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Size: 1206
Comment:
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Size: 1993
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 18: | Line 18: |
| ||...|| In Lecture Halls|| || ||...|| Stock Cabinet || || ||...|| Stock Cabinet || || |
||Light bulb or Alarm bell|| || || ||DC Power supply|| || || ||3 cords with clips|| || || ||Burner|| || || |
| Line 24: | Line 25: |
| 1. Make a Setup check list. 1. ... |
1. Install the burner gas tube with the gas source. 1. Make sure that you have the gas switch off and in the right pressure that you want before you turn it on. 1. Connect one pole of the light bulb or alarm bell to plus hole of the DC power supply, another pole of the light bulb or alarm bell is connected to the bottom left connection on the bimetallic strip switch. The minus hole of the DC power supply is connected with the top left connection on the bimetallic strip switch. |
| Line 28: | Line 30: |
| 1. List any Warnings.... 1. Demonstration may require practice. |
1. Beware of the heated strip |
| Line 34: | Line 34: |
| Insert description of demonstration, how is the demonstration preformed. | The bimetallic strip consists of brass and stainless steel. Since brass has higher thermal expansion coefficient than stainless steel. When it is heated by the burner, it bends to the stainless steel side(left side). That makes the close circuit to turn on the light bulb or alarm bell. After you stop heating the strip for awhile, the electronic circuit will open again due to the strip bend to its normal vertical state. |
Bimetallic Strip Switch, 4A30.11
Location:
Cabinet: Thermodynamics Cabinet
Bay: (A3)
Shelf: #3
(attachment photo showing the fully set up demonstration)
Description:
Insert description of apparatus, its component, what it is demonstrating.
Equipment |
Location |
ID Number |
|
|
|
Bimetallic Strip Switch |
[:ThermoCabinetBayA3: TD, A3, Shelf #3] |
4A30.11 |
Light bulb or Alarm bell |
|
|
DC Power supply |
|
|
3 cords with clips |
|
|
Burner |
|
|
Setup:
- Install the burner gas tube with the gas source.
- Make sure that you have the gas switch off and in the right pressure that you want before you turn it on.
- Connect one pole of the light bulb or alarm bell to plus hole of the DC power supply, another pole of the light bulb or alarm bell is connected to the bottom left connection on the bimetallic strip switch. The minus hole of the DC power supply is connected with the top left connection on the bimetallic strip switch.
Cautions, Warnings, or Safety Concerns:
- Beware of the heated strip
Demonstration:
The bimetallic strip consists of brass and stainless steel. Since brass has higher thermal expansion coefficient than stainless steel. When it is heated by the burner, it bends to the stainless steel side(left side). That makes the close circuit to turn on the light bulb or alarm bell. After you stop heating the strip for awhile, the electronic circuit will open again due to the strip bend to its normal vertical state.
attachment other photos |
attachment other photos |
attachment other photos |
attachment other photos |
References:
- List any references
[:ThermalProperties:Thermal Properties of Matter]
[:Demonstrations:Demonstrations]
[:Instructional:Home]