Analog Output Specification; Digital Inputs And Outputs; Digital Outputs - Siemens SITRANS FC120 Operating Instructions Manual

Coriolis fowmeters
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FC1x0
Transmitter
11.1.1.3

Analog output specification

Analog output
If mass- or volume flow, density, temperature, pressure or concentration is measured via
specification lout
current output Iout two additional deviation effects have to be taken into account.
▪ The Iout –base specification ∆I
▪ The Iout –ambient temperature specification ∆I(T
Both additional output deviation effects have to be added to the basic mass- or volume
flow, density, temperature, pressure or concentration deviation. They are based on a 95
% (2 σ ) confidence level.
Deviation of mass-
The following formula can be used to calculate the deviation of mass- or volume flow:
or volume flow,
density,
temperature,
D
pressure or
concentration by
lout
D
I
D
I(Q)
ΔI
ΔI(T
a, b, c, d
Description
Non-intrinsically
safe Iout
(active or passive)
Intrinsically
safe Iout
(passive)
1)
Formula or value for accuracy of specific output parameter, please see chapters:
▪ 3.4 Accuracy of density
▪ 3.6 Volume flow accuracy
▪ 3.7 Accuracy of temperature

11.1.2 Digital inputs and outputs

11.1.2.1 Digital outputs

Active pulse output
Connection of an electronic counter
P/Sout
Maximum voltage and correct polarity must be observed for wiring.
Terms
Load resistance
68 / 168
linearity, power supply variation, load resistance variation, short and long term drift for
one year.
effect if the ambient temperature of the transmitter differs from 20 °C.
(
∆I
2
base
=
D
+
x 100 %
I
I (Q)
Maximum deviation of mass- or volume flow, density, temperature,
pressure or concentration by Iout in %
Maximum deviation of mass- or volume flow, density, temperature,
pressure or concentration
Iout depending on mass- or volume flow, density, temperature, pressure or
concentration in µ A
Maximum deviation of Iout by combined effects
base
∆I
= a × I(Q) + b
base
Maximum deviation of Iout by deviation of the transmitter ambient
)
temperature from 20 °C
amb
ΔI(T
) = (c × I(Q) + d) × (T - 20 °C)
amb
Constants
Order code
pos. -Z
E06+F11...F
23 E14+F37
E07+F01...
F04
A5E52595189-AA, 2023/09
contains all combined effects of output adjustment,
base
2
)
(
)
2
∆I
(T
)
amb
+
x 100 %
I (Q)
1)
by pulse/frequency output in %
a
in ppm
170
[}
30]
[}
32]
[}
32]
Value
> 1 kΩ
Electrical interfaces
) gives an additional deviation
amb
b
c
in µ A
in ppm/°C
2.3
7
d
in µ A/°C
0
0.06

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