Hach TU5 Series, User Instructions, Page: 4 / 138

This symbol indicates that a risk of electrical shock and/or electrocution exists.
This symbol indicates the need for protective eye wear.
This symbol indicates a laser device is used in the equipment.
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 radio waves.
This symbol indicates the presence of a strong magnetic field.
1.2 Product overview
W A R N I N G
Pacemaker precautions. The instrument has an internal magnet. Keep the instrument a minimum of
5 cm (2 in.) from the user. A magnetic field can:
• Stop the stimulating pulses from the pacemaker that control the rhythm of the heart.
• Cause the pacemaker to supply the pulses irregularly.
• Cause the pacemaker to ignore the rhythm of the heart and supply pulses at a set interval.
The automatic cleaning module is an accessory for the TU5300 sc and the TU5400 sc turbidimeters.
Refer to
Figure 1 . The automatic cleaning module cleans the vial at a selected time interval or
turbidity reading limit. As an alternative, start the cleaning manually or with a Modbus connection.
4 English