How to Download Asme B40100: A Complete Guide for Engineers

If you are an engineer working with pressure vessels and piping, you might have heard of Asme B40100. This is a standard that covers analog, dial-type gauges, which use elastic elements to sense and indicate pressure by means of a pointer moving over a graduated scale. It also includes attachments such as diaphragm seals, snubbers, and pressure limiting valves that are installed between the pressure source and gauge.

Asme B40100 is an American National Standard that was developed by the American Society of Mechanical Engineers (ASME). It was first issued in 2013 and revised in 2022. It provides requirements for the design, construction, installation, calibration, testing, and maintenance of pressure gauges and gauge attachments. It also specifies the accuracy, range, scale graduation, dial size, case material, connection size and type, and other features of pressure gauges and gauge attachments.

Asme B40100 is a useful resource for engineers who need to select, install, and use pressure gauges and gauge attachments in accordance with the applicable codes and standards. It helps to ensure the safety, reliability, and performance of pressure measurement devices. It also helps to avoid errors and discrepancies that can result from using non-standard or incompatible gauges and attachments.

If you want to download Asme B40100, you can do so from the ASME website. You will need to register as a user and pay a fee to access the digital PDF version of the standard. Alternatively, you can order a print book version of the standard from the same website. The price for both versions is $165 as of May 2023.

In this article, we will show you how to download Asme B40100 from the ASME website in a few simple steps. We will also give you some tips on how to use the standard effectively and efficiently.

Types of Pressure Gauges and Gauge Attachments Covered by Asme B40100

Asme B40100 covers a wide range of pressure gauges and gauge attachments that are used for various applications and industries. The standard classifies pressure gauges into four types based on their accuracy and performance:

Type 1: General Service Gauges. These are the most common and economical gauges that are suitable for general industrial and commercial use. They have an accuracy of ±3% of span for the middle half of the scale and ±5% for the rest of the scale.
Type 2: Test Gauges. These are high-accuracy gauges that are used for testing, calibration, and quality control purposes. They have an accuracy of ±0.5% of span for the entire scale.
Type 3: Precision Test Gauges. These are the highest-accuracy gauges that are used for laboratory, research, and metrology applications. They have an accuracy of ±0.25% of span for the entire scale.
Type 4: Special Application Gauges. These are gauges that are designed for specific applications that require special features or characteristics. They have an accuracy that is specified by the manufacturer or the user.

Asme B40100 also covers various types of gauge attachments that are used to protect, isolate, or enhance the performance of pressure gauges. Some of the common types of gauge attachments are:

Diaphragm Seals. These are devices that separate the pressure medium from the gauge by means of a flexible diaphragm. They are used to prevent corrosion, clogging, or contamination of the gauge by the pressure medium.
Snubbers. These are devices that reduce the effects of pressure surges, pulsations, or vibrations on the gauge. They are used to extend the life and accuracy of the gauge.
Pressure Limiting Valves. These are devices that limit the maximum pressure that can reach the gauge. They are used to prevent overpressure damage to the gauge.

Benefits of Asme B40100

Asme B40100 is a valuable standard for engineers who work with pressure measurement devices. By following the requirements and recommendations of the standard, engineers can benefit from:

Improved safety and reliability. The standard helps to ensure that pressure gauges and gauge attachments are designed, constructed, installed, calibrated, tested, and maintained in a way that minimizes the risks of failure, leakage, or explosion.
Enhanced performance and accuracy. The standard helps to ensure that pressure gauges and gauge attachments are selected, used, and adjusted in a way that maximizes their accuracy, range, resolution, and readability.
Increased compatibility and interoperability. The standard helps to ensure that pressure gauges and gauge attachments are compatible and interchangeable with other devices and systems that use the same codes and standards.
Reduced costs and waste. The standard helps to ensure that pressure gauges and gauge attachments are optimized for their intended applications and environments. This reduces the need for unnecessary or excessive devices, materials, or energy.

History of Asme B40100

Asme B40100 is a standard that has a long and rich history. It traces its origins back to the late 19th century, when the ASME was founded as a professional organization for mechanical engineers. One of the main goals of the ASME was to develop and promote standards for engineering practice and safety.

One of the first standards that the ASME developed was the Boiler and Pressure Vessel Code (BPVC), which was published in 1914. The BPVC was a comprehensive set of rules and regulations for the design, construction, operation, and inspection of boilers and pressure vessels. The BPVC also included standards for pressure measurement devices, such as gauges and attachments.

Over the years, the BPVC grew and expanded to cover more aspects and applications of pressure technology. The BPVC also spawned several subcommittees and sections that focused on specific topics and issues. One of these subcommittees was the B40 Standards Committee on Pressure and Temperature Instruments and Accessories.

The B40 Standards Committee was established in 1925 to develop and maintain standards for pressure and temperature measurement devices. The B40 Standards Committee published several standards for different types of devices, such as thermometers, thermocouples, pressure transducers, and pressure gauges. One of these standards was B40.1, which was first published in 1949 as a standard for pressure gauges.

B40.1 was revised and updated several times over the decades to reflect the changes and advances in pressure gauge technology and practice. In 2005, B40.1 was renamed as B40.100 to align with the ASME numbering system. In 2013, B40.100 was revised to include gauge attachments as well as gauges. In 2022, B40.100 was revised again to incorporate the latest developments and innovations in pressure measurement.

Differences Between Asme B40100 and Other Standards for Pressure Measurement

Asme B40100 is not the only standard that covers pressure measurement devices. There are other standards that are developed by different organizations and bodies for different purposes and regions. Some of these standards are:

ISO 5171: This is a standard that is developed by the International Organization for Standardization (ISO). It covers gas welding equipment – pressure gauges used in welding, cutting and allied processes.
DIN EN 837-1: This is a standard that is developed by the German Institute for Standardization (DIN) and adopted by the European Committee for Standardization (CEN). It covers pressure gauges – part 1: bourdon tube pressure gauges – dimensions, metrology, requirements and testing.
ANSI/ISA-37.2: This is a standard that is developed by the American National Standards Institute (ANSI) and the International Society of Automation (ISA). It covers electronic pressure transmitters.

These standards have some similarities and differences with Asme B40100. Some of the similarities are:

They all cover analog, dial-type gauges that use elastic elements to sense and indicate pressure.
They all specify accuracy classes or grades for different types of gauges.
They all provide requirements and recommendations for design, construction, installation, calibration, testing, and maintenance of pressure measurement devices.

Some of the differences are:

They cover different scopes and applications of pressure measurement devices. For example, ISO 5171 covers only gas welding equipment, while Asme B40100 covers general industrial and commercial use.
They use different units and symbols for pressure measurement. For example, DIN EN 837-1 uses bar as the unit of pressure, while Asme B40100 uses psi or kPa.
They have different definitions and classifications for accuracy and performance of pressure measurement devices. For example, ANSI/ISA-37.2 uses percentage of calibrated span as the measure of accuracy, while Asme B40100 uses percentage of span or scale length.

How to Install and Maintain Pressure Gauges and Gauge Attachments

Asme B40100 provides detailed guidance on how to install and maintain pressure gauges and gauge attachments. Here are some of the main points to consider:

Before installation, check the pressure gauge and gauge attachment for any damage, defects, or contamination. Make sure they are compatible with the pressure source and the application.
Install the pressure gauge and gauge attachment in a location that is accessible, visible, and protected from excessive heat, cold, moisture, vibration, shock, or corrosion. Use proper tools and fittings to ensure a leak-free connection.
Calibrate the pressure gauge and gauge attachment before use and at regular intervals according to the manufacturer’s instructions or the applicable codes and standards. Use a traceable reference standard or device to verify the accuracy and performance of the pressure measurement device.
Test the pressure gauge and gauge attachment after installation and calibration to ensure they are functioning properly and safely. Check for any leaks, drifts, errors, or anomalies in the pressure indication.
Maintain the pressure gauge and gauge attachment in a clean and dry condition. Avoid exposing them to dirt, dust, oil, grease, or chemicals that can affect their operation or accuracy. Replace any worn or damaged parts as soon as possible.

Conclusion

Asme B40100 is a comprehensive and authoritative standard for pressure gauges and gauge attachments. It covers the design, construction, installation, calibration, testing, and maintenance of these devices. It also specifies the accuracy, range, scale graduation, dial size, case material, connection size and type, and other features of these devices. It is a valuable resource for engineers who work with pressure measurement devices in various applications and industries.

In this article, we have shown you how to download Asme B40100 from the ASME website in a few simple steps. We have also given you some tips on how to use the standard effectively and efficiently. We hope you have found this article helpful and informative. Thank you for reading.

Asme B40100 Download