Chapter 2. Initial Setup

2.2 Caring for the PT878 Batteries

The PT878 comes with self-contained, built-in rechargeable batteries to support portable operation. For optimum performance, these batteries require a minimum of maintenance.

CAUTION! Use only GE-approved batteries and desktop chargers. These chargers are designed to maximize battery life. Using other batteries or chargers voids the warranty and may cause damage.

IMPORTANT: For CE compliance, the PT878 is classified as a battery-powered device, not to be used with the AC adaptor.

2.2.1 Charging and Storing the Batteries

When you receive the PT878, you will need to initially charge the batteries. Also, the battery may need recharging if it has not been used for a long period of time. The batteries must be charged up to 8 hours to receive the maximum charge. When fully charged, the batteries provide 8 to 10 hours of continuous operation. An internal battery gauge indicates the remaining power in the batteries.

To charge the batteries, simply plug the AC power module cord into the power jack (shown in Figure 2 on page 6) and be sure the battery pack is installed. When the PT878 is plugged into line voltage, the internal battery charger automatically charges the batteries, whether the PT878 is on or off. If the PT878 is on, the Battery icon in the upper right corner of the screen indicates battery status (as shown in Table 2 on page 10).

Note: For version 1B of the PT878 software, you must also press the red power key in the upper right corner of the keypad. (See page 110 to determine your software version.)

For optimal run time, charge the batteries only in temperatures from 50°F to 104°F (10°C to 40°C). Otherwise, the batteries will not be properly charged and will have a significantly reduced run time.

Transport® Model PT878 Portable Liquid Flowmeter User’s Manual

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GE user manual Caring for the PT878 Batteries, Charging and Storing the Batteries

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.