Pulsar UltraTWIN, Инструкция по эксплуатации

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ULTRATWIN (UL) INSTRUCTION MANUAL
168
P*714 Roughness Coefficient (Ks)
When P*700 = 2, BS3680 Flume this parameter is used to enter the
roughness coefficient of the flume in millimetres,
see table below for
further details.
Surface Classification
Value of Ks
Good
Example
mm
Normal
Value
mm
Plastics etc.
Perspex, PVC or other smooth faced
Asbestos cement
Resin-bonded glass-fibre moulded against smooth
forms of sheet metal or well sanded and painted
timber
0.03
0.003
0.015
0.06
Metal
Smooth, machined, and polished metal
Uncoated sheet metal rust free.
Painted metal
Galvanised metal
Painted or coated casting
Uncoated casting
0.003
0.015
0.03
0.06
0.06
0.15
0.006
0.03
0.06
0.15
0.15
0.3
Concrete
In-situ or precast construction using steel
formwork, with all irregularities rubbed down or
filled in.
In-situ or precast construction using plywood or
timber framework
Smooth troweled cement rendering
Concrete with thin film of sewage slime
0.06
0.3
0.3
0.6
0.15
0.6
0.6
1.5
Wood
Planned timber or plywood.
Well sanded and painted
0.3
0.03
0.6
0.06
P*715 Water Temperature
When P*700 = 2, BS3680 Flume this parameter is used to enter the mean
water temperature in
0 C.