SE/SG-300 series two-wire compact ultrasonic level transmitters
23
P03: - - - a
Values displayed - Rounding
It is important to keep in mind that the instrument is measuring distance as basic quantity.
Measured Distance
Resolution
X
min
– 2m
1mm
2m – 5m
2mm
5m – 10m
5mm
10m over
10mm
The resolution depending on the distance can be considered as a kind of
rounding that will be contained in all further value (of level, volume or volume
flow) calculated. Therefore if programmed for DIST or LEV measurement the
setting of P03 is irrelevant.
Displayed VOL or FLOW
Displaeyed Value
Display Format
0,000 – 9,999
x,xxx
10,000 – 99,999
xx,xx
100,000 – 999,999
xxx,x
1000,000 – 9999,999
xxxx,x
10000,000 – 99999,999
xxxxx,x
100000,000 – 999999,999
xxxxxx,x
1 millió – 9,99999*10
9
x,xxxx : e
(exponential format)
1*10
10
over
(overflow) Err4
Obviously the decimal position will be shifted with increasing value displayed.
(See table at the left).
Values over one million will be displayed in exponential format whereas the
value (e) represents the exponent. Over the value of 1x10
10
Err4 (overflow) will
be displayed.
Rounding
Parameter Value “a”
Steps In The Displayed
Value
0
1 (no rounding)
1
2
2
5
3
10
4
20
5
50
A couple of millimetres of fluctuation of the basic DIST value (e.g. due to
waves) will be enlarged by the mathematical operations. This enlarged
fluctuation in displaying VOL or FLOW can (if disturbing) be avoided by
rounding to be set in P03. Rounding value 2, 5, 10 etc represents the steps by
which the calculated value will be changed in its (one or two) last digit(s).
Examples:
P03=1 steps by 2: 1,000; 1,002; 1,004
P03=5 steps by 50: 1,000; 1,050; 1,100 or 10,00; 10,05(0); 10,10(0);
10,15(0)
(the 0 from the steps 50, 100, 150 etc will not be displayed)
FACTORY DEFAULT: 0
