User manual for - FLOW METER SPP-N118
a) I
in
=10 mA and I
n
= 0,375
Accordingly to expression on page 41 for linear characteristic:
0,375 × [1200 - 300]
≅
337 and next, the
“Lo CAL”
value is added to the result , so the
displayed value:
W
≅
337 + 300 = 637
b) I
in
= 2,5 mA and
I
n
= -0,0938.
W
≅
216.
c) I
in
= 20,5 mA and
I
n
= 1,0313.
W
≅
1228.
Example
4
: The square characteristic
Let the input mode = 4-20 mA, and parameters
“Lo CAL”
and
“Hi CAL”
equal to 300
and 1200 respectively. The calculations will be done for there different input currents from
example 2.
a) I
in
=10 mA and I
n
= 0,375
Accordingly to expression on page 42 for square characteristic: (0,375)
2
× [1200 - 300]
≅
127.
and next, the
“Lo CAL”
value is added to the result , so the displayed value:
W
≅
127 + 300 = 427
b) I
in
= 2,5 mA and
I
n
= -0,0938.
W
≅
308.
c) I
in
= 20,5 mA and
I
n
= 1,0313.
W
≅
1257.
Example
5
:
The square root characteristic
Let the input mode = 4-20 mA, and parameters
“Lo CAL”
and
“Hi CAL”
equal to 300
and 1200 respectively. The calculations will be done for there different input currents from
example 2.
a) I
in
=10 mA and I
n
= 0,375
Accordingly to expression on page 43 for square root characteristic:
0,375
× [1200 - 300]
≅
551.
and next, the
“Lo CAL”
value is added to the result , so the displayed value:
W
≅
551 + 300 = 851
b) I
in
= 2,5 mA and I
n
= -0,0938 , normalized result is negative , so the displayed value is equal
to
“Lo CAL”
parameter: W
≅
“Lo CAL”
= 300.
c) I
in
= 20,5 mA and I
n
= 1,0313.
W
≅
1214.
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