What is capillary thermostat?
Capillary thermostats are used to control heating elements. Based on the set temperature, the sensor closes as the temperature rises and opens as the temperature falls.
How does a capillary tube thermostat work?
Bulb and capillary thermostats have a fluid filled bulb and respond quickly to change in temperature. When temperature rises the bulb fluid expands via the capillary tube to an expandable diaphragm or bellows to open or close the contacts.
What liquid is in a capillary thermostat?
A large number of capillary tubes use a variation of an alcohol fill. Some even have odors added so a leak can be detected. No matter which style or model you choose, all of the capillary thermostat switches operate using the same physics.
What is inside of capillary thermostat?
In capillary thermostats, the temperature sensor consists of a capillary tube, a diaphragm and an expansion fluid. When the sensor is heated, the liquid fluid heats up and expands. The expansion of the fluid increases the pressure in the closed circuit system.
What is a capillary bulb?
The bulb is typically a larger diameter tube mounted in the material flow being sampled. The capillary is a small tube that carries the fluid away from the bulb to the head. The head can be a diaphragm or bellow, which moves with the changing temperatures.
What is inside capillary tube of thermostat?
Switch contacts are connected by linkage to a flexible metal bellows which has a small tube called a capillary tubeconnected to it. The length of the tube is determined by the application for which it is to be used. This tube is usually filled with a substance such as freon gas of the type used in refrigerators.
What is the difference between expansion valve and capillary tube?
Although these two systems both control the flow of refrigerant, they work in different ways. A thermal expansion valve can respond to the environment by increasing or decreasing the flow of refrigerant as necessary, while a capillary tube is a fixed system that does not fluctuate with heat load changes.
What is a bulb and capillary thermostat?
Bulb and capillary thermostats provide design engineers flexibility to place the sensor in remote locations. The remote bulb and capillary are available in copper or stainless steel in lengths up to 13 feet. These temperature sensors are used in a variety of applications as temperature and regulating devices or high limit safety sensors.
How does a bulb thermostat work?
Bulb and capillary thermostats have a fluid filled bulb and respond quickly to change in temperature. When temperature rises the bulb fluid expands via the capillary tube to an expandable diaphragm or bellows to open or close the contacts.
What are remote bulbs and capillaries used for?
The remote bulb and capillary are available in copper or stainless steel in lengths up to 13 feet. These temperature sensors are used in a variety of applications as temperature and regulating devices or high limit safety sensors.