CiDRA SONARtrac PW VF-100 - Manual (Page 152)

20834-01 Rev 04 Page 8-8
OUTPUT CONFIG
·4-20mA CH1
HIGH END
053.44% 2499.8gal/m
8.3 Output Config Menu
These inputs are used to configure the various outputs from the
transmitter.
8.3.1 4-20mA (CH 1 & CH 2)
Several selections are available for setup of the current outputs under
the 4-20mA setup menu screens.
8.3.1.1 Output Sel
The Output Sel sub-menu selection permits selection of the parameter
to output on the 4-20mA channels.
8.3.1.2 Power Sel
The power Sel select
ion is used to specify whether ‘Internal’ (i.e.
transmitter) power or ‘External’ (i.e. loop) power is used for the 4-
20mA current output.
8.3.1.3 Low End and High End
The Low End and High End menu selections allow the user to change
the ranges that are output on the 4-20mA channel.
Flow rate output corresponds to the flow values for the 4mA and
20mA current settings. The specific flow rates that correspond to
the two limits in the current output are set by the user, who
specifies a percentage of the total flow range of the meter.
GVF output corresponds to the GVF values for the 4mA and 20mA
current settings. The specific GVF values that correspond to the
two limits in the current output are set by the user, who specifies a
percentage between 0% and 100%.
The following figure shows an example screen shot of a user specified
High End setting. The user settable percentage is located on the left
side of the bottom line of the display, with the corresponding flow
value shown on the right. The percentage represents a point within
the output range of the meter. In the example shown (8-inch schedule
40 pipe and the meter maximum flow rate of 30 ft/sec or 4677.8 gpm),
the high end of the 20mA output is scaled to 053.44% that is
equivalent to 2499.8 (2500) gpm.
Figure 1 Output Configuration Example Screen