VA Master FAM540 METAL CONE VARIABLE AREA FLOWMETER | OI/FAM540-EN REV. E 55
‘Current output’ Menu
Configure the current output behavior for device alarms in the
current output submenu.
The settings High and Low are available.
• If the setting is High, the current output can be set to a value
from 21 to 23 mA.
• If the setting is Low, the current output can be set to a value
from 3.0 to 3.6 mA.
Note
A single ‘Error 3’ (overshooting of the measuring range) always
results in a high alarm, regardless of the setting!
The current output behavior follows the NAMUR
recommendation NE43.
Figure 27: Current output behavior
The measurement value output at the current output is as shown
in the diagram:
Above the low flow, the current is a straight line that would have
4 mA at Q = 0 and 20 mA at Q = Q
max
operating mode.
Because of the low flow cutoff, the flow rate is set below x% of
Q
max
or the low flow is set to 0, i.e. 4 mA.
‘Function test’ Menu
Submenu Adjustable
values
Description
Iout Numerical A set point for the current output from
4 to 20 mA can be specified.
When the menu is quit, the current output
immediately returns to the current flow
value.
Simulation Off The simulation is switched off (flow mode)
on The simulation is active (simulation mode).
Values from 0 to 110 % can be simulated
with the help of a submenu.
Int. database confirm The internal database of the transmitter
(FRAM) is checked and confirmed with ‘OK’.
Ext. database confirm The checksum of the transmitter software
is checked manually and confirmed with
‘OK’.
The checksum is checked routinely every 30
seconds during operation. An incorrect
result would result in Error 9.
Prog. Output open Switch output at terminals 41 / 42 open
close Switch output at terminals 41 / 42 closed
5 Hz Outputs a 5-Hz-signal at terminals 41 / 42
100 Hz Outputs a 100-Hz signal at terminals 41 / 42
HART®
transmission
confirm The transmission can be executed at 1200
or 2200 Hz
HART® reception confirm Shown when signals are received
Voltages confirm Shows the current voltage at the terminals.
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