RC Systems ViewSmart 1600+, Operation Manual

Page: 42 / 141

UM-1097
Revision B 32
Channel 8 Config
Alarm 2
Alarm 3
Fault Alarm
Data From
Linearize
Configure ~
~
~
~
~
~
Alarm 1 ~
Ch. 8 Configure
Engineering Units
Zero
Span
Decimal Points
Channel On?
Zone
Deadband (%)
Copy To Channel
Copy To Group
Restore Ch. Defaults PCTLEL
0
100
0
Yes
1
1
~
~
~
Info Measurement Name
Figure 26 Channel Configuration Menu
4.4.1 Info and Engineering Units
The first two items in this menu are for entering the 16 character Measurement Name and 6 character
engineering unit (Eunits) ASCII fields. Eunits should define the units of measure for what this channel is to
display. Measurement Name should describe the source of this data in the user’s terminology.
4.4.2 Zero/Span
The Zero/Span entries allow configuration of the measurement range displayed by this channel.
Measurement Range works along with A/D Counts menus to define the range of the input signal’s
engineering units. For example, if a channel’s input is 4-20mA from a transmitter monitoring 0 to 10ppm
chlorine, then the Zero value should equal 0.000 and the Span value equal 10.00. The six ASCII engineering
units previously entered are automatically displayed at the top of each menu as a reminder. Four digits
must appear in this entry so trailing 0’s may appear here that are not displayed on other data screens.
4.4.3 Decimal Points
Resolution of displayed channel values is configured in this menu by setting the number digits trailing the
decimal point. Values are limited to a maximum of four digits, and a polarity sign. An auto-ranging feature
displays the highest resolution allowed by this menu’s decimal point entry.
For example, if three decimal points are entered, and the range is 0 to 100ppm, the reading will be 0.000
at 0ppm and 100.0 at 100ppm. However, this may be undesirable due to the high resolution at zero unless
the sensor’s output is extremely stable. If decimal points are limited to one, the 0ppm reading becomes
0.0 and the 100ppm reading remains 100.0. Resolution may be limited further by setting decimal points
to 0. In the above example, this would cause 0ppm to display 0 and 100ppm to display 100.