Technical Data

As measuring instruments, the design, manufacturing, and application of pressure gauges typically need to comply with international regulations and standards. These standards ensure the accuracy, reliability, safety, and applicability of pressure gauges.
Below are some commonly recognized international standards:

1. ASME B40.100 (USA): A standard issued by the American Society of Mechanical Engineers (ASME) for mechanical pressure gauges.
2. EN 837 (EU): A standard published by the European Committee for Standardization (CEN) for mechanical pressure gauges.
3. JIS B 7505 (Japan): A standard established by the Japanese Industrial Standards (JIS) for mechanical pressure gauges.

The accuracy of a pressure gauge is typically defined based on its standard range. Common accuracy classes include ±1%, ±1.6%, and ±2.5%.
Different accuracy levels are selected according to application requirements. High-accuracy pressure gauges are usually used in high-demand areas such as quality inspection and laboratories, while lower-accuracy gauges are suitable for general monitoring or production line inspections.

Basic considerations should include the working pressure and required accuracy.

1. For static (or slowly varying) pressure, the maximum measured pressure should be between 1/3 and 2/3 of the full-scale value of the gauge.
2. For dynamic (fluctuating) pressure, the maximum measured pressure should be no more than 1/2 of the full-scale value.

Following this recommended selection guideline can help avoid the following issues:

1. Sudden pressure spikes causing strong impact, resulting in pointer not returning to zero or leakage.
2. Structural damage due to operation under overpressure conditions.
3. Significantly shortened product lifespan due to prolonged high-load operation.

Based on the above principles, it is recommended to select a pressure gauge with a full-scale range approximately twice the maximum operating pressure.

"Pressure gauge" is a general term. In different contexts and application fields, depending on the specific performance focus, it may be referred to by other names.
These alternative names may emphasize the measurement, display, or monitoring function of the device.
Here are some commonly used alternative names:

1. Pressure Meter
2. Pressure Indicator
3. Pressure Sensor
4. Pressure Transmitter

When pressure is applied, the pressure medium enters the Bourdon tube, causing it to expand and bend. This deformation is then used to indicate the pressure level.

A digital pressure gauge uses pressure sensors (such as piezoresistive, piezoelectric, or strain gauge elements) to detect pressure changes. These changes are converted into electrical signals, which are then displayed as numerical values.

Pressure can be classified in various ways depending on the reference point, measurement method, and application field.
Here are the most common types of pressure:

1. Absolute Pressure
2. Gauge Pressure
3. Negative Pressure / Vacuum Pressure
4. Differential Pressure

Manual installation by hand may cause internal damage to the instrument components or lead to indication errors.