CiDRA SONARtrac HD GVF-100 - Manual (Page 82)

Copyright © 2006 CiDRA Corporation Page 10-4
20675-02 Rev 01
OUTPUT CONFIG
- 4-20mA CH1
- LOW END
020.0% 1000.0 ft/s
OUTPUT CONFIG
·4-20mA CH1
HIGH END
050.0% 12994.9gal/m
selection of the ‘GVF’, ‘SOS’, ‘Flow Rate’, or ‘Blank’ for no display as
the output parameter.
The ‘Power Sel’ selection is used to specify whether ‘Internal’ power
or ‘External’ power is used to drive the 4-20mA current output.
The ‘Low End’ and ‘High End’ menu selections allow the user to
change the upper and lower values that are output on the 4-20mA
channel. For SOS reporting this is based on 5,000 ft/sec as the
maximum output value. For GVF (entrained air reporting this is based
an 100% as the upper limit. For Flow Rate, this is based on the
percentage of the total flow range of the meter.
The following figure gives an example screen shot of a user specified
‘Low End’ setting for 4-20mA CH1. The user settable percentage is
located on the left side of the bottom line of the display, with the
corresponding sound speed value shown on the right. The
percentage represents a point within the output range of the meter.
This is represented by 0%=0 ft/s and 100%=5000 ft/s. As the
percentage is changed between 0 -100%, the corresponding sound
speed value is indicated.
Figure 60 Low End Output Configuration Example Screen
The following figure gives 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. This is represented by 0%=0 gpm and
100%=25989.7 gpm for this particular meter. As the percentage is
changed between 0-100%, the corresponding flow value is indicated
in the currently selected flow units.
Figure 61 High End Output Configuration Example Screen