Preface; Introduction; Unpacking And Checking; Warranty And Service - YOKOGAWA SC4A Instruction Manual

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1. PREFACE

1.1 Introduction

The sensor, model SC4A, SC41, SC42, SC49 and SX42, and associated fitting program is
designed to meet the most common installation requirements in terms of material compatibility,
process connections and flow dynamics. The various installation possibilities are described and
illustrated in this Instruction Manual.
Model SC4A sensors, available in a Stainless Steel or Titanium version with fixed cable or
Variopin connector, in combination with WU10/WE10-cable are intended for the low conductivity
applications. These sensors are designed in a convenient compact style, and can be inserted
directly in process pipework using available fittings or adapters.
Model SC41, SC42 and SC49 sensors, available in various materials such as Epoxy, Stainless
Steel, PTFE and PVDF, are intended to suit most process conditions. The sensors are provided
either with a Amphenol connector to fit the Yokogawa WU40 cable or Variopin connector to fit with
Yokogawa WU10/WE10-cable. A wide range of flow and immersion fittings makes it possible to
install the sensors in a permanent or semi-permanent location.
Model SX42 sensors have a Stainless Steel body and ceramic insulation, especially designed to
withstand high temperatures and high pressures. The flanged model has an integral connection box,
the threaded models are provided with a Amphenol connector to fit the Yokogawa WU40 cable or
Variopin connector to fit with Yokogawa WU10/WE10-cable.
All sensors have a pre-calibrated cell constant and a built-in temperature element for automatic
temperature compensation. Sensors with the Variopin connector are equipped with an ID-chip
in which callibration information is stored for easy setup when connected to a SENCOM Smart
Adapter model SA11-C1. For metal sensors a 3.1 material certificate is included. The sensors,
except those equipped with Variopin connector, are ATEX certified for installation in zone 0
environments when connected to a certified intrinsically safe Yokogawa analyser, model SC202S
or FLXA21 or a certified intrinsically safe circuit with defined output parameters (see General
Specifications of each sensor for details).

1.2 Unpacking and Checking

Upon delivery, unpack the sensor carefully and inspect it to ensure that it is not damaged during ship-
ment. 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
IM 12D07J01-10E-E