Liquid level gauges are used to show the level of liquid in a container. They are most often used to view the level of liquid in tanks and boilers in an industrial setting.
If you have a large container and the opening has a large cross section and the container is kept still, the liquid inside will become flat. It will be level. The liquid will remain level. If some liquid is added or removed the surface will soon become level again. That would not happen with a solid.
Normally the liquid used is either a spirit or another form of alcohol, which is where they get their alternate name, the spirit level.
When a liquid is held in a vessel, the water adheres to the side of the vessel. So when the amount of liquid held by the vessel is less than the full amount the vessel will hold, the liquid level rises where it touches the vessel. It "sticks" to the side of the vessel hard enough to be above the top of the liquid. This is called a negative meniscus. When the level of the liquid is higher than the top of the vessel (but doesn't overflow the top due to the surface tension of the liquid), then there is a positive meniscus.
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It is an circuit and find water level of material in a container falls below or above a set point with help of alarm. http://wiki.answers.com/What_is_a_level_alarm
A level alarm is an alarm that sounds when the level of material in a container falls below or above a set point.
Liquid level gauges are used to show the level of liquid in a container. They are most often used to view the level of liquid in tanks and boilers in an industrial setting.
If the liquid is static or moving with a constant velocity, then liquid pressure at a particular level is constant.In case the liquid is in accelerated motion we will get variation in the liquid pressure at a particular level
This time is needed for just starting the spare feed pump...
Logic box liquid level 38
A liquid will generally find it's own level.
pH is an absolute measure which is used to get the details about both acid and base level of any liquid products. It is an absolute measure because the scale never changes.
If you have a large container and the opening has a large cross section and the container is kept still, the liquid inside will become flat. It will be level. The liquid will remain level. If some liquid is added or removed the surface will soon become level again. That would not happen with a solid.
pH is an absolute measure which is used to get the details about both acid and base level of any liquid products. It is an absolute measure because the scale never changes.
The level of the liquid goes up because the object and the liquid can't take up the same space so the liquid flows up around it so they can both have space.
The most common cause is that the rechargeable battery in the alarm siren is failing, giving a low voltage to the alarm system. When the voltage from he battery drops below a certain level the alarm system thinks someone is trying to disable the alarm by disconnecting the battery. As it thinks someone is trying to disable the alarm, it sets the alarm off.