Aalborg Vortex Insertion - Manual (Page 43)

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- Diagnostic: Output will be energized when any of the Diagnostic or System
events are active
- Manual On Control: Output will be energized until Disabled option will be
selected.
By default both optically isolated outputs are disabled.
5.3.6.3 Submenu L2 RS-485 Address Menus
The standard Vortex flow meter comes with an RS-232 interface. For the optional
RS-485 interface, two hexadecimal characters of the address must be assigned.
By default each flow meter is shipped with RS-485 address 11. When more than
one device is present on RS-485 bus each device should have unique address. The
two characters of address in the hexadecimal representation can be changed from
00 to FF.
RS-485 address setting is not used for Vortex flow meter with RS-232 interface.
5.3.7 Submenu L1 Calibration Menu
The Calibration Menu contains the calibration coefficients for the flow meter, DSP
algorithm settings and Noise Reduction Filters parameters. These values should be
changed only by properly trained personnel. The Pipe ID, Vortex Meter Calibration
Factor, Full Scale Range and Low Flow Cutoff are set at the factory. Consult the fac-
tory for help with these settings if the meter is showing erratic flow rate.
NOTE: Address 00 is reserved for global addressing. Do not assign, the
global address for any device. When command with global address is
sent, all devices on the RS-485 bus execute the command but do not
reply with an acknowledge message.
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NOTE: Do not assign the RS-485 address for two or more devices on
the same RS-485 bus. If two or more devices with the same address
are connected to the one RS-485 network, a communication collision
will take place on the bus and communication errors will occur.
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NOTE: Your Vortex Flow Meter was calibrated configured at the factory
for the specified fluid, flowing conditions, and full scale flow range
(see device’s label or calibration data sheet). There is no need to adjust
the Flow Meter calibration factor, unless adjustment for specific
installation or flowing conditions high or low frequency off is needed.
Any alteration of the flow meter calibration factor will VOID calibration
warranty supplied with instrument.
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