Hanna Instruments hi 3050n User Manual

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Fig. 3

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. Then the stirrer on with the
ON/OFF      switch      (except      HI  190M,
HI 190MB and  HI 200M).

5. Adjust the SPEED knob slowly until the

required stirring speed is achieved.  Allow
sufficient time for the mixing operation to
attain uniform rotational flow.

6. 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.

Models:  HI 301N, HI 303N normal stirrers and
HI 311N, HI 313N Auto-Speed stirrers

istrstirR2.p65

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speed control eg. in electrolysis applications.
The selectable HIGH/LOW range allows you to
set the speed precisely.

1. Make sure that the SPEED knob (B) and

the  ON/OFF  switch  (L) 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. Then the stirrer on with the
ON/OFF switch.

5. Select the low or high range with the

HIGH/LOW switch (C) as required.  (See
Tables 1 and 2 for the speed range of each
stirrer.)

HI 301N or
HI 303N

HI 300N

HI 310N

1. Newtonian fluids up to

2.5 litres

2. Repetitive stirring in

Newtonian fluids up to
2.5 litres

3. Non-Newtonian fluids

up to 5 litres whose
viscosities change
during stirring or
Newtonian fluids up to 5
litres or mixing opera-
tion where load
changes during stirring.