What are oil-filled gauges used for？

If you work in industries such as machinery manufacturing or oil and gas, you’ve likely seen oil-filled gauges. These gauges are commonly used to measure pressure in various systems, such as hydraulic systems and compressors. But why are they so popular? And what is the purpose of the oil filling? This article will share information about manómetros llenos de aceite, introducing their uses, advantages, and why they are indispensable in many industries.

 

What is an oil-filled gauge?

An oil-filled gauge is essentially a pressure gauge filled with a small amount of oil. The function of oil is probably obvious; in daily life, if our hands are oily, it’s easy to slip and drop things. Therefore, oil plays many roles in industry: it helps dampen vibrations, reduces wear on internal components, and ensures more accurate readings. Oil acts as a buffer, keeping the pressure gauge stable in environments with frequent pressure fluctuations or vibrations.

These pressure gauges are particularly useful in industries where machinery operates under high pressure or fluctuating conditions. For example, they are commonly found in systems with extremely high accuracy requirements and where machinery is subjected to continuous pressure, such as hydraulic systems, compressors, and steam boilers.

What are oil-filled gauges used for?

Oil-filled gauges are widely used in various industries with extremely high requirements for durability and accuracy. Here are some of the most common applications:

Hydraulic systems: In hydraulic applications, oil-filled gauges are crucial for monitoring fluid pressure. The oil inside the gauge helps protect internal components from vibrations caused by pressure fluctuations.

Automotive and machinery: In automotive applications, oil-filled gauges provide accurate pressure readings for systems such as braking systems or fuel systems. The internal oil helps minimize the effects of vibration, ensuring smooth operation of the gauge.

Industrial equipment: oil-filled gauges are also used to monitor pressure in industrial equipment such as compressors, boilers, and pumps. These environments often involve high vibrations and extreme temperatures, and the oil inside the gauge helps maintain its accuracy and lifespan.

 

What are the advantages of oil-filled gauges?

But why choose an expensive oil-filled gauge instead of a cheaper ordinary pressure gauge?

Improved measurement stability: Ordinary pressure gauges may experience pointer jitter in high-vibration environments, leading to unstable readings. oil-filled gauges, due to the damping effect of the oil, effectively reduce pointer oscillation caused by vibration or impact, thus ensuring the stability and accuracy of readings. They perform particularly well in environments with significant vibration, such as machinery, pumps, and compressors.

Increased Service Life: Oil filling effectively reduces friction and wear between internal parts, extending the instrument’s lifespan. As a lubricating medium, oil reduces direct contact between mechanical components, lowering the risk of corrosion and allowing the pressure gauge to maintain better performance over extended periods.

Preventing the Influence of Temperature Changes: Oil-filled gauges buffer the impact of temperature changes on readings. Air expands or contracts with temperature changes, leading to measurement errors. Oil has relatively low expansion and good stability at different temperatures, reducing errors caused by temperature differences and making measurements more accurate in high- or low-temperature environments.

Providing Enhanced Shock Resistance: Oil-filled gauges have stronger shock resistance and are suitable for operating conditions with significant or unstable vibrations (such as construction machinery, pump stations, and generators). The presence of oil effectively prevents unnecessary errors and damage when exposed to mechanical vibrations.

The above only lists a few advantages of oil-filled gauges. Compared to ordinary pressure gauges, oil-filled gauges also offer higher measurement accuracy, greater stability, and stronger resistance to shock, temperature differences, and corrosion. These advantages make oil-filled gauges particularly outstanding in environments with high vibration, large temperature differences, high humidity, or high precision requirements, making them the preferred choice for many industrial applications.

 

What are the application industries for oil-filled gauges?

Given their numerous advantages, oil-filled pressure gauges are commonly used in industries with extremely high pressure measurement requirements. These industries include:

Oil and Gas: Oil-filled gauges are widely used to measure pressure in harsh environments such as oil drilling platforms and natural gas pipelines.

HVAC Systems: Heating, ventilation, and air conditioning systems use oil-filled gauges to monitor pressure levels in compressors and refrigerants.

Manufacturing Plants: Pressure gauges are crucial in many production processes, and oil-filled gauges ensure stable and accurate readings even in harsh factory environments.

 

How to Choose the Right Oil-Filled Gauges

When selecting an oil-filled gauge, it is essential to consider the specific requirements of your system. Factors such as pressure range, material compatibility, and environmental conditions (e.g., temperature and humidity) all influence the choice of pressure gauge. Partnering with a reliable supplier capable of providing customized solutions helps ensure you obtain the oil-filled gauge best suited to your needs.

Oil-filled gauges are essential tools for precise pressure measurement in industries with extremely high requirements for accuracy and durability. They offer advantages such as vibration resistance, improved accuracy, and extended service life, making them indispensable in a wide range of applications, from hydraulic systems to industrial machinery.

 

If you are looking for high-quality oil-filled gauges and other instruments, Anhui Yige Instrument Co., Ltd. is a trustworthy global partner. As an international instrument manufacturer, we specialize in the design, production, and sales of various pressure gauges, valves, and related products. We are committed to providing high-quality products and professional services to both new and existing customers.