Science Equip CH1920-001 Magnetic Stirrer Hot Plate Thermostat Instructions

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Instruction Sheet  

Hotplates  

Simmerstat  

Thermostat  

CH1920-001 (Plain Plate)  

CH1921-001 (PTFE Coated)  

CH1922-001 (Plain Plate)  

CH1923-001 (PTFE Coated)  

Specifications:  

• Plate size: 200x180mm. Material: High  

temperature aluminium alloy.  

• “Simmerstat” model: Maximum plate surface  

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temperature 420 C. with small load and with  

heat control on 'HI'. Heat infinitely adjustable  

from ‘LO’ to ‘HI’ on scale.  

• Front Panel Controls: Mains ON/OFF  

Switch. (illuminated). Control knob for heat.  

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• “Thermostat” model: 320 C as the maximum  

position on thermostat control knob.  

• Cooling: Ventilated Housing and heat baffles  

mounted to the underside of hot plate.  

Convection cooling inside housing.  

• PTFE coated plates are available for each  

model. The general appearance is the same  

except the top plate colour is a dark char  

grey  

• Power: 220/240V.AC. 50/60 Hz. 3 Amp  

approx. Element 650 watt.  

CH1920-001  

CH1922-001  

Length: 200mm  

Length: 200mm  

Width: 180mm  

Width: 180mm  

Height: 125mm  

Height: 125mm  

Weight: 2.4kg  

Weight: 2.4kg  

Note:  

Because the Thermostat model is limited for maximum temperature, it is not suitable for boiling  

large volumes of water.  

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General	Details
Name	Science Equip CH1920-001 Magnetic Stirrer Hot Plate Thermostat Instructions
Make	Science Equip
Language	English
Filetype	PDF (Download)
File size	0.06 MB

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Science Equip CH1920-001 Magnetic Stirrer Hot Plate Thermostat Instructions Overview

Summary of Contents

• Page 1: Instruction sheet for hotplates includes models CH1920-001, CH1921-001, CH1922-001, and CH1923-001. Specifications detail a plate size of 200x180mm made from high temperature aluminium alloy. The Simmerstat model has a maximum plate surface temperature of 420°C with heat control adjustable from 'LO' to 'HI'. Front panel controls include a mains ON/OFF switch and a control knob for heat. The Thermostat model has a maximum temperature of 320°C on the thermostat control knob. Cooling features include ventilated housing and heat baffles mounted to the underside of the hot plate. PTFE coated plates are available for each model, with a dark char grey top plate color. Power specifications indicate 220/240V.AC, 50/60 Hz, and approximately 3 Amp with a 650 watt element. The dimensions for both CH1920-001 and CH1922-001 are 200mm in length, 180mm in width, and 125mm in height, with a weight of 2.4kg. The Thermostat model is not suitable for boiling large volumes of water due to its maximum temperature limitation.
• Page 2: Instruction sheet for hotplate/stirrers includes the following models: CH2090-001 (Plain Plate), CH2091-001 (PTFE Coated), CH2092-001 (Plain Plate), CH2093-001 (PTFE Coated). Specifications include a plate size of 200x180mm made from high-temperature aluminium alloy. The Simmerstat model has a maximum plate surface temperature of 420°C with small load and heat control on 'HI', with heat infinitely adjustable from ‘LO’ to ‘HI’. The Thermostat model has a maximum position of 320°C on the thermostat control knob. Front panel controls consist of a mains ON/OFF switch and a control knob for heat and stirrer speed. Stirring speed is variable from approximately 150 to 1200 RPM. PTFE coated plates are available for each model, with the same general appearance except for the top plate color being dark char grey. Cooling features include ventilated housing and heat baffles mounted to the underside of the hot plate, with convection cooling inside the housing. Power specifications are 220/240V.AC, 50/60 Hz, 3 Amp approximately, with an element of 650 watts. The Thermostat model is not suitable for boiling large volumes of water due to its maximum temperature limitation.
• Page 3: Instruction sheet for hotplate stirrer includes key features and usage instructions. The device incorporates a speed-controlled motor that drives a rotating magnet under the hot plate for stirring fluids. It is designed to heat and stir a fluid simultaneously. The motor is a brushless AC type with ball bearings for maintenance-free operation. Speed control is electronic, allowing for slow speeds for titration and high speeds for strong mixing. Heat control methods include a thermostat that limits maximum plate temperature to 320°C and a Simmerstat model that can reach about 420°C. Heating with Simmerstat is controlled by cycling the heating element relative to time. The thermostat cycles ON/OFF to maintain a preset plate surface temperature. Ensure no residual packaging materials are between the heat baffles before use. Caution is advised to avoid touching the hot surface and to never drop the unit. Clean any spillage with a wet sponge when the plate is cool and never store the equipment unless the plate is cool.
• Page 4: Why am I having trouble boiling water on a hot plate? IEC hot plates have either ‘Simmerstat’ or ‘Thermostat’ temperature control. A ‘Thermostat’ control cycles the heating element to hold a specific temperature up to 320°C. This type of plate control is excellent for lower temperature work or for melting solids at specific temperatures. A ‘Simmerstat’ control adjusts the heat from zero to maximum on a scale of 0 to 10. When set to ‘10’, the heater is on 100% of the time and it reaches its maximum temperature of around 420°C. For bringing water to the boil in a vessel, the plate needs to achieve the highest temperature. Several factors affect heating when a beaker of liquid is heated on a hot plate. The ‘Simmerstat’ control permits the maximum power of the hot plate to be used and provides a higher plate temperature. It is the better choice for general laboratory applications and particularly for bringing fluids to a simmer or a boil.