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These Instruments are in

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Instruction ManualInstruction Manual

Instruction Manual

MagneticMagnetic

Magnetic

StirrersStirrers

Stirrers

istrstirR2.p65

Dear Customer,

Thank you for choosing a Hanna product.

Please read this instruction manual carefully

before using the meter. This manual will pro-

vide you with the necessary information for a

correct use of the instrument. If you need

additional technical information, do not hesi-

tate to e-mail us at tech@hannainst.com.

These instruments are in compliance with

the

directives.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

Preliminary Examination ............................ 3

Specifications ........................................... 3

General Description ................................... 6

Mini and General Purpose Stirrers ............. 10

Dual-Speed Range Stirrers ...................... 11

Reversible Stirrers .................................. 13

Timer Control Stirrers .............................. 14

Stirrers with Incorporated pH Meter .......... 16

Stirrers with pH Meter for Manual Titration . 18

Warranty ................................................. 20

CE Declaration of Conformity..................... 21

Optional Accessories ............................... 22

Summary of content (12 pages)

PAGE 1
istrstirR2.p65 1 2 Instruction Manual Magnetic Stirrers Dear Customer, Thank you for choosing a Hanna product. Please read this instruction manual carefully before using the meter. This manual will provide you with the necessary information for a correct use of the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. These instruments are in compliance with the directives. TABLE OF CONTENTS Preliminary Examination ............................
PAGE 2
istrstirR2.p65 3 4 25 mm length x 7 mm diameter for other models, 50 mm length x 7 mm diameter HI 3050N stirrers with incorporated pH meter: Range: 0.00 to 14.00 pH 0.0 to 100ºC Resolution: 0.01 pH 0.1ºC Accuracy: ±0.01 pH ±0.4ºC Input Resistance: 1012 Ohm Calibration: Double-point in neutral buffer solution plus an acid or alkaline buffer solution Offset Regulation: ±1 pH Slope: 85% to 105% Temperature Compensation: Completely automatic with HI 7667 temperature probe from 0ºC to 100ºC.
PAGE 3
istrstirR2.p65 5 6 Table 2: Auto-speed Stirrers Capacity Speed Range (Ltr) (rpm) Model HI 310N 5 HI 311N 5 HI 312N 5 HI 313N 5 HI 314N 5 HI 322N 2.5 HI 324N 5 Min: 100 Max: 1000 Min: 100 to 500 Max: 100 to 1000 Min: 100 Max: 1000 Min: 100 Max: 1000 Min: 100 to 500 Max: 100 to 1000 Min: 100 Max: 1000 Min: 100 Max: 1000 Display Timer Control   180x180x70 1.5   180x180x70 1.5   180x180x70 1.5 4-digit LCD for rpm 4-digit LCD for rpm  180x180x70 1.5  180x180x70 1.
PAGE 4
istrstirR2.p65 7 8 The mini-stirrers (HI 30XN series) cater up to 2.5 litres. For some fluids like oil and clay, the viscosity changes during the stirring process and it is 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 with non-Newtonian fluids where the viscosity changes during stirring.
PAGE 5
istrstirR2.p65 9 10 indication in ºC pH : Switches display to pH indication I. pH/ºC LCD display the selected measurement depending on the position of H. J. OFFSET knob for calibration of pH in neutral buffer solution (pH 7.01 at 25ºC). K. SLOPE knob for calibration of pH in acid (pH 4.01 at 25ºC) or alkaline (pH 10.01 at 25ºC) solution. L. SET/MEASURE SET/MEASURE, selector switch for LCD display M. SET-POINT SET-POINT, adjust the set-point of pH N.
PAGE 6
istrstirR2.p65 11 12 OPERATION 1. Make sure that the SPEED knob (B) and the ON/OFF switch (L) (except HI 190M, HI 190MB and HI 200M) are in the OFF positions. 2. Place a beaker or glass container on top of the stirrer and place the stirring bar at the centre of the beaker base. 3. Pour the liquids to be mixed into the beaker. Do not fill the brim and leave sufficient space to prevent spillage during stirring. 4. Connect power cable and switch on the power supply.
PAGE 7
istrstirR2.p65 13 14 6. Adjust the SPEED knob slowly until the required stirring speed is achieved. Allow sufficient time for the mixing operation to attain uniform rotational flow. The stirring is indicated in the rpm LCD (D) for models HI 303N and HI 313N. 7. After stirring is completed, turn the SPEED knob to off. If no further stirring is required switch off the stirrer and disconnect the power supply.
PAGE 8
istrstirR2.p65 15 16 As these are Auto-Speed stirrers with automatic feedback control, they are ideal for nonNewtonian fluids whose viscosities change during stirring or Newtonian fluids up to 5 litres capacity. APPLICATIONS USE 1. Routine stirring appli- HI 322N cation with a predetermined stirring time 2. Repetitive stirring in multiple batches with the same stirring speed and predetermined stirring time. HI 324N sufficient time for the mixing operation to attain uniform rotational flow.
PAGE 9
istrstirR2.p65 17 18 APPLICATIONS 1. Newtonian fluids up to 2.5 litres. USE HI 305N 2. Non-Newtonian fluids HI 315N up to 5 litres whose viscosities change during stirring or Newtonian fluids up to 5 litres or mixing operation where load changes during stirring The pH meter incorporated in the stirrer should be calibrated before using. Calibration: 1. Connect the pH electrode and temperature probe to the stirrer.
PAGE 10
istrstirR2.p65 19 20 Table 4 7. The calibration is now completed and the stirrer is ready for use. WARRANTY All Hanna Instruments meters are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The Probes are warranted for a period of six months. Calibration: 1. Connect the HI 1217D electrode to the rear input DIN socket of HI 3050N. 2. Connect power cable and switch on the power supply.
PAGE 11
istrstirR2.p65 21 22 CE DECLARATION OF CONFORMITY OPTIONAL ACCESSORIES HI 76502/P Micro stir bar HI 76503/P Standard stir bar 21 HI 7004L pH 4.01 Buffer Solution HI 7006L pH 6.86 Buffer Solution HI 7007L pH 7.01 Buffer Solution HI 7009L pH 9.18 Buffer Solution HI 7010L pH 10.
PAGE 12
istrstirR2.p65 23 24 OTHER PRODUCTS FROM HANNA • Chemical Test Kits • Colorimeters • Conductivity and TDS Meters • Dissolved Oxygen Meters • Dosing Pumps • Electrodes (pH and ORP) • Hygrometers • pH Meters • Magnetic Stirrers • Process Instrumentation • Solutions and Accessories • Testers (pH, µS/cm, pNa, TDS, ORP) • Thermometers ISTRSTIRR2 11/00 H T T P : / / W W W . H A N N A I N S T .