Introduction 11Basic installation procedureHere are the basic installation steps described in this guide. The following chapters provide moredetails.1 Access and properly secure the installation site (vessel depressurization and cool down, mains powerdown, etc.) (see page 16).2 Attach the probe to the head-coupler assembly (see page 17).3 Slide the probe in the vessel and attach the assembled LWT system on the external flange (seepage 19).4 Ground the head unit and connect it to the mains (see page 23).5 Power up (see page 26) and configure the instrument (see page 37).DisclaimersABB declares that the content of this guide is not part of any prior or existing agreements,commitments, or legal relationships, nor are they intended to amend these. ABB obligations arisefrom the conditions of the relevant sales agreement, which also contains the solely binding warrantyregulations in full. These contractual warranty provisions are neither extended nor limited by theinformation provided in this guide.Improper useIt is prohibited to use the instrument for any of the following, including but not limited to:• A climbing aid, e.g., for mounting purposes.• A support for external loads, e.g., as a support for pipes.• By adding material, e.g., by painting over the name plate, or welding/soldering on parts.• By removing material, e.g., by drilling the housing.Repairs, alterations, and enhancements, or the installation of replacement parts, are only permissible asfar as these are described in this guide. Approval by ABB must be requested in writing for any activitiesbeyond this scope. Repairs performed by ABB-authorized centers are excluded from this article.Technical limit valuesThe instrument is designed for use exclusively within the values stated on the name plates and withinthe technical limit values specified on the data sheets.Technical limit values that must be observed at all time are:• The maximum working pressure, ambient working temperature, and maximum process temperaturemay not be exceeded.• The housing protection type must be observed.• The electrical specifications must be observed.