Preface; Introduction; Unpacking And Checking; Warranty And Service - YOKOGAWA DO72 Instruction Manual

1. PREFACE

1.1 Introduction

The DO72 optical dissolved oxygen sen-
sor uses the optical measurement meth-
od to continuously measure oxygen
dissolved in water in various industries
and applications where accurate mea-
surement and control is required.
The optical sensor is integrated in a
exchangeable stainless-steel cap that is
screwed to the probe housing.
These extremely robust probes can be
installed in various applications. The op-
tical sensors have a fast response time &
good long-term stability with low main-
tenance and low costs of ownership.
The DO72 sensor is available for ppm
range and ultra trace ppb range oxygen
measurements. The interface used is
Bi-directional digital communication
RS485 and can be connected directly
to the new FLXA402 4-Wire converter.
Converter is designed to combine the
superior functionality and ease of use
from the Yokogawa FLXA series with the
digitization of the future.
The DO72 sensor is ideally suited for
industry applications where it must
stand harsh measurement conditions.
They are delivered in 120mm length
and have a sensor cap that can easily be
exchanged.

1.2 Unpacking and Checking

Upon arrival of the purchased product,
carefully unpack it and make sure the
product has not been damaged during
transportation. Verify the model code on
a name label adhered on the packaging
box. For details of the model code, see
subsection 7.

1.3 Warranty and Service

Yokogawa products and parts are
guaranteed free from defects in work-
manship 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 typ-
ical 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 descrip-
tion of the process.
• Description of the fault and circum-
stances 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 instruc-
tions 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 certif-
icate 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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