Hach 1720E, User Manual

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5
Section 2 General Information
2.1 Safety Information
Please read this entire manual before unpacking, setting up, or operating this equipment.
Pay attention to all danger and caution statements. Failure to do so could result in serious
injury to the operator or damage to the equipment.
To ensure that the protection provided by this equipment is not impaired, do not use or
install this equipment in any manner other than that specified in this manual.
2.1.1 Use of Hazard Information
DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate
injury.
Important Note: Information the requires special emphasis.
Note: Information that supplements points in the main text.
2.1.2 Precautionary Labels
Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed.
2.1.3 General Product Information
The 1720E Turbidimeter is a continuous-reading nephelometric turbidimeter designed for
low-range turbidity monitoring. This process turbidimeter is capable of measuring turbidity
from 0.001 to 100.0 NTU. Calibration is based on formazin, the primary turbidity reference
standard adopted by the APHA
Standard Methods for the Examination of Water and
Wastewater
and the U.S. Environmental Protection Agency (EPA) and on StablCal
®
which
is also recognized as a primary standard.
The 1720E Turbidimeter can be operated using an sc controller. Refer to the Operation
section (
Section 5 on page 15 ) for more information.
This symbol, if noted on the instrument, references the instruction manual for operation and/or safety information.
This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock and/or
electrocution exists.
This symbol, if noted on the product, indicates the need for protective eye wear.
This symbol, when noted on the product, identifies the location of the connection for Protective Earth (ground).