Hanna Instruments hi 3050n User Manual

Model

HI 310N

HI 311N

HI 312N

HI 313N

HI 314N

HI 322N

HI 324N

Capacity

(Ltr)

2.5

Speed Range

(rpm)

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



4-digit LCD
for rpm
4-digit LCD
for rpm



4-digit LCD
for rpm

Timer

Control



5 min. to

2 hr.

5 min. to

2 hr.

Size

LxBxH (in mm)

180x180x70

Weight

(Kg)

1.5

Table 2: Auto-speed Stirrers

Application

Electrodes

1. Biomedical

HI1413B, HI1083B, HI1330B, HI131B,
HI5311, HI5412, HI2110.

2. Blood

HI1083B, HI1413B, HI1330B

3. Breweries

HI1910B, HI1911B, HI1131B

4. Distilled Water

HI1053B, HI1043B, HI1911B

5. Field use

HI1230B, HI1210S

6. Flow Application

HI2110B, HI2114B, HI1135B, HI115S

7. Gel

HI1413B, FC200B, HI1063, HI1053B

8. General Purpose

HI1230B, HI1131B, HI1210S, HI332B

9. High Pressure

HI2114B, HI2110B

10. Latex

HI1030B, HI1131B, HI1043B

11. Low Conductivity

HI1413B, FC220, HI1332B

12. Medium Pressure

HI1134B, HI1910B, HI1912B

13. M i l k

FC210B, FC200B

14. Non-aqueous

HI1043B, HI1332B, HI1911B

15. Oil

FC220, HI1413B, HI1053B

16. Paints

HI1053B, HI1030B, HI1043B

17. Paper

HI1413B

18. Photographic Applications

HI1910B, HI1230B, HI1210S

19. Process-General Purpose

HI1910B, HI1912B, HI1230B, HI1134B

20. Process High Temp./Pressure

HI1110S, HI1130B, HI2114B

21. Reacting Samples

HI1040S, HI1043B, HI1312S, HI332B,
HI1910B

22. Research Laboratory

HI1043B, HI1040S, HI1131B, HI111S,
HI5311, HI5412, HI2110

23. Semisolid (Cheese, food, etc.)

HI2031B, HI2020S, FC200B, FC210B

24. Slurries

HI1911B, HI1053B

25. S o i l

HI1230B, HI1131B

26. Strong Acids

HI1043B, HI1040S

27. Strong Alkalis

HI1043B, HI1040S

28. Vials, Test Tubes, Flask Application HI1331B, HI1330B, HI1270/35, HI343B

29. Yogurt

HI1413B, FC210B, FC200B

30. Plating Industry

HI3230B (ORP-PT), HI3430B (ORP-PT),
HI4430 (ORP-Au)

31. Waste Water Treatment

HI1910B, HI1912B, HI1134B, HI230B

(ORP-PT), HI3430B (ORP-PT), HI4430B

(ORP-Au)

Electrode Application Chart: Only for lab application

Table 3

istrstirR2.p65

GENERAL DESCRIPTION

The Hanna series of bench top electromagnetic
stirrers are designed with simplicity of use for
stirring and mixing solutions in a wide range of
laboratory applications. Eighteen models are
available in an extensive range covering:

•

mini-stirrers

•

general purpose stirrers

•

dual-speed range

•

inverse cycle stirring

•

rpm indication

•

pH/ºC measurement

•

timer control

•

constant speed with feedback 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 effec-
tively 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 stirrers is equipped with
an opto-sensor which monitor the speed and a
speed limiter circuit to prevent hazardous op-
eration when the load is suddenly removed.
The power required to effectively stir a fluid is
influenced by the torque load on the stirrer
which, in turn, 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. The mini and normal stirrers are ideal
for Newtonian fluids.