VEGA VEGASON 71 - D - Manual (Page 24)

VEGASON 71 - D 24
7.1.4 Integration time
An integration time can be programmed in mode 0 - 17 to
damp probable fluctuations during the indication of
measured values.
Programming example
Integration time = 10 secs.
• Enquire mode
0 - 17 in the MODEFIELD
• Program figure 010 in the PARAMETER FIELD
• Then store with STO
7.2 Adjustment max. flow
The adjustment of the max. flow at 100 % is necessary to
enable the conversion of flow to flow volume.
The value given by the manufacturer of the weir or flume
at max. flow must be adjusted (this value must be reached
at 100 % of the adjustment carried out).
If the weir of flume is oversized or the data for max. flow
are not known, the required adjustment parameters can be
determined as described in chapter "7.6 Calculation
examples of the max. flow".
Note
The adjusted measuring unit is also valid for the following
programmings of the pulse rate.
Example
Max. flow acc. to manufacturers data = 364 m 3 /h
corresponds to 0364 x 1 m 3 /h
- Mode
0 - 82
, flow = 0364
- Mode 0 - 83 , multiplier = 0
- Mode 0 - 84 , time unit = 3 (h)
Programming
Flow = 364
• Enquire mode
0 - 82 in the MODEFIELD
• Program figure 0364 in the PARAMETER FIELD
• Then store with STO
Multiplier = 0
• Enquire mode
0 - 83 In the MODEFIELD
• Program figure 0 in the PARAMETER FIELD
• Then store with STO
Time unit = 3
• Enquire mode
0 - 84 In the MODEFIELD
• Program figure
3
in the PARAMETER FIELD
• Then store with STO
7.3 Impulse value for flow relay
It is possible to connect a counter to VEGASON 71 - D to
detect the flow quantity. When using a 24 V counter, it can
be directly connected to the flow module, terminal 9 and
10.
In mode 0 - 85 and 0 - 86 the multiplier of the step-down
ratio (flow volume/pulse) can be determined.
Note
The instrument automatically takes the measuring unit
selected for the adjustment of the max. flow.
Example
One impulse on the counter per 5 m 3
corresponds to 0005 x 1 m 3
- Mode 0 - 85 , flow volume / impulse = 0005
- Mode 0 - 86 , multiplier = 0
Programming
Flow volume / impulse = 0005
•
Enquire mode
0 - 85
in the MODEFIELD
• Program figure 0005 in the PARAMETER FIELD
• Then store with STO
Multiplier = 0
•
Enquire mode 0 - 86 in the MODEFIELD
• Program figure 0 in the PARAMETER FIELD
• Then store with STO
7.4 Impulse value for sampling relay
A sampler can be connected to VEGASON 71 - D. The
sampling relay is provided for the connection of such an
instrument. The control for the sampler can be carried out
flow dependent, time dependent or combined.
Mode 0 - 87 and 0 - 88 for flow dependent control, mode
0 - 89 for time dependent control.
Note
For flow dependent control the instrument automatically
takes the measuring unit selected for the adjustment of
max. flow.
7 Output results