Siemens SITRANS F M Intermag 2, Operating Instructions Manual

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Operation
5-36
SITRANS FM Intermag 2 Flow Transmitter
Operating Manual - A5E00102775-03
You can generate signals with positive and negative logic (positive and
negative pulses). Figure 5-16 illustrates the setting options.
active- positive
U[V]
Time
active-negative
U[V]
Time
passive-positive
I
[mA]
Time
passive-negative
I
[mA]
Time
Transistor T
2
conductive
Transistor T
2
conductive
Transistor T
2
disabled
Transistor T
2
disabled
Figure 5-16 Signal types for digital output 1
S
Pulse rate , menu item 4.2.3
The pulse valency indicates how many pulses per unit of volume or
mass are output.
When the ”Pulse” function is selected, you have to set the number
of pulses per unit of volume or mass.
S
Pulse width , menu item 4.2.4
You can determine the pulse/pause ratio of the pulse output with the
pulse width. The pulse width can be set in a range from 0.1 to 2000
ms. A maximum pulse width is calculated in relation to the set full
scale value and the set pulse valency. The maximum pulse
frequency is 5 kHz.
S
Full scale frequency , menu item 4.2.5
The frequency is permanently assigned to the flow. The pulse/pause
ratio is constant 1:1. If the ”Full scale frequency” function is
selected, the frequency is set in the range from 2 ... 10000 Hz.