ADS Environmental Services Eureka2R QR 775019 A1 - Manual (Page 43)

ADS Eureka2R Leak Noise Correlator User Manual
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HDPE Diameter in Inches (mm) Velocity in Feet Per
Second (m/s)
Filters (Hz)
Mic/Mic
Filters (Hz)
Hydro/Hydro
High-Density >0.98 (<25) 1296 (395) 25 to 500 3 to 250
Polyethylene 0.98 to 1.97 (25 to 50) 1247 (380)
2.36 to 5.91 (60 to 150) 1214 (370)
>5.91 (>150) 1148 (350)
LE Diameter in Inches (mm) Velocity in Feet Per
Second (m/s)
Filters (Hz)
Mic/Mic
Filters (Hz)
Hydro/Hydro
Lead <0.98 (<25) 4003 (1220) 100 to 1000 25 to 500
>0.98 (>25) 3806 (1160)
MDPE Diameter in Inches (mm) Velocity in Feet Per
Second (m/s)
Filters (Hz)
Mic/Mic
Filters (Hz)
Hydro/Hydro
Medium
Density
Polyethylene
<0.98 (<25) 1247 (380) 25 to 500 3 to 250
0.98 to 1.97 (25 to 50) 1181 (360)
2.36 to 5.91 (60 to 150) 1148 (350)
>5.91 (>150) 1115 (340)
WARNING: The velocity may vary among MDPE pipes. The values
provided in this table are theoretical and, therefore, may cause errors in
practical applications. Therefore, ADS strongly recommends
measuring the actual velocity on-site wherever possible.
PVC Diameter in Inches (mm) Velocity in Feet Per
Second (m/S)
Filters (Hz)
Mic/Mic
Filters (Hz)
Hydro/Hydro
PVC <0.98 (<25) 2165 (660) 25 to 500 3 to 250
0.98 to 1.97 (25 to 50) 1854 (565)
2.36 to 3.94 (60 to 100) 1772 (540)
4.33 to 7.87 (110 to 200) 1739 (530)
>7.87 (>200) 1706 (520)