Hach 1735 TRO, Hazardous Location Installation Manual, Page: 4 / 46

Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed. A symbol on the instrument is referenced in the manual with a
precautionary statement.
This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid potential
injury. If on the instrument, refer to the instruction manual for operation or safety information.
This symbol indicates that the marked item requires a protective earth connection. If not provided with
a plug on a cord, connect positive earth to this terminal (U.S. cord set provides ground).
This symbol indicates the presence of devices sensitive to Electro-static Discharge (ESD) and
indicated that care must be taken to prevent damage with the equipment.
This symbol indicates that a risk of explosion is present.
This symbol identifies a risk of chemical harm and indicates that only individuals qualified and trained
to work with chemicals should handle chemicals or perform maintenance on chemical delivery
systems associated with the equipment.
This symbol indicates the need for protective eye wear.
This symbol indicates that the object is heavy.
Electrical equipment marked with this symbol may not be disposed of in European public disposal
systems after 12 August of 2005. In conformity with European local and national regulations (EU
Directive 2002/96/EC), European electrical equipment users must now return old or end-of-life
equipment to the Producer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-
of-life equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
Product overview
The 1735 TRO is designed to meet ATEX Zone 1 requirements. When the instrument is installed as
shown in the provided compliance drawing, it is appropriate for use in Zone 1 hazardous locations.
Installation
D A N G E R
Explosion hazard. Trained personnel only must install or commission the equipment.
This document includes the installation information for hazardous locations. For installation,
operation and replacement part/accessory information for non-hazardous locations, refer to the
1735 TRO Analyzer User Manual .
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