After the measurement comes the evaluation.

The GLD 700 analysis software.

With the GLD 700 PC analysis software, before a pipeline run the operating parameters are sent to the detector, and after the run the stored data are selected, converted, and prepared for graphical evaluation.

Parameterization of a pipeline run

Different parameters for the starting and stopping conditions, as well as documentation of other run parameters, such as “run number” and “pipeline number”, can be set. The exact wheel diameter of the odometer is entered.

Preparation of pipeline run

All parameters that are set can be printed as documentation, and stored as a standard parameter set.

Graphical evaluation of data records

The data record can be displayed as an overview of the entire run, or in detail. All measured values such as leak, pressure and distance are shown both graphically and numerically.

Search algorithms for distance, marker and leak intensity, as well as others, allow you to seek out interesting ranges in the data record. The data record can be corrected and optimized by special features. Also, ranges at the beginning and end of the data record known to be of no interest can be eliminated.

Marked ranges of the data record can be printed or optionally exported as a text file, where the data can be processed with other programs. The battery discharge curve shows the change in capacity over time. So the correct time to recharge the batteries can be determined, and pipeline runs with weak batteries can be avoided.

The graphs for pressure, speed and odometer, and the search thresholds for leaks and markers can be suppressed for greater clarity.

Graphical evaluation - Overview

Self-checking

Before each pipeline run, a self-test of the unit can be done to guarantee correct functioning. The results of the test can be printed as documentation.

Creation of reference lists

Reference lists can be added, containing the different types of waypoints and their distances to the starting pig trap. These are also used to automatically compute all distances in the data record.

Graphical evaluation - Detail

Comparison of two data records

To compare two data records with each other, they can be displayed horizontally, one above the other. Noises of interest observed from run to run can be further analyzed and their positions better determined. Search algorithms can be used on all of the data graphically displayed in both data records.

Diagnostic tool

Diagnostic Tools

Unusual noise events can be more closely examined and evaluated with special diagnostic tools. These tools simplify leak detection and lead to more certain results.

Features

• Detector setup
  • Input of run parameters for documentation, such as pipeline number, sequence number, date, and time
  • Input of starting parameters to define the beginning of recording, such as date, time, pressure, or position (reset distance)
  • Eingabe von Stoppparametern zum Beenden der Aufzeichnung wie
  • Input of ending parameters for terminating the recording, such as running time, pressure, noise intensity, or duration of noise intensity
• Transfer of the data via USB cable
• Graphical evaluation
• Variable display width
  • Summary presentation of the entire run
  • 10-minute blocks (resolution 1 second)
  • Change between the two displays by mouse click
• Bars showing location within the run, for orientation in the entire data record
• Fast location of relevant points by mouse click in the overview, or by search function (marker, time, distance, etc.)
• Marking and printing individual data
• Automatic distance correction on the basis of a reference list and noted markers
• Inserting the distance measurement when used without the odometer
• Distance correction / setting zero point distance
• Comparison of two data records with the distance measurement as the reference point
• Cursor control of the comparison — independent or combined
• Finest resolution in the normal display: 1 second
• Display of peak and average values in the ultrasonic leak range, as well as peak value of the marker frequency in a bar graph
• Display of pressure, temperature and speed in a line graph
• Further detailed diagnosis with tools for digital signal analysis and processing
• Menus and online help in English, German or Italian; other languages available on special order
• Detector self-test
• Online assistance