Ms7-H550-S LED Digital 7 Inch Magnetic Hotplate Stirrer

• After-sales Service: Online After-Sales Service
• Warranty: 1 Year
• Application: Industry, School, Lab
• Customized: Non-Customized
• Certification: CE
• Structure: Desktop
• Model NO.: MS7-H550-S
• Type: Hot Plate
• Work Plate Dimension: 184X184 (7 Inch)
• Motor Type: Shaded Pole Motor
• Work Plate Material: Glass Ceramic
• Speed Range: 0-1500rpm
• Heating Temperature Range: Room Temp.-550°c
• Max. Stirring Quantity[H2O]: 10L
• Transport Package: Standard Carton Export
• Specification: 215x360x112
• Trademark: West Tune
• Origin: China
• HS Code: 8479820090
• Production Capacity: 1000

Product Description

MS7-H550-S LED Digital 7 Inch Magnetic Hotplate Stirrer

7 inch square hotplate magnetic stirrers are widely used in chemical synthesis, physical and chemical analysis, bio-pharmaceuticals and other fields.

PID temperature technology precise controls heating process, rapidly reaches target temperature and enhances control accuracy, heating temperature up to 550°C.

7 inch square magnetic stirrers have glass ceramic plate extremely resistant to corrosion and easy to clean. The heating models are suitable for external temperature sensor PT1000, display and control actual medium temperature.



Feature:

- LED display target and actual temperatures
- External temperature sensor PT1000 is available, display and control actual medium temperature, control accuracy of ±1°C
- Separated safety circuits, fixed safety temperature of 580ºC, automatically stops heating once exceed secure temperature
- HOT warning indicates residual hotplate temperature. LCD display would show "Hot" when hotplate temperature over 50°C warning point, even if switched off


Specification:
 

Dimension of work plate [mm]	184x184 (7 inch)
Work plate material	Glass ceramic
Motor type	Shaded pole motor
Motor rating input [W]	15
Motor rating output [W]	1.5
Power [W]	1030
Voltage [VAC]	100-120/200-240
Frequency [Hz]	50/60
Stirring positions	1
Max. stirring quantity[H2O], L	10
Max. magnetic bar(L x Ø) [mm]	80
Speed range [rpm]	0-1500
Speed display	Scale
Heating output [W]	1000
Heating temperature range [°C]	RT-550, increment 5
Control accuracy of work plate [°C]	±10
Safety temperature [°C]	580
Temperature display	LED
Temperature display accuracy [°C]	±1
External temperature sensor	PT1000
Control accuracy with external temperature sensor PT1000 [±°C]	±0.5
Heating warning [ºC]	50°C
Remote control (RS232 interface)	N/A
Protection class according to DIN EN60529	IP21
Dimension [W x D x H] mm	215x360x112
Weight [kg]	4.5
Permissible ambient temperature [ºC]	5-40
Permissible relative humidity	80%

FAQ-Magnetic (Hotplate) Stirrer:

1.How viscous are samples that magnetic stirrers are suitable for mixing?
  Answer: 100mPas, equivalent to viscosity of olive oil (cooking oil), beyond which the mixing volume and speed should reduce accordingly.  

2.Why the temperature rise is too slow in hotplate stirrers?
  Answer: The temperature rise of magnetic stirrers is influenced by many factors like: Excessive airflow through the fume hood Uneven contact area between vessel and hotplate surface Too large sample volume Whether the vessel is equipped with thermal insulation Size of the vessel and other factors would result in too slow temperature rise

3.How to achieve rapid temperature rise?
  Use a vessel made of stainless steel or aluminum alloy Use methyl silicone oil with small specific heat value Cover the vessel in the heating process Equip the heating vessel such as beaker with thermal insulation layer or other protective measures

4.How to achieve steady temperature rise?
  Must add and mix in the heating process, preferably at 600-800RPM Use water with high specific heat value or low-viscosity methyl silicone oil containing stabilizer.

5.How to avoid jittering of stirring bars of magnetic stirrers in vessel?
  Answer: The jittering results from failure of stirring bars First check the vessel bottom for flatness If the vessel bottom is OK, check the stirring bar for compatibility. For round-bottom flasks, users are advised to use olive-shaped stirring bar. Smaller stirring bars are suggested for small vessels. If the reasonably chosen stirring bar still does not work, try to replace the stirring bar in order to confirm whether it is due to the degaussing of the stirring bar Moreover, excessively high rotation speed would occasionally cause the stirring bar to fail.

6.How to avoid excessive product temperature overshoot of magnetic stirrers?
  Answer: The temperature overshoot of magnetic stirrers is a problem with all brands. It is possible to reduce the effect of temperature overshoot by increasing the vessel size and sample volume. Mixing in the heating process can also effectively reduce the overshoot. Moreover, presetting the temperature and placing the experimental sample into the vessel after the end of temperature overshoot can also effectively prevent the sample from being affected by overshoot.

7.How to use the temperature sensor properly?  
  Answer: Immerse the magnetic temperature sensor probe 20mm below the liquid surface but no less than 10mm away from the vessel bottom. Ensure that the temperature probe do not touch the vessel walls and avoid erroneous measurement.

8.Why the temperature is not stable and fluctuates remarkably when the heating temperature of the hotplate magnetic stirrer is set below 30°C?
  Answer: If the heating temperature is set below 30°C, it is substantially affected by changes in room temperature due to proximity to room temperature. Placing the machine in a space with small fluctuations of ambient temperature for test will effectively address the aforesaid problem.

9.Why is it that the screen cannot be turned OFF and stirring still continues after the magnetic stirrer is shut down?
  Answer: This is the residual heat warning capability of WESTTUNE magnetic stirrer, which is intended to protect the personal safety of users. When the machine is shut down with the hotplate temperature above 50°C, as long as the power supply is not disconnected, the screen would flash a "Hot Warning" indication constantly and the mixing function remains in order.

Our Company:
Delivery time: usually 3-15 days
Warranty: 12months
Payment methods: T/T, Western Union, Paypal, Credit Card, L/C
 
Our main lab instruments: mixer, shaker, water quality tester, autoclave, incubator, oven, water treatment(PH/DO/COND/Turbidity meter, pure water system), spectrophotometer, refractometer, peristaltic pump, heating mantle, hot plate, PCR machine, homogenizer, water bath and so on.