VEGA VEGASON 71 - 2 … 75 - 2 - Manual (Page 22)

Adjustment at differential measurement
22 71 - 2 … 75 - 2
Differential measurement
A differential measurement can be obtained with
the measuring system VEGASON 71 - 2 … 75 - 2.
The difference is formed out of the values of chan-
nel 2 minus channel 1. If possible, mount the
sensors at the same height.
The adjustment is made for both measuring chan-
nels together in mode range no. 30 … 32.
It is possible to adjust channels 1 and 2 separately
as described under level measurement.
The display coordination is defined as follows in
mode 0 - 40:
0 - 4 0
1 1
0 = display 2 switched off
1 = display 2 indicates level
of channel 2
2 = display 2 indicates difference
0 = display 1 switched off
1 = display 1 indicates level
of channel 1
2 = display 1 indicates difference
The pre-adjustment 1 for mode 0 - 30 should not be
changed.
Mode description
Mode 0 - 30 = 1 mean adjustment in m without product level change, i.e.
- with this adjustment procedure various differences (levels, gauges etc.) are
programmed relating to the values 0 % and 100 %
- already available levels or water gauges are unimportant
Selection of adjustment procedure MODE 0 - 30
MODE 0 - 40
Programming example
for
- differential level on display 1
- level 2 (downstream water) on display 2 .......
• select mode 0 - 40 in MODEFIELD
• program figure 21 in PARAMETER FIELD
• then store with STO-button