Reference Manual

00809-0100-4808, Rev CA June 2008

Rosemount 3051N

FIGURE 3-6. Typical Installation Examples to Illustrate Transmitter and Impulse Piping Locations.

GAS OR LIQUID SERVICE

GAS SERVICE

STEAM SERVICE

Flow

Flow

Flow

Impulse Piping

The piping between the process and the transmitter must accurately transfer the pressure to obtain accurate measurements. There are several possible sources of error: pressure transfer, leaks, friction loss (particularly if purging is used), trapped gas in a liquid line, liquid in a gas line, and density variations between the legs.The best location for the transmitter in relation to the process pipe depends on the process itself. Use the following guidelines to determine transmitter location and placement of impulse piping:

•Keep impulse piping as short as possible.

•For liquid service, slope the impulse piping at least 1 inch per foot (8 cm per m) upward from the transmitter toward the

process connection.

•For gas service, slope the impulse piping at least 1 inch per foot (8 cm per m) downward from the transmitter toward the

process connection.

•Avoid high points in liquid lines and low points in gas lines.

•Make sure both impulse legs are the same temperature.

•Use impulse piping large enough to avoid friction effects and blockage.

•Vent all gas from liquid piping legs.

•When using a sealing fluid, fill both piping legs to the same level.

•When purging, make the purge connection close to the process taps and purge through equal lengths of the same size pipe. Avoid purging through the transmitter.

•Keep corrosive or hot (above 250 °F [121 °C]) process material out of direct contact with the sensor module and flanges.

•Prevent sediment deposits in the impulse piping.

•Keep the liquid head balanced on both legs of the impulse piping.

•Avoid conditions that might allow process fluid to freeze within the process flange.

3-11

Page 44 Page 46
Page 45
Image 45
Emerson Process Management 3051N manual GAS or Liquid Service GAS Service Steam Service
Page 44 Page 46

3051N specifications

The Emerson Process Management 3051N is a state-of-the-art pressure transmitter that exemplifies precision and reliability in process automation. Designed for a wide range of industrial applications, the 3051N is celebrated for its advanced features, innovative technologies, and robust construction, catering to the evolving needs of process industries.

One of the standout features of the 3051N is its exceptional accuracy. With a standard accuracy rating of ±0.075% of span, it ensures precise pressure measurements, critical for maintaining optimal process conditions. This high level of accuracy makes it suitable for applications in industries such as oil and gas, chemicals, and water treatment, where even minor deviations can lead to significant operational issues.

The 3051N employs Smart Pressure Technology, integrating digital communication capabilities with traditional analog systems. This technology allows for seamless interoperability with existing process control systems, providing users with vital data for diagnostics, calibration, and configuration via HART, FOUNDATION fieldbus, or Profibus protocols. These capabilities lead to enhanced process efficiency and reduced downtime due to effective predictive maintenance.

Another notable characteristic of this transmitter is its robust design. The 3051N is built to endure harsh industrial environments, with a rugged housing that is resistant to corrosive and hazardous conditions. Its wide operating temperature range, typically from -40°C to 85°C, coupled with various diaphragm materials, ensures that it can function effectively across diverse applications.

Moreover, the Emerson 3051N incorporates advanced predictive diagnostics, enabling users to monitor the health of the transmitter continuously. This feature alerts operators to potential issues before they escalate, facilitating proactive maintenance strategies that can significantly lower operational costs.

The flexible configuration options offered by the 3051N also enhance its usability. Users can select from a variety of pressure ranges, process connection types, and electrical connections, making it easy to customize the transmitter to fit specific application needs.

In conclusion, the Emerson Process Management 3051N pressure transmitter is a versatile and highly efficient device that integrates advanced technology with robust design and exceptional accuracy. Its ability to adapt to various industrial demands while providing predictive diagnostics makes it a preferred choice for professionals seeking reliability and precision in process management.
Top Page Image Contents