sanitary constructions.
1.2. Features
• Wide choice fo construction materials.
• High degree fo standardisation reduces
spare holding requirements.
• Direct mounting of sensors with DIN
dimensions.
• Liquid earth sensor for stable
measurements.
• High pressure and temperature
specifications.
• Chemical or brush cleaning (optional in
4-hole fittings).
2. Unpacking and checking
2.1. Unpacking and inspection
When you receive the flow fitting (Model
FF20) or the subassembly flow fitting (Model
FS20) it is packed in a cardboard box.
Open the box and check that the model
code is the same as on the packing list (see
§2.5 for the model code). Also check that
it is supplied with the options you ordered.
These options are delivered in seperate
bags.
If you have any problems or questions,
please contact the nearest Yokogawa
service center or sales organisation for
assistance.
2.2 Warranty and Service
Yokogawa products are guaranteed free
from defects in workmanship and materials
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 is excluded from this warranty
coverage. In the event of a warranty claim,
the defective goods should be sent (freight
paid) to the Service Department of the
relevant Yokogawa Sales office 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.
1
IM 12B06K01-01E-E
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