Xylem System 5000 User Manual - Manual (Page 39)

Inputs
37
Frequency
The Digital ports may also be used
for normal frequency (non-low level)
measurements and support frequencies
up to 16KHz. Frequency readings typically
take a few seconds to accurately
measure the incoming signal.
Event Counter
The Event Counter mode is normally
used with rain gauge-type applications.
However, the counter can also be used
with any sensor that acts as a switch closure
or produces a 0 to 5 volt pulse. The Slope
(located under Math & Data Options) will
probably need to be adjusted based on
the application (0.01 is typical for rain
gauges, indicating 0.01 inches of rain). A
total count value is maintained until either
the System 5000
™
is reset or the Value
itself is manually reset through this screen.
Count
Defines which edge to count. Falling indicates a count will be added when the voltage drops
from 5 to 0; Rising counts when the voltage raises from 0 to 5.
Counter Options
Allows the counter to be set to a certain value or reset to zero.