Hanna Instruments HI 300N User Manual
Instruction Manual
HI 300N - HI310N
HI 301N - HI 311N
HI 302N - HI312N
HI 303N - HI 304N
HI 322N - HI 324N
Magnetic Stirrers
www.hannainst.com
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Dear Customer,
Thank you for choosing a Hanna product.
Please read this instruction manual carefully before
using the meter. If you need additional technical information, do not hesitate to e-mail us at
tech@hannainst.com.
These meters are in compliance with directives.
WARRANTY
All Hanna Instruments products are warranted for two years
against defects in workmanship and materials when used for their
intended purpose and maintained according to the instructions.
Damages due to accidents, misuse, tampering or lack of prescribed maintenance are not covered. This warranty is limited to
repair or replacement free of charge. If service is required, contact
the dealer from whom you purchased the instrument. If under
warranty, report the model number, date of purchase, serial
number and the nature of the failure. If the repair is not covered by
the warranty, you will be notified of the charge for repair or
replacement. If the instrument is to be returned to Hanna Instruments, obtain a Return Goods Authorization from the Customer
Service Department first and then send it with shipment cost prepaid.
When shipping any instrument, make sure it is properly packaged
for complete protection.
TABLE OF CONTENTS
Preliminary Examination................................... 3
General Description ......................................... 3
Application Guide .............................................. 5
Electrical Connections...................................... 6
Accessories....................................................... 6
Functional Description & Specifications.......... 7
HI 300N & HI 310N ........................................ 8
HI 301N & HI 311N ...................................... 10
HI 302N & HI312N ....................................... 1 2
HI 303N ......................................................... 14
HI 304N ......................................................... 16
HI 322N & HI 324N ...................................... 18
Operational Guide for
HI 300N & HI 310N ...................................... 20
HI 301N, HI 303N & HI 311N ...................... 22
HI 302N, HI 304N & HI 312N ...................... 24
HI 322N & HI 324N ......................................... 26
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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.
Each stirrer is supplied complete with a magnetic stir bar.
Note: Save all packing material until you are
sure that the instrument functions correctly. All defective items must be returned in the original packing with the
supplied accessories.
GENERAL DESCRIPTION
The Hanna series of magnetic stirrers are
designed with simplicity of use for stirring
and mixing solutions in a wide range of laboratory applications. Several models are available in an extensive range covering:
• general purpose stirrers
• dual-speed range
• auto-reverse cycle stirring
• rpm indication
• timer control
All models employ a motorized magnet to
rotate a stirring bar to create a forced vortex
rotational flow in the solution with a constant
angular speed which is adjustable with an
external speed knob.
Unlike conventional stirrers, all Hanna stirrers
use the concept of pulse-driven drive to give
the full power required to effectively stir the
fluid regardless of the speed.
This eliminates the need to start the motor at
high speed and the user is now able to
control the speed precisely.
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Each stirrer is equipped with an opto-sensor
for speed monitoring, and a speed limiter
circuit that prevents hazardous operation when
the load is suddenly removed.
The power required to effectively stir a fluid is
affected by the torque load on the stirrer
which is dependent on the capacity, type and
viscosity of the fluid. The speed of the stirrer
decreases as the torque load increases and
vice versa, unless the power delivered changes
accordingly.
For Newtonian fluids like water, the viscosity
remains constant during stirring. General purpose, normal stirrers are ideal for this kind of
fluids.
For some fluids like oil and clay, the viscosity changes during the stirring process, making it necessary to adjust the power to maintain a constant speed during the stirring.
Hanna Auto-Speed stirrers (HI 31X series)
are designed with automatic feedback control
to maintain constant speed when the torque
load changes and are therefore ideal for stirring non-Newtonian fluids where the viscosity
changes during stirring.
They are also ideal for mixing applications
where one solution is added to another which
changes the capacity and thereby the torque
load on the stirrer.
The Auto-Speed stirrers maintain a constant
stirring speed during the mixing up to the full
capacity of 5 liters. They can also be used
with Newtonian fluids up to a capacity of
5liters.
APPLICATION GUIDE
APPLICATION MODE L
Newtonian fluids HI 300N
up to 2.5 liters HI 301N
HI 302N
HI 304N
Non-Newtonian fluids HI 310N
up to 5 liters whose HI 311N
viscosity changes HI 312N
during stirring or
Newtonian fluids up
to 5 liters or mixing
operation where load
changes during stirring
Repetitive stirring in HI 303N
Newtonian fluids up
to 2.5 liters
Repetitive stirring in HI 304N
multiple samples with
the same stirring speed
Routine stirring HI 322N
application with a
predetermined stirring time
Repetitive stirring in HI 324N
multiple samples with
the same stirring speed
and predetermined
stirring time
Hanna Instruments reserves the right to
modify the design, construction and appear-
ance of its products without advance notice.
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ELECTRICAL CONNECTIONS
FUNCTIONAL DESCRIPTION
AND SPECIFICATIONS
See the following pages for specifications of
each model.
The capacity is referred to stirring water with
a viscosity of 0.001 N·s/m2 at 25ºC.
Specifications for all models
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1. ON/OFF switch for power supply
2. Fuse holder for 400 mA/250 V fuse
3. AC power cord.
Unplug the stirrers from the power sup-
ply before replacing the fuse.
ACCESSORIES
HI 731320 Magnetic stir bar (10 pcs)
Speed ON/OFF and continuously
Control variable with potentiometer
knob
Drive Direct drive D.C. Motor with
magnet
Power 4 W
Consumption
Torque 85 g·cm
Delivered
Power 115 or 230 Vac, 50/60 Hz
Supply depending on models
Fuse 400 mA/250 V; 20x5 mm
Stirring Bar Teflon® coated,
L 50 x dia 7 mm
Recommendations for Users
Before using these products, make sure that they are entirely suitable for the
environment in which they are used.
Operation of these instruments in residential area could cause unacceptable
interferences to radio and TV equipments, requiring the operator to take all necessary
steps to correct interferences.
Any variation introduced by the user to the supplied equipment may degrade the
instruments' EMC performance.
Unplug the stirrers from the power supply before replacing the fuse.
To avoid damages or burns, do not place these stirrers in microwave ovens.
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HI 300N & HI 310N
GENERAL PURPOSE STIRRERS
These general purpose stirrers are suitable
for daily stirring applications in the laboratory.
HI 300N normal stirrer and HI 310N autospeed
stirrer are covered with a corrosion resistant
stainless steel top.
HI 300N HI 310N
Maximum 2.5 Liters 5 Liters
Stirring (0.66 gallons) (1.3 gallons)
Capacity
Speed Range
Min 100 rpm
Max 800 to 1000 rpm
MAGNETIC STIRRER
HI 300N
HI 310 AUTOSPEED
MAGNETIC STIRRER
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POWER
1
POWER
ON
ON
OFF
OFF
2
MAX
SPEED
2
MAX
SPEED
1. Power indicator (LED lights up when the
stirrer is powered)
2. ON/OFF/SPEED knob, to turn the stirrer
ON and OFF, and set the stirring speed
(continuously variable up to the maximum)
Auto-Speed not applicable standard
Power Supply
HI 300N-1 110/115 Vac, 50/60 Hz
HI 300N-2 220/240 Vac, 50/60 Hz
HI 310N-1 110/115 Vac, 50/60 Hz
HI 310N-2 220/240 Vac, 50/60 Hz
Installation II
Category
Cover AISI 316 stainless steel
Material
Environment 0 to 50ºC (32 to 122ºF);
RH max 95%
Dimensions 180 x 180 x 70 mm
(7.1 x 7.1 x 2.8")
Weight 1.4 kg (3.1 lb.)
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