Siemens SITRANS F M Intermag 2, Operating Instructions Manual

Page: 75 / 130

Operation
5-27
SITRANS FM Intermag 2 Flow Transmitter
Operating Manual - A5E00102775-03
S
Hysteresis , menu item 3.1.3.3
The limit values (menu items 3.1.3.1 and 3.1.3.2 ) can have a
hysteresis added to prevent ”fluttering” of the switching output
(see Figure 5-9).
S
Density , menu item 3.1.4
You must specify unit and density here. The volume flow q
v
is
converted to mass flow q
m
automatically using the
formula (q
m
= q
v
* r ).
Measured variable
limit
max.
time
hysteresis
Measured variable
limit
min.
time
hysteresis
limit alarm
limit alarm
Figure 5-9 Limit value message and hysteresis
S
Direction , menu item 3.1.5. This item is divided into:
- Flow direction , menu item 3.1.5.1
The flow direction is preset at the factory and indicated by the
arrow on the sensor. If the flow direction does not match the
direction of the arrow it must be adapted in this menu item.
Signal
Analog
output
Pulse/Freq.
output
Signal
Analog
output
Pulse/Freq.
output
Measuring direction or flow direction
reverse forwards
Measuring direction or flow direction
reverse forwards
Figure 5-10 Setting forw.+rev. Figure 5-11 Setting forwards