Chapter 9. Diagnostics and Troubleshooting

9.1 Error Code Messages

Error Code messages appear on the screen while you are displaying measurements. When logs appear in graph form, errors are indicated by a vertical gray bar at the point of error. When they appear in a spreadsheet format, errors are indicated by their number, in place of the measurement. The Error Code messages are only general descriptions of the possible problems. Use Table 7 below to isolate and remedy the problem. If you are unable to remedy the problem, contact the factory.

Note: We suggest that, in order to isolate the indicated problem more easily, you obtain a test flowcell. Contact the factory for details.

Table 7: Error Messages

Error

Problem

Possible Cause

Action

 

 

 

 

E0

No error.

Displays briefly after dis-

None required.

 

 

play of another error

Measurement is valid.

 

 

message

 

 

 

 

 

E1

Low Signal - Poor

Broken cable.

Check transducer cable. See

 

ultrasonic signal

Flowcell problem.

Flowcell Problems on page 208

 

strength.

Transducer problem.

and Transducer Problems on

 

 

Electronic failure.

page 210. Check programming

 

 

 

and transducer spacing.

 

 

 

Contact the factory if problem

 

 

 

persists.

 

 

 

 

E2

Soundspeed Error

Poor flow conditions.

Check soundspeed against

 

(Soundspeed is

Incorrect programming.

nominal soundspeed.

 

programmed using

Bad transducer spacing.

See Flowcell Problems on

 

the Program Menu

Measurement is very

page 208 and Transducer

 

Pipe option, as

different from the

Problems on page 210.

 

described in

programmed

Check programming and

 

Chapter 5.)

soundspeed.

transducer spacing.

 

 

 

 

204

Transport® Model PT878 Portable Liquid Flowmeter User’s Manual

Page 219 Page 221
Page 220
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GE PT878 user manual Error Code Messages, Error Messages
Page 219 Page 221

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.
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