Water level Definition and 77 Threads

how to measure water level in a tank?? How to measure water level in tank in the cheapest way? The first thing that came to my mind is pressure sensor... but it's ruled out because it's expensive. Can somebody suggest a cheaper mechanism? And it is preferred to have a low power mechanism...

Measuring water level in tank...?? How to measure water level in tank in the cheapest way? The first thing that came to my mind is pressure sensor... but it's ruled out because it's expensive. Can somebody suggest a cheaper mechanism? And it is preferred to have a low power mechanism...

Homework Statement another conceptual problem I'm having here, goes like this; A piece of ice floats in a glass filled with water. The ice contains a small stone, so that when the ice has melted the stone will sink to the bottom of the glass. What will happen to the water level of the glass...

I'm curious: "A group of students needs to determine the time constant of a water tank. FIrst, the student establish an equilibrium level, with a known flow rate into the tank and both valves (solenoid and hand-operated) fully opened. One of the students reduces the input flow and the group...

Homework Statement If ice floats in water, how many percent of it show above the water level? density of water=1000kg/m^3 density of ice=920kg/m^3Homework Equations I really don't know how to start and what I have to do with those densities...just give me a hint. solution would be 8%

I want to measure level of water at two positions in tank. How to measure it? |-----|_> here & | ----|_ >here |____| Fig. Tank when water level reach to certain levels(1,2) o/p voltage should be generated. I hav to connect it to 24 V DC PLC i/p. I need simple and easy solution. PLZ help me.

request for water level sensors circuit! anyone got the water level sensors circuit? can share with me? really appreciate !

[SOLVED] Change in Water Level after throwing over anchor Homework Statement An anchor is on a barge with bottom surface area: 8.5 m^2 The Anchor weighs 30kg and density 7860 kg/m^3 I know the water level will fall, but how do you calculate how much it falls? Homework Equations...

Homework Statement Answer both of the questions below using the following information: A lead weight is fastened on top of a large piece of Styrofoam that floats in a container of water. Because of the weight of the lead, the water line is flush with the top surface of the Styrofoam. If the...

I've used a 5-gallon bucket, filled with water, with two clear plastic hoses plumbed to the bottom to establish level over a distance of about 5 meters. It worked well enough for the circumstances. Now I'm interested in establishing level over a distance that is closer to 30 meters, and would...

Hello, Can you help me understand physical meaning of measuring water level by measuring differential pressure. In open water tank it's fairly easy. One side of the transmitter is open and exposed to athmospheric pressure. In such case, differential pressure is directly proportional to water...

Homework Statement A water trough is 10m long and a cross-section has a shape of an isosceles trapezoid that is 30cm wide at the bottom, 80cm wide at the top, and has a height of 50cm. If the bottom of the trough is being filled with water at the rate of .2m^3/min, how fast is the water level...

Homework Statement Water is filled to a height H behind a dam of width w. Determine the resultant force exerted by the water on the dam. Homework Equations P=pgh = pg(H-y) (where p is density, greek rho) dF = PdA = pg(H-y)wdy (where dA is a narrow horizontal strip of the dam with...

Homework Statement A triangular prism has end peices in the shape of inverted isosceles traingles with bases 60cm and heights 40 cm . It is 4m long and water is being pumped into it at a rate of 9 L/s. How fast is the level of water rising when the water is 10cm deep. Homework Equations...

i am having trouble with a problem about a capacitor based sensor.. i am to propose two separate capacitance based sensors, one for soil moisture and another for water level.. my problem is finding the time constant inorder to find C so i can use the equation C = k(e0)A/d to solve for k... as...

Whar happens to the level of water when ice melts in a beaker

If you have ice cubes in a glass of water and they melt the level of the water goes down. Why are glaciers in the ocean different?

For Those Good In Physics!water Level Problem. Here's the question. U are on a boat with a piece of lead on the boat.The water level rose due to more volume of water displaced.So, when we throw the piece of lead into the water,will the water level rise or fall or remain the same in its...

A water trough is 6 m long and has a cross-section in the shape of an isosceles trapezoid (dimension shown in the diagram.) Water is being pumped into the trough at a rate of 0.5 m^3/min. How fast is the water level rising when it is 0.5 m deep. AFAIK the volume of a trapazoid like this should...

A tank is filled with water to a height H, 26 m. A hole is punched in one of the walls at a depth h = 6.50 m below the water surface (see the figure). What is the distance x from the base of the tank to the point at which the resulting stream strikes the floor? i knoe the equation to find out...

1. When the ice cube melts, will the water level rise, stay the same or fall? and why? 2. What happens to the height of pond when ancor thrown overboard rise, stay same or fall? Why? I know that for the first question it's stay the same and for the 2nd question, it's fall; but i don't know...

Please refer to page 6 of http://www.physics.usyd.edu.au/ugrad/jphys/jphys_webct/jp_exams/1902_exam_2004.pdf I'm quoting from the solution guide: http://www.physics.usyd.edu.au/ugrad/jphys/jphys_webct/jp_exams/1902_exam_solutions_2004.pdf P_1 = P_A + \rho g y_1 and P_2 = P_A +...

This was a question on my last exam for physical chemistry. There were no examples in the book as to how to do this question and I think it pertains to physics. I would like to know how to do this in the event that it appears on the final. "An iron pipe 2 m long and closed at one end is...

A closed container is partially filled with water. Initially, the air above the water is at atmospheric pressure 1.01x10^5 Pa and the gauge pressure at the bottom of the water is 2500 Pa. Then additional air is pumped in, increasing the pressure of the air above the water by 1500 Pa. What...

Hi, Theoertically, this circuit should work, because when water reaches the probe sensor (Level n), it will have a finite conductance and the input to the 7407 hex buffer will register as logic 1. This will lead to its output as logic 1 also, and since 7407 uses positive logic convenetion...

I am not an experienced engineer as I am still studying in the university. I wonder if I want to design a system which can monitor the water level of a tank, what transducer can I use? Infrared sensors? Let's say I use infrared sensors, and I use a 10-series LED IC chip to determine the water...

stuck in explaining this problem A glass of water contains a large ice cube the glass can hold no morw water the ice is floating in the water what will happen to the water level when the ice melts?