Mechanical Liquid Expansion Thermostat The Mechanical Liquid Expansion Thermostat is designed to regulate temperature in heating and temperature-sensitive equipment. It uses a capillary sensing system to detect temperature changes and a mechanical switching mechanism to control the connected...
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The Mechanical Liquid Expansion Thermostat is designed to regulate temperature in heating and temperature-sensitive equipment. It uses a capillary sensing system to detect temperature changes and a mechanical switching mechanism to control the connected electrical circuit.
When the sensed temperature reaches the preset point, the switch changes its contact state to control the operation of the heating system. As the temperature changes, the switching mechanism responds accordingly, helping maintain the required operating temperature.
Unlike electronic temperature controllers, this mechanical design does not rely on a digital control system. It provides a practical temperature control solution for appliances and industrial equipment that require straightforward and reliable temperature regulation.
JAYE supplies mechanical capillary temperature control switches for different equipment requirements. Temperature settings, capillary length, sensing bulb dimensions, electrical ratings, and terminal configurations can be customized according to the application.
| Designed Temperature Range | -35°C to 320°C; other temperature ranges are available upon request. |
| Electrical Rating | 16(3)A / 30A – 250V~; 10(1.8)A – 400V~ |
| Capillary Length | 300 mm to 3000 mm |
| Capillary and Sensing Bulb Materials | Stainless Steel or Copper |
| Sensing Bulb Diameter | 3 mm, 4 mm, 5 mm, 6 mm |
| Terminal Material | Brass |
| Contact Configuration | Single Pole Single Throw (SPST) / Single Pole Double Throw (SPDT) |
| Mounting Holes | 2 × M4 |
| Mounting Hole Center Distance | 28 mm |
| Minimum Capillary Bend Radius | 5 mm |
| Operating Life | ≥ 100,000 cycles |
| Insulation Resistance | ≥ 100 MΩ |
| Electric Strength | AC 2000 V / 1 min |
| Contact Resistance | ≤ 50 mΩ |
| Temperature Response Rate | ≤ 1.0°C/min |
Mechanical Temperature Control
The switch uses a mechanical operating mechanism to respond to temperature changes. It is suitable for equipment that needs direct temperature-based switching without a complicated electronic control system.
Capillary Temperature Sensing
The capillary sensing assembly detects temperature at the designated measurement point. This allows the sensing bulb to be positioned separately from the main switch body, depending on the equipment structure.
Adjustable Temperature Settings
Temperature settings can be selected according to the intended application and product design. This helps equipment manufacturers match the control point to their operating requirements.
Customizable Installation Design
Capillary length, sensing bulb dimensions, mounting arrangements, and terminal configurations can be specified to suit different equipment layouts.
Suitable for Different Heating Systems
The mechanical capillary switch can be used in various appliances and industrial heating systems where temperature monitoring and automatic circuit switching are required.
Mechanical Liquid Expansion Thermostats are used in equipment that requires temperature-based electrical control.
Common applications include:
The appropriate switch should be selected based on the equipment's temperature range, electrical load, sensing position, and installation conditions.
Different applications require different temperature control specifications. JAYE can work with equipment manufacturers to provide Mechanical Liquid Expansion Thermostats based on their technical requirements.
When requesting a quotation, please provide the following information if available:
Our team can review your requirements and help identify a suitable temperature control solution for your equipment.
1. How does a mechanical capillary temperature control switch work?
It uses a temperature-sensitive capillary assembly to detect temperature changes. When the temperature reaches the designed switching point, the mechanical mechanism changes the electrical contact state to control the connected circuit.
2. What is the function of the capillary tube?
The capillary tube connects the sensing bulb to the control mechanism. It allows the sensing bulb to be positioned at the required measurement location while the switch body is installed elsewhere.
3. Can the temperature setting be customized?
Yes. The switching temperature can be specified according to the product design and application requirements. Please confirm the required temperature range with JAYE before ordering.
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