Tape Level Gauge in the Oil Industry

Tape level gauges play a significant role in the petroleum industry by accurately measuring and monitoring liquid levels. This article delves into the application of steel tape level gauges in the petroleum industry, covering their working principles, selection guidelines, installation requirements, as well as advantages and disadvantages.

Tape Level Gauge in the Oil Industry

Working Principles

The working principle of a steel tape level gauge relies on the buoyancy principle and tension sensor technology.

Float. The float is immersed in the liquid being measured, and its buoyancy changes with the variation of the liquid level.

Steel tape. The steel tape is connected above the float and extends along the direction of the liquid level change.

Pulley. The pulley is fixed at the top of the liquid level instrument and is used to guide the movement of the steel tape.

Tension sensor. The tension sensor is installed at the end of the steel tape to measure the tension on the steel tape, thereby determining the height of the liquid level.

When the liquid level rises, the float rises accordingly, and the tension sensor detects an increase in tension on the steel tape; conversely, when the liquid level drops, the float descends, and the tension sensor detects a decrease in tension on the steel tape. By measuring the change in tension on the steel tape, the height of the liquid level can be determined.

Selection Guidelines

When selecting a steel tape level gauge, the following factors need to be considered:

Nature of the liquid. Different liquids have different densities and viscosities, so it is necessary to choose a steel tape level gauge suitable for the properties of the liquid.

Operating environment. Consider the operating environment conditions of the level gauge, including temperature, pressure, corrosiveness, etc., and select models that are resistant to high temperatures, high pressures, or corrosion.

Measurement range. Select a suitable measurement range according to the variation range of the liquid level to ensure that the level gauge can meet the actual application requirements.

Accuracy requirements. Choose a suitable model based on the accuracy requirements of the application scenario; generally, higher accuracy level gauges are relatively more expensive.

Installation Requirements

Correct installation is the key to ensure the normal operation and accurate measurement of the level meter. The following are the points to be noted when installing the liquid level gauge with steel strip:

  1. Fixed and stable. When installing the level meter, make sure the level meter is fixed firmly and free from external vibration and shock.
  2. Avoid interference. Avoid installing the level meter in the area of liquid agitator or liquid flow to prevent external interference from affecting the measurement accuracy.
  3. Keep clean. Clean the float and steel band of the level meter regularly to prevent dirt from blocking or accumulating and affecting the measurement accuracy.
  4. Calibration. After the installation is completed, carry out calibration and calibration to ensure that the measurement results of the liquid level meter are accurate and reliable.

Tape float level gauge

Advantages and disadvantages analysis


  1. Simple and reliable. Steel belt level meter has a simple structure, stable and reliable work, applicable to a variety of liquid media.
  2. Wide range of application. Steel belt level gauge for high temperature, high pressure, corrosive liquids and other special environments, has a strong adaptability.
  3. Low cost. Compared with other liquid level meters, the manufacturing cost of steel belt level meter is low, the price is relatively affordable.


  1. Measurement accuracy is limited. The measurement accuracy of the steel belt level gauge is relatively low, generally within ± 1%, is not applicable to the level of precision requirements of the scene is high.
  2. Susceptible to external interference. If the level meter is installed in the liquid agitator or liquid flow in a large area, it is easy to be affected by external interference with the measurement results.

Application in the Petroleum Industry

  1. Safety Assurance. Steel tape level gauges play a crucial role in ensuring safe operations by monitoring tank levels to prevent spills, leaks, and potential hazards.
  2. Resource Management. Effective monitoring of liquid levels aids in resource management, optimizing storage and utilization of petroleum products.
  3. Environmental Protection. Timely detection of level changes helps prevent environmental pollution by minimizing the risk of leaks and spills.
  4. Production Efficiency. Real-time level monitoring contributes to stable and continuous production processes, enhancing efficiency.
  5. Regulatory Compliance. Compliance with regulatory requirements regarding level monitoring is facilitated by the use of steel tape level gauges.


In conclusion, steel tape level gauges are indispensable in the petroleum industry, offering reliable level measurement and monitoring capabilities. Proper selection, installation, and maintenance are essential to maximize their benefits while mitigating limitations. Their widespread application contributes to safe, efficient, and environmentally responsible operations in the petroleum sector.

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