51-638 Echotel Model 338 Two-Wire Ultrasonic Transmitter
12
P03: - a
Displayed Values
(Rounding & Decimal Position)
Factory default value for P03 is: 0
Level and distance applications do not use P03 since the
biggest number that can be displayed on the 6 digit LCD
is 600 cm, or 240 inches. Displayed values for volume and
open channel flow applications can become quite large,
and for this reason it may be easier to read the LCD if
rounding is used.
Rounding
Fractional inch changes in a large tank will cause rapid
fluctuations in the LCD when measuring volume.
Turbulence in a tank or open channel flow element may
also cause unwanted display fluctuations. Rounding values
(2, 5, 10, 20, 50) represent the numeric steps the calculat-
ed value will change in the last one (or two) digit(s).
Examples:
P03 = 1 steps by 2: 1,000
⇒
1,002
⇒
1,004
⇒
1,006
P03 = 5 steps by 50: 1,000
⇒
1,050
⇒
1,100
⇒
1,150
Displayed VOL or FLOW
As the numeric display becomes larger in volume and open
channel flow applications, the decimal point is automati-
cally shifted over to accommodate the larger numbers in
the 6 digit LCD.
Values over one million will be displayed in exponential
format where the value (e) represents the exponent. Once
over the value of 1x10
10
Err4 (overflow) will be displayed.
a
Displayed Value Steps
0
1 = no rounding
1
2
2
5
3
10
4
20
5
50
Displayed Value
Decimal Position
00.000 – 9.999
x.xxx
10.000 – 99.999
xx.xx
100.000 – 999.999
xxxx.
1000.000 – 9999.999
xxxxx.
100000.000 – 99999.999
xxxxxx.
1 million – 9.99999*10
9
x.xxxx : e
(exponential form)
over 1*10
10
(overflow) Err4
