Manometer
Manometers are instruments for measuring and displaying the pressure of liquids and gases. They primarily measure relative pressure compared to atmospheric pressure.
Product
Manometer
Manometers are instruments for measuring and displaying the pressure of liquids and gases. They primarily measure relative pressure compared to atmospheric pressure.
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Milian SA
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Guide and selection support
Manometers are primarily used for precise measurement of pressure values in liquid and gaseous media within laboratory and technical applications. They allow the monitoring and control of pressure conditions during various process steps.
When selecting a manometer, criteria such as measurement range, type of medium, accuracy, and housing design are crucial. Depending on the application, different designs and measurement principles need to be considered to ensure a suitable technical solution.
LabFinder helps you quickly navigate and efficiently search for the right manometers for your requirements. The structured presentation simplifies the procurement of suitable pressure measuring devices for laboratory and industrial applications.
Applications and Benefits
Manometers are measuring instruments for detecting and displaying the pressure of liquids and gases. In laboratory and scientific-technical settings, they are used to control and monitor pressure conditions in experimental setups, systems, and process pipelines. They primarily measure relative pressure, meaning the pressure compared to atmospheric pressure. This makes it possible to reliably determine and document gas or liquid pressures, for example.
Selection Criteria
Various factors play a role when selecting a manometer: First, the measurement range is essential, as the device must be designed for the expected pressures. The type of medium to be measured (liquid or gas) also needs to be considered, as this affects the material and design of the manometer. Other selection criteria include measurement accuracy, connection standard, and display types, such as analog pointer manometers or digital displays. Environmental conditions like temperature and medium corrosiveness should also be taken into account.
Types and Measurement Principles
Manometers are available in various designs, such as Bourdon tube manometers, diaphragm manometers, or capsule spring manometers. In these, pressure is usually transferred mechanically via a spring, diaphragm, or capsule and indicated on a scale. The measurement principles are based on the deformation of elastic elements under pressure. There are devices for relative pressure as well as those for vacuum (vacuum gauges) or absolute pressure measurement (barometers), with the latter often considered separate instruments. The choice depends on the measuring task and the desired type of pressure.
Calibration and Maintenance
To ensure reliable measurement results, manometers should be regularly calibrated. Calibration is carried out manually or automatically under defined reference pressure situations and comparison settings. Maintenance tasks include inspecting for mechanical damage, tightness, and functionality of the display mechanism. Depending on use and medium, regular inspections are necessary to avoid deviations and measurement errors.
Limitations of Use
Manometers are designed for direct pressure indication and cannot provide continuous electronic data transmission unless they are equipped with an electronic interface. Measurement accuracy is limited by the measurement range and design. Very rapid pressure changes and pulsating pressures require special versions. With aggressive or highly viscous media, the choice of material is important to avoid damage. Manometers are not suitable for flow or gas concentration measurements.
Search Terms and Related Terms
Synonyms and related search terms include pressure gauge, pressure indicator, pressure meter, relative pressure gauge, manometer, medium pressure meter, gas pressure gauge, liquid pressure gauge, and pointer manometer. Understanding these terms facilitates targeted searches and selection of suitable measuring instruments for laboratory and industrial use.
Also known as
Display manometer
Gas pressure gauge
Liquid pressure gauge
Manometer device
Medium pressure gauge
Pressure gauge
Pressure indicator
Pressure meter
Pressure sensor (used with analog devices)
Relative pressure gauge
Related categories
Suitable brands
Frequently asked questions
How does a manometer work for pressure measurement?
Manometers measure the pressure of a medium mainly through the mechanical deformation of a component such as a Bourdon tube or diaphragm, which makes the pressure value visible using a display mechanism.
What types of manometers are available for laboratory use?
There are different types such as Bourdon tube manometers, diaphragm manometers, or capsule spring manometers, which are selected based on measurement range and type of medium.
What criteria are important when selecting a manometer?
Key criteria are the measurement range, type of medium, accuracy, measurement principle, as well as environmental conditions and connection type.
How are manometers calibrated and maintained?
Manometers should be regularly calibrated against reference pressure sources. Maintenance includes checking for mechanical integrity, tightness, and the proper function of the display.
What are the limitations in the application of manometers?
Manometers are limited to pressure indication and are not suitable for electronic data logging or for measuring other parameters such as flow or concentration. Their measurement accuracy is limited by the design and range.
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