Hanna Instruments HI 300N User manual

HI300N - HI310N
HI301N - HI311N
HI302N - HI312N
HI303N - HI304N
HI322N - HI324N
Magnetic Stirrers
INSTRUCTION MANUAL

Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using
this instrument.
This manual will provide you with the necessary information
for correct use of this instrument, as well as a precise idea
of its versatility.
If you need additional technical information, do not
hesitate to e‑mail us at [email protected] or view our
worldwide contact list at www.hannainst.com.
Dear
Customer,
All rights are reserved. Reproduction in whole or in part is prohibited without
the written consent of the copyright owner, Hanna Instruments Inc., Woon-
socket, Rhode Island, 02895, USA.

3
TABLE OF CONTENTS
Preliminary Examination ......................................................
General Description...............................................................
Application Guide...................................................................
Electrical Connections.............................................................
Functional Description and Specifications ...............................
HI300N & HI310N................................................................
HI301N & HI311N................................................................
HI302N & HI312N...............................................................
HI303N...............................................................................
HI304N ..............................................................................
HI322N & HI324N................................................................
Operational Guide for:
HI300N & HI310N...............................................................
HI301N, HI303N & HI311N..................................................
HI302N, HI304N & HI312N..................................................
HI322N & HI324N................................................................
Accessories...........................................................................
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4
5
6
8
11
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6
9
7
10
12
14
15
17
18

4
Remove the instrument and accessories from the packaging and verify
damage has not occurred during shipping. Remove protective film from
stirrer. Please contact your local Hanna Instruments Office.
Each stirrer is supplied with a magnetic stir bar.
Note:Save all packing material until you are sure that the instrument
works correctly. Any defective item must be returned in its original
packing.
The Hanna Instruments series of magnetic stirrers are designed with sim‑
plicity 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 Instruments 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.
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 stir‑
ring. General purpose, normal stirrers are ideal for this kind of fluids. For
some fluids like oil and clay, the viscosity changes during the stirring pro‑
cess, making it necessary to adjust the power to maintain a constant speed
during the stirring.
PRELIMINARY EXAMINATIONGENERAL DESCRIPTION

5
APPLICATION GUIDE
APPLICATION MODEL
Newtonian fluids up to 2.5 liters
HI300N
HI301N
HI302N
HI304N
Non‑Newtonian fluids up to 5 liters whose viscosity
changes during stirring or Newtonian fluids up to 5 liters
or mixing operation where load changes during stirring
HI310N
HI311N
HI312N
Repetitive stirring in Newtonian fluids up to 2.5 liters HI303N
Repetitive stirring in multiple samples with the same
stirring speed HI304N
Routine stirring application with a predetermined stirring
time HI322N
Repetitive stirring in multiple samples with the same
stirring speed and predetermined stirring time HI324N
ELECTRICAL CONNECTIONS
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 supply before replacing the fuse.
GENERAL DESCRIPTION
Hanna Instruments Auto‑Speed stirrers (HI31X 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 5 liters.

6
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 25 ºC.
Specifications for all models:
Speed Control ON/ OFF and continuously variable with
potentiometer knob
Drive Direct drive D.C. Motor with magnet
Power Consumption 4 W
Torque Delivered 85 g·cm
Power Supply 115 or 230 Vac, 50/ 60 Hz depending on
models
Fuse 400 mA/ 250 V; 20 x 5 mm
Stirring Bar Teflon® coated, L 50 x dia 7 mm
HI300N & HI310N
General Purpose Stirrers
These general purpose stirrers are suitable for daily stirring applications in
the laboratory.
HI300N normal stirrer and HI310N autospeed stirrer are covered with a
corrosion resistant stainless steel top.
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)

7
Speed Control ON/ OFF and continuously variable with
potentiometer knob
Drive Direct drive D.C. Motor with magnet
Power Consumption 4 W
Torque Delivered 85 g·cm
Power Supply 115 or 230 Vac, 50/ 60 Hz depending on
models
Fuse 400 mA/ 250 V; 20 x 5 mm
Stirring Bar Teflon® coated, L 50 x dia 7 mm
FUNCTIONAL DESCRIPTION AND SPECIFICATIONS
HI300N HI310N
Maximum
Stirring Capacity
2.5 liters
(0.66 gallons)
5 liters
(1.3 gallons)
Speed Range
Min.
Max.
100 rpm
800 to 1000 rpm
Auto-Speed not applicable standard
Power Supply
HI300N-1
HI300N-2
HI310N-1
HI310N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Dimensions 180 x 180 x 70 nm (7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
HI301N & HI311N
Two-Speed Stirrers
HI301N normal stirrer and HI311N autospeed stirrer, are ideal for long
duration stirring which require slow speed and accurate speed control (for
example in electrolysis applications).
The selectable HIGH/ LOW range allows to set the speed precisely.
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)
3. HIGH/ LOW switch (for selecting low or high speed range)

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FUNCTIONAL DESCRIPTION AND SPECIFICATIONS
HI301N HI311N
Maximum
Stirring Capacity
2.5 liters
(0.66 gallons)
5 liters
(1.3 gallons)
Speed Range
Low
High
100 to 500 rpm
100 to 800/ 1000 rpm
Auto-Speed not applicable standard
Power Supply
HI301N-1
HI301N-2
HI311N-1
HI311N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Dimensions 180 x 180 x 70 nm (7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
HI302N & HI312N
Auto-Reverse Stirrers
HI302N normal stirrer and HI312N autospeed stirrer allow to stir the fluid
in both directions and are ideal for powder mixing applications to ensure a
homogeneous final product and complete dissolution of hard‑to‑wet pow‑
ders. The reverse stirring period is adjustable from 30 seconds to 3 minutes.
When set to 1minute, the fluid will rotate in one direction for minute and
then reverse its rotation for another minute at the desired speed in a repeat‑
ed cycle until the stirrer is switched off.

9
HI301N HI311N
Maximum
Stirring Capacity
2.5 liters
(0.66 gallons)
5 liters
(1.3 gallons)
Speed Range
Low
High
100 to 500 rpm
100 to 800/ 1000 rpm
Auto-Speed not applicable standard
Power Supply
HI301N-1
HI301N-2
HI311N-1
HI311N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Dimensions 180 x 180 x 70 nm (7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
FUNCTIONAL DESCRIPTION AND SPECIFICATIONS
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)
3. REVERSE PERIOD knob with the ON/ OFF and continuously variable
selection of inversion cycle time in minutes, from 0.5 to 3 minutes
HI302N HI312N
Maximum
Stirring Capacity
2.5 liters
(0.66 gallons)
5 liters
(1.3 gallons)
Speed Range
Min.
Max.
100 rpm
100 to 1000 rpm
Auto-Speed not applicable standard
Power Supply
HI302N-1
HI302N-2
HI312N-1
HI312N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Dimensions 180 x 180 x 70 nm (7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
HI303N
Two-Speed Stirrer with Tacho-meter
HI303N stirrer incorporates an LCD tachometer.
This model allows precise stirring repeatability by using two separate rang‑
es. In each range, the speed can be set precisely.
1. rpm LCD displays the rpm speed
2. Power indicator (LED lights up when the stirrer is powered)
3. ON/ OFF/ Speed knob, to turn the stirrer ON and OFF, and set the
stirring speed (continuously variable up to the maximum)
4. HIGH/ LOW switch (for selecting low speed range or high speed range)

10
FUNCTIONAL DESCRIPTION AND SPECIFICATIONS
HI303N
Maximum
Stirring Capacity
2.5 liters
(0.66 gallons)
Speed Range
Low
High
100 to 500 rpm
100 to 800/ 1000 rpm
Tachometer 4 digit LCD
Power Supply
HI303N-1
HI303N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F);
RH max 95%
Dimensions 180 x 180 x 70 nm
(7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
HI304N
Auto-Reverse Stirrer with Tacho-meter
HI304N is a heavy‑duty stirrer with a built‑in tachometer. An ad‑
vanced circuit allows to reverse the direction of the stir at an interval that can
be adjusted from 30 seconds up to 3 minutes.
1. rpm LCD displays the rpm speed
2. Power indicator (LED lights up when the stirrer is powered)
3. ON/ OFF/ Speed knob, to turn the stirrer ON and OFF, and set the
stirring speed (continuously variable up to the maximum)
4. REVERSE PERIOD knob with the ON/ OFF and continuously variable
selection of inversion cycle time in minutes, from 0.5 to 3 minutes

11
FUNCTIONAL DESCRIPTION AND SPECIFICATIONS
HI303N
Maximum
Stirring Capacity
2.5 liters
(0.66 gallons)
Speed Range
Low
High
100 to 500 rpm
100 to 800/ 1000 rpm
Tachometer 4 digit LCD
Power Supply
HI303N-1
HI303N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F);
RH max 95%
Dimensions 180 x 180 x 70 nm
(7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
HI304N
Maximum
Stirring Capacity
2.5 liters
(0.66 gallons)
Speed Range
Min.
Max.
100 rpm
800 to 1000 rpm
Tachometer 4 digit LCD
Power Supply
HI304N-1
HI304N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Dimensions 180 x 180 x 70 nm (7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
HI322N & HI324N
Timer-Controlled Stirrers
HI322N and HI324N are autospeed stirrers equipped with timer control
to start and automatically stop the stirring process after an user‑selectable
period (from 5 minutes to 2 hours). They are the ideal stirrers for routine
applications where the required stirring time is known, and for non‑Newto‑
nian fluids whose viscosities change during stirring or Newtonian fluids up to
5 liters capacity.
1. rpm LCD displays the rpm speed
2. Power indicator (LED lights up when the stirrer is powered)
3. TIME knob for setting the stirring time from 5 minutes to 2 hours
4. Speed knob, to turn the stirrer ON and OFF, and set the stirring speed
(continuously variable up to the maximum)
5. START/ RESET switch for starting and resetting the time control

12
HI322N HI324N
Maximum
Stirring Capacity
5 liters
(1.3 gallons)
5 liters
(1.3 gallons)
Speed Range
Min.
Max.
100 rpm
800 to 1000 rpm
Timer Range user selectable from 5 minutes to 2 hours
Tachometer not applicable 4 digit LCD
Auto-Speed standard standard
Power Supply
HI322N-1
HI322N-2
HI324N-1
HI324N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Dimensions 180 x 180 x 70 nm (7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
• Make sure that the SPEED knob (on the front panel) and the ON/ OFF
switch (on the rear panel) are in OFF position.
• Place a beaker or glass container at the center of the top of the stirrer,
and place the stirring bar in the beaker.
FUNCTIONAL DESCRIPTION AND SPECIFICATIONS
OPERATIONAL GUIDE HI300N & HI310N

13
HI322N HI324N
Maximum
Stirring Capacity
5 liters
(1.3 gallons)
5 liters
(1.3 gallons)
Speed Range
Min.
Max.
100 rpm
800 to 1000 rpm
Timer Range user selectable from 5 minutes to 2 hours
Tachometer not applicable 4 digit LCD
Auto-Speed standard standard
Power Supply
HI322N-1
HI322N-2
HI324N-1
HI324N-2
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
110/ 115 Vac, 50/ 60 Hz
220/ 240 Vac, 50/ 60 Hz
Installation Category II
Cover Material AISI 316 stainless steel
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Dimensions 180 x 180 x 70 nm (7.1 x 7.1 x 2.8’’)
Weight 1.4 kg (3.1 lb.)
OPERATIONAL GUIDE HI300N & HI310N
• Pour the liquids to be mixed into the beaker.
Do not fill up to the brim and leave sufficient space to prevent spillage
during stirring.
• Connect the power cord to the mains and turn the stirrer on.
• Adjust the SPEED knob slowly until the required stirring speed is
achieved.
• Allow sufficient time for the mixing operation to attain uniform rota‑
tional flow.
• When stirring is complete, turn the SPEED knob to the OFF position.
• If no further stirring is required, turn the stirrer off.

14
• Make sure that the SPEED knob and the ON/ OFF switch are in the OFF
position.
• Place a beaker or glass container at the center of the top of the stirrer
and place the stirring bar in the beaker.
• Pour the liquids to be mixed into the beaker. Do not fill up to the brim
and leave sufficient space to prevent spillage during stirring.
• Connect the power cord to the mains and turn the stirrer on with the
ON/ OFF switch.
OPERATIONAL GUIDE HI301N, HI303N & HI311N
• Select the low or high range with the HIGH/ LOW switch as required.

15
OPERATIONAL GUIDE HI301N, HI303N & HI311N
• Adjust the SPEED knob slowly until the required stirring speed is
achieved. Allow sufficient time for the mixing operation to attain uni‑
form rotational flow. The stirring speed is indicated in the rpm LCD
(HI303N only).
• When stirring is complete, turn the SPEED knob to the OFF position.
• If no further stirring is required, turn the stirrer off.
OPERATIONAL GUIDE HI302N, HI304N & HI312N
• Make sure that the SPEED knob and the ON/ OFF switch are in the OFF
position.
• Place a beaker or glass container at the center of the top of the stirrer
and place the stirring bar in the beaker.
• Pour the liquids to be mixed into the beaker. Do not fill up to the brim
and leave sufficient space to prevent spillage during stirring.

16
• Connect the power cord to the mains and turn the stirrer on with the
ON/ OFF switch.
OPERATIONAL GUIDE HI302N, HI304N & HI312N
• Set the REVERSE PERIOD knob to the desired reverse stirring period from
30 seconds to 3 minutes. E.g. if set to one minute, the fluid will rotate
in one direction for one minute and then reverse its rotation for another
minute in a repeated cycle until the stirrer is turned off.
• Adjust the SPEED knob slowly until the required stirring speed is
achieved. Allow sufficient time for the mixing operation to attain uni‑
form rotational flow. The stirring speed is indicated in the rpm LCD for
HI304N.
• When stirring is complete, turn the SPEED knob to the OFF position.
• If no further stirring is required, turn the stirrer off.

17
OPERATIONAL GUIDE HI322N AND HI324N
• Make sure that the SPEED knob and the ON/ OFF switch are in the OFF
position and the START/ RESET switch is in RESET position.
• Place a beaker or glass container at the center of the top of the stirrer
and place the stirring bar in the beaker.
• Pour the liquids to be mixed into the beaker. Do not fill up to the brim
and leave sufficient space to prevent spillage during stirring.
• Connect the power cord to the mains and turn the stirrer on with the
ON/ OFF switch.
• Set the TIME knob to the desired stirring time from 5 minutes to
2 hours. Then set the START/ RESET switch to START. The stirrer will
only start stirring when the START switch is in the START position and
will end when the selected stirring time has passed.

18
OPERATIONAL GUIDE HI322N AND HI324N
• Adjust the SPEED knob slowly until the required stirring speed is
achieved.
• Allow sufficient time for the mixing operation to attain uniform rota‑
tional flow.
The stirring speed is indicated in the rpm LCD for HI324N.
• When stirring is complete, turn the SPEED knob to the OFF position.
• If no further stirring is required, turn the stirrer off.
ACCESSORIES
Code Description
HI731320 Magnetic stir bar (10 pcs.)
MAN300 06/18

Hanna Instruments reserves the right to modify the design, construction
or appearance of its products without advance notice.
Warranty The products are guaranteed for two years against defects
in workmanship and materials when used for their intended
purpose and maintained according to instructions. Damage
due to accidents, misuse, tampering or lack of prescribed
maintenance is not covered. If service is required, contact
your local Hanna Instruments Office.
If under warranty, report the model number, date of
purchase, serial number and the nature of the problem. If
the repair is not covered by the warranty, you will be notified
of the charges incurred.
If the instrument is to be returned to Hanna Instruments,
first obtain a Returned Goods Authorization number from the
Technical Service department and then send it with shipping
costs prepaid. When shipping any instrument, make sure it
is properly packed for complete protection.
Before using this product, make sure it is
entirely suitable for your specific application
and for the environment in which it is used.
Any variation introduced by the user to
the supplied equipment may degrade the
meters’ performance.
Unplug the stirrer from the power supply
before replacing the fuse.
To avoid damages or burns, do not put the
stirrer in microwave ovens. For your and the
stirrer’s safety, do not use or store the stirrer
in hazardous environments.
Recommendations
for Users

Printed in ROMANIA
World
Headquarters
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
www.hannainst.com
Local Office
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
Phone: [phone]
Fax: [phone]
e‑mail: [email protected]
MAN300