float level gauge

The float level gauge is a simple liquid level measuring instrument. It is suitable for flat-bottomed cone covers and vaulted containers in oil fields and oil depots that store corrosive media in petrochemical systems, as well as for water towers and water tanks in general corporate and civil buildings. Low-cost liquid level measurement to solve the difficulty of manual liquid level measurement. The liquid level gauge is designed based on the principle of force balance. When the liquid level is at a certain height, the weight of the float is , the weight of the weight needle is , the buoyancy force experienced by the float immersed in the liquid is , and the system friction is . In the equilibrium state, when the liquid level rises, the buoyancy force increases and the sum remains unchanged, the balance of the above formula is destroyed, and the vertical pointer slides down. A new equilibrium is not established until the force is reduced to its original value. If the force keeps increasing, that is, the liquid level keeps rising and the pointer keeps falling. On the contrary, when the liquid level drops, the weight pointer rises to indicate the height of the liquid level.
Technical parameters of float level gauge
Any choice within the measurement range
Indicator accuracy
Working pressure normal pressure or belt type sealed tube
Medium density
Guide wire Installation verticality
Material pressing part
Indicating scale aluminum alloy
Buoy level gauge product structure
The liquid level gauge is connected by a buoy, a steel wire guide pulley, a weight, a pointer, a display scale, etc. Composed of five parts.
Buoy The buoy is welded with two stainless steel or carbon steel hollow cones and a stainless steel or carbon steel hollow cylinder. Guide rings are welded on both sides of the buoy to guide the liquid. The buoyancy of the level change is transferred to the steel wire, so that the steel wire transfers the liquid level change to the weight pointer to realize on-site indication of the liquid level change.
Connecting steel wire One end of the connecting steel wire hangs the buoy, the other end is connected to the weight pointer, and the middle part is enclosed in the steel pipe.
The guide pulley is designed according to the geometry of the on-site liquid level tank and the installation requirements of the instrument. It is composed of two parts connected to the steel wire guide pulley and the approved pulley shell. Its main function is to connect the steel wire guide and reduce the resistance to system rotation.
The weight pointer is made of steel, with a pointer in the middle. The corresponding scale value pointed by the pointer is the measured liquid level. It moves synchronously with the change of the buoy and the connecting steel belt.
The display ruler is made of alloy aluminum and has standard values engraved on the surface in centimeters and the height of each section is meters.
Installation and debugging
Zero adjustment of the meter
When the meter is installed, there should be no measured medium in the tank. When the float is at the bottom of the tank, the red tip of the weight pointer should indicate Refers to the zero value at the top of the measuring range of the ruler, otherwise the wire length needs to be adjusted.
Meter range adjustment
After adjusting the zero position of the meter, pull the float to the top of the container or the maximum measuring point. The red tip of the weight pointer should point to the bottom of the scale. position, that is, it falls on the maximum range point of the scale.
Installation, use and precautions
Welding and installation of guide wire lower support
Determine the position at the bottom of the container according to the movement direction of the liquid level gauge buoy, and weld or rivet the fixed guide wire lower support
Installation of guide wire
Straighten the wire with force and fix it on the lower support. Be careful not to bend or knot the wire to avoid affecting the up and down movement of the buoy.
The guide wire passes through the guide ear hook of the buoy, and then goes through the hook screw to fix the end of the wire and clamp it with a wire chuck, and tighten the hook nut to keep it in a tight state, and then put the upper nut together Tighten to prevent loosening, then close the lid.
The two guide wires should be perpendicular to the ground and parallel to each other, ensuring that the distance between them is
Installation of the ruler
The length of the ruler is determined according to the measurement range provided by the user when ordering , it is required during installation that the connecting part of the ruler should be straight and smooth and should not have any unevenness, so as not to affect the normal operation of the weight pointer or cause measurement errors.
The scale should be perpendicular to the liquid level in the storage tank and should not be tilted. The verticality of the installation of the scale should not be greater than 100 degrees, to avoid causing the weight pointer to get stuck and causing measurement failure.
When welding the scale tripod, try to ensure that the mounting surface is on the same plane and the mounting holes are on the same straight line, that is, ensure that the scale surface of the scale and the guides on both sides of the weight pointer are straight and balanced. It is a straight line, allowing the weight pointer to move up and down flexibly on the scale.
Note that the distance between the two ruler tripods is meters.
Installation of the buoy connecting wire and weight pointer
One end of the buoy and the connecting wire is clamped and fixed with a wire clamp, and then the other end of the connecting wire is installed into the two pre-installed guide pulley boxes , and connected to the weight pointer, clamped and fixed with a wire chuck. Finally, adjust each guide pulley bracket to make the connecting wire perpendicular to the horizontal, so that the buoy can move flexibly on the guide wire, with a light and smooth feeling without getting stuck, twisted, or knotted. curling or damage.
Pay attention to the required length of steel wire.
Ordering Instructions
Indicate the specifications and model of the liquid level meter.
Measuring range
The measured medium and the density and temperature of the medium.
Dimensions of installation distance.