Chapter 3. Programming Site Data

3.3Entering Pipe Parameters (cont.)

If you select a material that uses the Diameter alternative:

a.You must select from two choices, outside diameter or circumference.

The prompt moves to the OD (outside diameter) text box. Type the thickness (in mm or in.) into the text box, and press [ENTER] to confirm the choice, or

Move the prompt to the OD X PI (circumference) text box. Type the OD (in mm or in.) into the box, and press [ENTER] to confirm your choice.

b.In either case, the next prompt asks for the wall thickness. Type the value (in mm or in.) into the box, and press [ENTER] to confirm your choice.

Note: The measurement units shown depend on the choices you have made in the English/Metric window or the Meter Settings menu.

If you select a material that has the Schedule option:

a.The prompt asks if you wish to apply ANSI (the ANSI schedule). Press [ENTER] to select (or deselect) the ANSI box. (If you do not select the ANSI option, the prompt moves to the OD text box, and you enter the parameters for the Diameter alternative as discussed above.)

b.Press the [W] key twice to move the prompt to the Nominal pipe size drop-down menu. Press [ENTER] to open the menu. Scroll to the desired pipe size, and press [ENTER] to confirm your choice.

c.Press the [X] key to move the prompt to the Schedule drop-down menu. Press [ENTER] to open the menu. Scroll to the desired schedule, and press [ENTER] to confirm the choice.

After entering either diameter or schedule settings, pressing the [S] key returns the meter to the Pipe Material prompt.

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Transport® Model PT878 Portable Liquid Flowmeter User’s Manual

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GE PT878 user manual Entering Pipe Parameters

PT878 specifications

The GE PT878 is a state-of-the-art portable ultrasonic flow meter designed for the precise measurement of liquid flow in various applications. As part of General Electric’s renowned instrumentation lineup, the PT878 combines innovative technology with user-friendly features, making it an invaluable tool for engineers, technicians, and plant operators.

One of the standout characteristics of the PT878 is its non-invasive measurement capability. The meter utilizes clamp-on transducer technology, allowing it to be installed on the exterior of the pipe, eliminating the need for invasive procedures which can disrupt the system or require pipe cutting. This non-contact approach not only simplifies installation but also enhances the device’s versatility, as it can be applied to a wide range of pipe sizes and materials.

The PT878 leverages advanced digital signal processing and sophisticated algorithms to provide accurate and reliable flow measurements. It operates using the time-of-flight method, whereby ultrasonic signals are sent and received through the fluid in the pipeline to determine the flow rate. This technology allows for remarkable precision, ensuring that operational efficiency can be maintained.

Moreover, the PT878 is equipped with features such as a bright, easy-to-read display, intuitive navigation, and robustness against harsh environmental conditions. Its compact and lightweight design enhances portability, making it suitable for field applications. The meter operates on battery power, providing a long-lasting solution for remote monitoring and temporary installations.

Another impressive aspect of the PT878 is its ability to measure not only water but also a variety of liquids, from hydrocarbons to chemicals. It supports multiple measurement modes, including volumetric flow and velocity, offering a level of flexibility that caters to diverse industrial needs.

In addition to flow measurement, the PT878 offers data logging capabilities, allowing users to store and analyze flow data over time. This function is vital for understanding trends, diagnosing issues, and optimizing system performance. Users can easily transfer data to computers for comprehensive analysis, enhancing operational insights.

With its combination of innovative technology, user-friendliness, and robust measurements, the GE PT878 ultrasonic flow meter stands out as a comprehensive solution for industries requiring reliable liquid flow measurement. Whether in a manufacturing plant, a water treatment facility, or any application requiring fluid monitoring, the PT878 delivers exceptional performance and accuracy.