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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.
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.
Note: Information that requires special emphasis.
Precautionary Labels
Read all labels and tags attached to the instrument. Personal injury or damage to
the instrument could occur if not observed.
2.2 General Product Information
The controller enclosure is NEMA4X/IP66-rated and has a corrosion-resistant
finish designed to withstand corrosive environmental constituents such as salt
spray and hydrogen sulfide. The controller display shows the current turbidity
reading if connected to a single sensor, or two readings when two sensors
are connected.
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.
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).
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