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GE PT878 user manual Mounting the RTD to the Pipe, Making Electrical Connections

Models: PT878

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Appendix C. Temperature Transmitter Installation

C.2.2 Mounting the RTD to the Pipe

Use the steps below to fasten the RTD to the pipe:

1.Prepare the pipe where you intend to place the RTD. The area should be clean and free of loose material.

2.Apply couplant (GE part number 401-001) to the copper face of the RTD. Use enough couplant to cover the face of the RTD, but not so much that the couplant oozes out from underneath.

3.Position the RTD on the pipe and wrap the clamping fixture around the pipe.

4.To secure the RTD, you place the feeder buckle into the screw buckle and use a screwdriver to tighten. Turn the screw clockwise until the strap is set securely against the RTD.

Proceed to the following section to make electrical connections.

C.3 Making Electrical Connections

The PT878 will not accept a signal directly from the RTD; therefore, you must have some type of 4 to 20-mA transmitter. The factory supplies a dual transmitter (DTR) with a special LEMO connector that attaches to the PT878. The PT878 supplies power to the DTR using an internal 16 V supply. If you decide to supply your own transmitter, you can use the 16 V supply to power your transmitter; however, you will need to order the special LEMO connector cable to connect your transmitter to the PT878.

To make electrical connections, you must connect the RTD sensor to the 4 to 20-mA transmitter, and then connect the DTR to the PT878. Use the following sections to make electrical connections.

Transport® Model PT878 Portable Liquid Flowmeter User’s Manual

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GE PT878 user manual Mounting the RTD to the Pipe, Making Electrical Connections
Page 260 Page 262

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.