Yokogawa SC25F - Manual (Page 6)

IM 12B6J1-41E-E
6
1. PREFACE
1.1 Introduction
This instruction manual provides information
for the installation and use of the SC25F
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 SC25F SENCOM™ sensor holds four
separate measuring elements:
• pH glass electrode.
• Long life saturated Ag/AgCl reference
system.
• Integral Pt1000 element for accurate
temperature measurements.
• Solid Titanium LE electrode for accurate
pH measurements.
Other valuable features of the sensor:
• PTFE reference diaphragm to prevent
fouling.
• Polymerized electrolyte to extend the
sensor lifetime.
• Available in different versions, a
G-glass version for general purpose
applications, and a L-glass version for
harsh applications and high process
temperatures. Both the G-glass as the
L-glass version are available in two
different lengths, 120 mm and 225 mm.
• Versatile in-line, immersion or off-line
installation.
Optional quick-removal adapters in both
stainless steel and titanium are available
to make calibration and maintenance even
easier.
The SC25F 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.
1.3 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