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Noise Suppress This button allows you to mark one or more sections of
the correlation so that these areas will not be used for the correlation
calculations. Suppress Start marks the position of the cursor. Moving the
cursor, using the left and right arrow keys, causes a suppression zone to appear
symmetrically about the Suppress Start point (the cursor moves with the edge
of the zone). Selecting the Suppress Stop button records the width of the
suppression zone. Selecting the Suppress Clear button deletes the
suppression zone indicated by the cursor; selecting the Clear All button
removes all suppression zones. Because the vertical scaling of the display
occurs automatically, suppressing a section with a high correlation peak will
expand the remainder of the display.
Listen
The Listen mode enables you to store the noise levels detected by a sensor and
display them on the Eureka2R screen. Place the accelerometer in a position
near a suspected leak and record the noise level. Then, move it a known
distance along the line of the pipe and record the noise at that position. Repeat
this process to obtain a profile of the noise levels at known (and equal)
intervals over a distance.
The current noise level displays as the dark section of a vertical bar at the left
side of the screen. Pressing the Next button stores the noise level (in the dark
section only) to the right of the vertical bar. Stored noise levels are numbered
consecutively.
Note: Since processing the signal causes a delay before the noise
level displays, do not record the noise level until it has stabilized.
Clear Clears the display to prepare for the next set of measurements.
Adjust Allows you to change the screen, headphone, and noise measurement
settings. The Correlate – Adjust section provides a description of these
settings.
Mute Silences the microphone, allowing the movement of equipment without
excess noise in the headphones. To restore sound, press the button again.
ADS Eureka2R Leak Noise Correlator User Manual
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