Owner's manual

ADS Environmental Services ADS Spider User Manual
Page 39
Switch (digital) inputs are logged automatically when their state
changes. A switch input must be stable (i.e., fully on or off) for a
minimum of 5 seconds for a new state to be recognized.
Event inputs automatically log every event (or pulse).
Analog and counter inputs allow you to set their measurement units,
whether to log the input data, and, if so, the minimum change
required for logging to occur. The minimum change for each input
works in conjunction with the “Scan period”, which is common to all
inputs and is also settable from this page.
Please refer to Appendix A: ADS Spider Inputs on page 83 for a
summary of input types and their capabilities.
In the previous example, “Tank Level” is measured in inches (“in”). It
is checked for changes every 30 minutes and logged if it changes by