Flow Rate Ratio: F5 - Omron K3NR Operation Manual

Flow Rate Ratio: f5

Flow Rate Ratio: f5
3-5
FUNCTION
SETTING
REFERENCE
34
Application example
Basic Operation
From the frequency of INA and INB, displays the flow rate ratio of INB in percent-
age. Obtain display value D as follows:
D (%) =
f : Input frequency of INA (Hz)
A
f : Input frequency of INB (Hz)
B
α: Prescale value of INA
β: Prescale value of INB
Mode Unit of display
Flow rate ratio %
Where,
Na: Number of pulses for specific quantity of A input
Nb: Number of pulses for specific quantity of B input
Example:
Displaying mixed liquid concentration calculated from the flow rate ratio of
two flow sensors each with a capacity of 10 /400 rpm.
Prescale value of INA (α) = 10/400 = 0.025 = 2.5000 x 10
Prescale value of INB (β) = 10/400 = 0.025 = 2.5000 x 10
Y
Prescale value = X x 10
X (mantissa) of input A = 2.5000
Y (exponent) of input A = –2
X (mantissa) of input B = 2.5000
Y (exponent) of input B = –2
Refer to 4-2 Setting Mode.
A
B
Measures the flow rate
ratio of the mixture of A
and B.
x β
f
B
x β
f x + f
α
A B
Prescale value
INA
INB
(X: mantissa, Y: exponent)
Section 3-5
x 100
Na
Nb
–2
–2