UFZ float level gauge
  • UFZ float level gauge

UFZ float level gauge

UFZ float level gauges are available in both simple and windproof types. By utilizing the principle of buoyancy and force balance, a large float that matches the specific gravity of the measured medium is placed in the container to float on the liquid level of the medium.

Product Overview:

UFZ float level gauges are available in both simple and windproof types. By utilizing the principle of buoyancy and force balance, a large float that matches the specific gravity of the measured medium is placed in the container to float on the liquid level of the medium. As the measured liquid level changes, the float rises and falls. The float is connected to another small float using a steel cable. The small float can be placed next to the scale, or a magnetic steel can be added to the measuring cylinder to drive the scale flip ball to indicate the height of the liquid level in the container.

Float level gauges are widely used for low-cost liquid level measurement in tanks, tanks, oil fields, oil depots, and other flat bottomed conical caps and dome top containers containing corrosive media in petrochemical systems, as well as water towers (water tanks) in general enterprises and civil buildings, to solve the difficulty of manual liquid level measurement.

Working principle:

The steel strip float level gauge consists of five parts: a float, connecting steel wire, guide pulley, heavy hammer pointer, and display ruler.

1. Buoy: A buoy is made by welding two stainless steel (or carbon steel) hollow cones and one stainless steel (or carbon steel) hollow cylinder, with guide rings welded on both sides of the buoy for guidance. The buoy's function is to directly transfer the buoyancy of the liquid level change to the steel wire, causing the steel wire to transfer the liquid level change to the hammer pointer, achieving on-site indication of the liquid level change.

2. Connecting steel wire: One end of the connecting steel wire is suspended with a buoy, and the other end is connected to a heavy hammer pointer. The middle part is enclosed inside the steel pipe.

3. Guided pulley: designed according to the geometric shape of the on-site liquid level tank and the installation requirements of the instrument, and connected to the steel wire guided pulley to verify the composition of the pulley shell. Its main function is to connect the steel wire guide and reduce the resistance of the system rotation.

4. Heavy hammer pointer: The middle is in the form of a pointer, and the corresponding scale value pointed by the pointer is the measured liquid level height, which moves synchronously with the change of the buoy and the connection of the steel strip.

5. Display ruler: The standard value is engraved on the surface, measured in centimeters, with a height of 1 meter per section.

The buoy level gauge is designed based on the principle of force balance. When the liquid level in the tank is at a certain position, the weight of the buoy W, the weight of the hammer pointer W1, and the buoyancy force F that the buoy is subjected to when immersed in the liquid. The frictional force f in the entire system is in a balanced state (i.e. W-F - W1-f=0).

When the liquid level rises, due to the steel wire (3), the floating buoy (2) is lifted along the guiding steel wire (4), causing the liquid buoyancy, F, to increase, causing the four forces of the original balance system to lose balance. Under the action of gravity, the heavy hammer pointer (8) slides down and continuously indicates the height of the liquid level rise on the scale.

When the liquid level drops, the buoyancy F of the buoy decreases, causing the steel wire and liquid to descend synchronously. Due to the weight of the buoy being greater than the weight of the hammer pointer, the pointer moves upwards. Similarly, when the liquid level continuously decreases and changes, the hammer pointer can continuously indicate the drop of the liquid level, thus achieving the goal of accurately measuring the change in liquid level.

Technical parameters:

1. Work pressure: atmospheric pressure.

2. Medium density ≥ 0.6g/cm3.

3. Measurement range: Any specified measurement range within L=20m. For ranges greater than 20m, it is specified by the user according to special specifications.

4. On site indication accuracy: ± 10mm.

5. Temperature of the tested medium: -30 ℃/300 ℃

6. Verticality of guide wire installation: ≤ ± 5 °.