Path Parameters - Accusonic 8510+ series Reference Manual

TOP WEIGHT
SURCH TRAP / PIPE
NUM of LAYERS
LAYER ELEV'N 1
LAYER ELEV'N 2
LAYER ELEV'N 3
LAYER WIDTH 1
LAYER WIDTH 2
LAYER WIDTH 3
Notes:
The layer elevations must be in strict height order.

Two layers cannot be given the same elevation.

Data entered in layers having numbers higher than the parameter NUM of LAYERS will be ignored

For a Round Pipe, the layer configuration given on page 7-11 is recommended

The Surcharge Level parameter for a given section should not be set higher than the top layer

elevation. It should be set equal to the top layer elevation or slightly less.

Path Parameters

The paths are numbered in sequence, 1 through 8, any of which can be allocated to any section. The
individual paths are each described by:
LENGTH
ANGLE
WEIGHT
The weighting coefficient used to correct the extrapolated surface velocity.
C
Usually set to 0.1.
Set to 0 in narrow conduits.
C Selects the integration method to be used when the conduit is
surcharged.
Set to 0 if surcharged trapezoidal mode is to be used.
Set to 1 if "Pipe" mode is to be used.
C Number of layers used for defining the conduit cross-section area.
Any number between 2 and 8 layers may be defined.
C The elevation of the conduit bottom or invert relative to the site
datum. Range –5000 to +5000.
C The elevation of the next layer above the bottom relative to the
site datum.
C The elevation of the next layer, if required.
If the conduit is closed, the elevation of the highest
layer must be equal to or greater than that of the soffit or top of
the conduit.
If the conduit is an open channel, the elevation of the highest layer must be
greater than that of the highest possible Level.
C The effective width of the conduit at the bottom or invert of the conduit.
Range 0.0 to 300.
C The width of the next layer above the bottom..
C The width of the next layer, if required.
The length between the transducer faces which are in contact with the water.
Standard range: 1.0 to 50ft or 0.3 to 15m
Extended range 300ft or 90m
The angle in degrees between the acoustic path and the center line of the conduit.
Range of values: 10.00 to 80.00
The weighting constant for the path.
Range: 0.000 to 1.000
This parameter is used only in "Pipe" mode; it is ignored in "Compound" mode.
For a multi-path pipe, the sum of all the weights should be approximately 1.0.
User Defined Parameters 7-5