(Hotplate) Magnetic
Stirrer
User
Manual
MS-H280-Pro LED Digital Hotplate Magnetic Stirrer
MS-PA LED Digital Magnetic Stirrer
MS-PB Classic Magnetic Stirrer
Please read the User Manual carefully before use, and follow all
operating and safety instructions!
Technical specifications and outline are subject to change without prior
notice.
Contents
Preface.................................................................................1
Service................................................................................. 1
Warranty ..............................................................................1
1. Safety Instructions.......................................................2
2. Proper Use ...................................................................3
3. Inspection ....................................................................4
3.1 Receiving Inspection .............................................4
3.2 Listing of Items ..................................................... 4
4. Control.........................................................................4
4.1 Control elements....................................................4
4.2 Display...................................................................7
5. Trial Run......................................................................8
6. Function: Heating ( Digital hotplate model )...............8
6.1 Working with external temperature sensor ............9
6.2 Residual heat warning（HOT） ...........................9
7. Stirring.......................................................................10
8. Faults .........................................................................10
9. Maintenance and Cleaning ........................................ 11
10. Associated Standards and Regulations ...................... 11
11. Specifications ............................................................12
12. Ordering Information ................................................14
1
Preface
Welcome to the “ (Hotplate) Magnetic Stirrer”. Users
should read this Manual carefully, follow the instructions
and procedures, and be aware of all the cautions when using
this instrument.
Service
When help needed, you can always contact the Service
Department of manufacturer for technical support in the
following ways:
Please provide the customer care representative with the
following information：
• Serial number（on the rear panel）
• Certification
• Description of problem (i.e., hardware or software)
• Methods and procedures adopted to resolve the problems
• Your contact information
Warranty
This instrument is warranted to be free from defects in
materials and workmanship under normal use and service,
for a period of 24 months from the date of invoice. The
warranty is extended only to the original purchaser. It shall
not apply to any product or parts which have been damaged
on account of improper installation, improper connections,
misuse, accident or abnormal conditions of operation.
For claims under the warranty please contact your local
supplier. You may also send the instrument directly to
manufacturer, enclosing the invoice copy and by giving
reasons for the claim.
2
1. Safety Instructions
Warning!
• Read the operating instructions carefully
before use.
• Ensure that only trained staff works with the
instrument.
Risk of burn!
• Caution when touch the housing parts and
the hotplate (heating model) which can reach
temperature of
280
°
C.
• Pay attention to the residual heat after
Protective ground contact！
• Make sure that socket must be grounded
(protective ground contact) before use.
• When working wear personal safety guards to avoid the
risk from:
- Splashing and evaporation of liquids
- Release of toxic or combustible gases
• Set up the instrument in a spacious are on a stable, clean,
non-slip, dry and fireproof surface. Do not operate the
instrument in explosive atmospheres, with hazardous
substances or under water.
• Gradually increase the speed, reduce the speed if:
- Stirring bar breaks away due to high speed
- The instrument is not running smoothly, or container
moves on the base plate
• Temperature must always be set at least 50
℃
lower than
the fire point of the media used.
• Be aware of hazards due to:
- Flammable materials or media with a low boiling
temperature
- Overfilling of media
- Unsafe container
• Process pathogenic materials only in closed vessels.
• Check the instrument and accessories prior to each use.
Do not use damaged components. Safe operation is only
guaranteed with the accessories described in the
“Accessories” chapter. Accessories must be securely
attached to the device and can not come off by themselves.
Always disconnect the plug before fitting accessories.
• When the external temperature sensor needed, the tip of
the measuring sensor must be at least 5-10mm from vessel
bottom and wall.
3
• The instrument can only be disconnected from the main
power supply by pulling out the main or the connector plug.
• The voltage stated on the label must correspond to the
main power supply.
• Ensure that the main power supply cable does not touch
the hotplate. Do not cover the device.
• The instrument may only be opened by experts.
• Keep away from high magnetic field.
2. Proper Use
The instrument is designed for mixing and/or heating
liquids in schools, laboratories or factories.
• Observe the minimum distances between the devices,
between the device and the wall and above the assembly
(min. 100 mm)
>100mm
Figure 1
This device is not suitable for using in residential areas or
other constraints mentioned in Chapter 1.
4
3. Inspection
3.1 Receiving Inspection
Unpack the equipment carefully and check for any damages
which may have arisen during transport. Please contact
manufacturer/supplier for technical support.
4. Control
4.1 Control elements
Note:
If there is any apparent damage to the system,
please do not plug it into the power line.
3.2 Listing of Items
The package includes the following items:
Probe
( Hotplate model
)
LED Display
Speed Control Knob
Temperature Control Knob
Items
Qty
1
Power cable 1
User Manual 1
Table 1
Figure 2 Digital hotplate model
5
LED Display
Speed Control Knob
Speed Control Knob
Figure 3 Digital model
Figure 4 Classic model
Figure 5
6
Items
Descriptions
Digital hotplate
model
Temperature Control
Set the temperature parameters. The function “heating” is switched ON or
OFF via push ON/OFF knob.
Knob
Heat
Speed Control Knob Stir
Set the rotary speed. The function “Stirring” is switched ON or OFF via
push ON/OFF knob.
LED Display
LED displays the real working state and all settings.
Probe
When the external temperature sensor PT1000 is plugged in, probe icon
is lit.
Power Switch
Switch ON or OFF the instrument.
Digital model
Temperature Control
Set the rotary speed. The function “Stirring” is switched ON or OFF via
push ON/OFF knob.
Knob
Stir
LED Display
LED displays the real working state and all settings.
Power Switch
Switch ON or OFF the instrument.
Classic model
Speed Control Knob
Stir
The stirring function is switched ON by rotating the knob.
Power Switch
Switch ON or OFF the instrument.
Table 2
7
Characters
Descriptions
Temperature
display area
When heating function was switched ON,
LED displays the temperature setting
value and shifts to real value in 5 seconds.
When the heating function is switched
OFF and the hotplate temperature is still
above 50
°
C, LED displays “Hot”,
otherwise LED displays OFF.
Speed display
area
When stirring function was switched ON,
LED displays the speed setting value and
flashes. The setting value does not flash
until real speed reaches the set point.
4.2 Display
Speed display area
Temperature display area
Speed display area
Figure 6 Digital hotplate model
Figure 7 Digital model
Characters Descriptions
Speed display
area
When stirring function was switched
ON, LED displays the speed setting
value and flashes. The setting value
does not flash until real speed reaches
the set point.
Table 4
Table 3
8
5. Trial Run
• Make sure the required operating voltage and power
supply voltage match.
• Ensure the socket must be properly grounded.
• Plug in the power cable，ensure the power is on and begin
initializing.
• Add the medium into the vessel with an appropriate
stirring bar.
• Place vessel on the work plate.
• Set the target stirring speed and begin.
• Observe the stirring bar and LED display (digital model).
• Set the target temperature and start heating.
• Observe the LED display (digital hotplate model).
• Stop the heating and stirring functions.
If these operations above are normal, the device is ready to
operate. If not, the device may be damaged during
transportation, please contact manufacturer/supplier for
technical support.
Warning !
Forbid to transfer the vessel when the instrument
working.
6. Function: Heating ( Digital
hotplate model )
The device is controlled by digital temperature control
technology, which has two separate safe circuits. The
hotplate is kept at a constant temperature by a digital
control circuit. The hotplate temperature can also be
monitored from a separate, adjustable safe circuit. The two
temperature sensors internal for temperature control are
built into the hotplate. The single external PT1000 can
monitor the temperature of sample.
• Plug in the external PT1000.
• Set the temperature via rotating the temperature
control knob slowly to the target value.
•
When the heating function is switched on, the LED
displays the temperature value on the left-hand side.
•
The heating function is switched on or off by pushing
heating knob.
The instrument automatically displays the last running
speed and temperature parameters once turned on.
Generally, the LED screen cannot display the actual
temperature of sample in the vessel or hotplate surface,
temperature differences as following:
9
- Hotplate center and outer edge.
- The sample in the vessel and hotplate surface.
In order to ensure the accuracy of the temperature inside the
container, please use the external temperature sensor
PT1000.
6.1 Working with external temperature
sensor
Figure 6
The external temperature sensor PT1000 is the
manufacturer’s standard accessory. When PT1000 sensor is
connected and rotate the temperature control knob, LED
displays the temperature setting value and shifts to real
value in 5 seconds. Safe circuit controls hotplate
temperature under 320
°
C. Comparing with the temperature
control of the hotplate, the external temperature sensor can
control the medium’s temperature more precise. The
heating function will be stopped automatically under
abnormal conditions. Please operate follow the instructions
below:
• Switch OFF the instrument.
• Ensure the external temperature sensor is inserted in
the media heated.
• Switch ON the instrument and run heating function.
If the heating function does not work, please contact
manufacturer/supplier for technical support.
6.2 Residual heat warning（HOT）
In order to prevent the risk of burns from a hotplate, digital
hotplate has a residual heat warning function. When the
heating function is switched off and the heating plate
temperature is still above 50°C, “Hot” will flash to warn
that there is a hazard of burns from the hotplate. When the
unit is powered off, the LED screen displays the
temperature of hotplate and Hot in turn. When the hotplate
temperature drops to below 50
°
C, the unit will
automatically switch off. If users want to turn off the LED
immediately, just pull out the plug directly. When the plug
is pulled out, the residual heat warning function cannot be
10
run.
7. Stirring
The function “stirring” of LED digital model is switched on
or off via pushing on/off speed control knob. The speed
range of 200 to 1500 rpm and in steps of 10 rpm.
The function “stirring” of classic model is switched on or
off via rotating speed control knob. The speed range of 0 to
1500 rpm.
8. Faults
• Instruments can’t be power ON
- Check whether the power line is unplugged
- Check whether the fuse is broken or loose
• Fault in power on self test
- Switch OFF the unit, then switch ON and reset
the instruments to factory default setting.
• Stir speed cannot reach set point
- Excessive medium viscosity may cause abnormal
speed reduction of the motor
• Unit cannot be powered off when switched off.
- Check if the residual heat warning function is still
ON and hotplate temperature is above 50℃ (the
LED screen still work and “Hot” flash).
If these faults are not resolved, please contact
manufacturer/supplier.
11
9. Maintenance and Cleaning
• Proper maintenance can keep instruments working
properly and lengthen its lifetime.
• Do not spray cleanser into the instrument when
cleaning.
• Unplug the power line when cleaning.
• Only use recommended cleansers:
Dyes
Isopropyl alcohol
Construction materials
Water containing tenside
/ Isopropyl alcohol
Cosmetics
Water containing tenside
/ Isopropyl alcohol
Foodstuffs
Water containing tenside
Fuels
Water containing tenside
• Before using other method for cleaning or
decontamination, the user must ascertain with the
manufacturer that this method will not harm the
instrument. Wear the proper protective gloves during
cleaning of the instrument.
Note:
• Electronic device can not clean with
cleanser.
• If you require maintenance service, must be
cleaned the instrument in advance to avoid
pollution of hazardous substances, and to
send back into original packing.
• If the instrument will not use for a long time,
please switch off and place in a dry, clean,
room temperature and stable location.
10.
Associated Standards and
Regulations
Construction in accordance with the following safety
standards:
EN 61010-1
UL 3101-1
CAN/CSA C22.2(1010-1)
EN 61010-2-10
Construction in accordance with the following EMC
standards:
EN 61326-1
Associated EU guidelines: EMC-
guidelines: 89/336/EWG Instrument
guidelines: 73/023/EWG
12
Items
Specifications
Digital (heating)
model
Classic
model
Voltage [VAC]
*100~120/200~240
100~240
Frequency [Hz]
50/60
50/60
Power [W]
*515/15
10
Stirring point position
quantity
1
1
Max. stirring quantity
(H
2
O) [l]
3
3
Max. magnetic bar [
L×Ø
,
mm]
50
50
Motor type
DC motor
Max. power input of
motor [W]
5
5
Max. power output of
motor [W]
3
3
Speed range [rpm]
200 – 1500,
increment:10
0 – 1500
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
NOTE: This equipment has been tested and found to
comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may
cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be
required to correct the interference at his own expense.
11.
Specifications
13
Items
Specifications
Digital(heating)
model
Hotplate
model
Rotary speed display
LED
Scale
Plate material
*Ceramic coated/Plastic
Dimensions of
workplate (mm)
φ135
φ135
*Heating power [W]
500
-
*Temperature range [
°
C]
RT-280,
increment:1
-
*Temperature display
[
°
C]
LED
-
*Temperature display
accuracy [
°
C]
1
-
*The safe temperature
of hotplate [℃]
320
-
*Temperature sensor in
medium
PT1000
-
*Control accuracy of
heating temperature
with temperature sensor
[℃]
±0.5
-
Table 5
Items
Specifications
Digital (heating)
model
Classic
model
*Residual heat warning
50℃
-
Dimensions (mm)
*220
×
160
×
95
220
×1
60
×
75
Weight [kg]
*1.4/0.7
0.7
Permitted ambient
temperature [
°
C]
5－40
Permitted relative
humidity
80%
Protection class acc. to
DIN 60529
*IP21/IP42
14
12. Ordering Information
Cat No.
Descriptions
Accessories
18900016
PT1000-A Temperature sensor for digital hotplate model, length
230mm
18900136
PT1000-B Temperature sensor with glass coated, 230mm
18900148
Support clamp of PT1000
18900080
Reaction block for 50ml round bottom flask(one flask capacity)
18900081
Reaction block for 100ml round bottom flask(one flask capacity)
18900082
Reaction block for 250ml round bottom flask(one flask capacity)
18900083
Reaction block for 500ml round bottom flask(one flask capacity)
18900006
Stirrer bar（10mm x 6mm），1pc/pk
18900007
Stirrer bar（15mm x 8mm），1pc/pk
18900008
Stirrer bar（20mm x 8mm），1pc/pk
18900009
Stirrer bar（25mm x 8mm），1pc/pk
12500005
Stirrer bar（30mm x 6mm），1pc/pk
18900011
Stirrer bar（40mm x 8mm），1pc/pk
12500004
Stirrer bar（50mm x 8mm），1pc/pk
18900015
Stirrer bar remover，1pc/pk
Table 6
