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With HI 93703 turbidity measurements can be
performed with high precision in the field as well
as in the laboratory.
HI 93703 turbidity meter is a portable,
microprocessor-based instrument used to
determine the turbidity of water and wastewater.
The meter covers a 0 to 1000 FTU range in two
scales: 0.00 to 50.00 FTU and 50 to 1000 FTU.
The auto-ranging feature sets the appropriate
range for the measurement.
HI 93703 has been designed according to
the ISO7027 International Standard,
consequently the turbidity unit is the FTU
(Formazine Turbidity Unit). FTU is
equivalent to the other internationally
recognized unit: NTU (Nephelometric
Turbidity Unit).
GENERAL DESCRIPTION
Dear Customer,
Thank you for choosing a HANNA instruments
®
product.
Please read this instruction manual carefully
before using the instrument.
This manual will provide you with all the neces-
sary information for the correct use of the
instrument. If you need additional technical
information, do not hesitate to e-mail us at
[email protected].
This instrument is in compliance with the
directives.
TABLE OF CONTENTS
Preliminary examination ............................. 3
General description .................................... 3
Principle of operation .................................. 5
Functional description ................................ 6
Specifications ............................................ 7
Operational guide ....................................... 8
Measurement procedure ........................ 8
How to ensure accurate measurements ... 11
Sources of interferences ...................... 12
Calibration ................................................ 13
Calibration procedure .......................... 13
How to ensure accurate calibration ...... 16
Standard suspension .......................... 17
Viewing the calibration date ................ 17
Battery replacement ................................. 18
LCD and error messages .......................... 20
Accessories ............................................. 22
Warranty .................................................. 22
CE declaration of conformity .................... 23
PRELIMINARY EXAMINATION
Remove the instrument from the packing material
and examine it to make sure that no damage has
occurred during shipping. If there is any damage,
notify your dealer.
HI 93703 is supplied complete with:
• Glass cuvet with cap
• Batteries (4 x 1.5V AA) and instructions
HI 93703C is a complete kit supplied with:
• 2 glass cuvets with caps
• Batteries (4 x 1.5V AA) and instructions
• HI 93703-0 & HI 93703-10 cal. solutions
• HI 93703-50 cleaning solution
• Tissue for wiping cuvets
• Rugged carrying case
Note: Save all packing material until you are
sure that the meter functions correctly.
All defective items must be returned in
its original packaging with the supplied
accessories.