Accsense VersaLog Data Loggers User’s Manual Page 55
Time to Start & Time to End
These two fields specify the desired time the logger will start logging data and the time to
stop logging data.
Making changes to the Time to Start/End will affect Total Time Span fields mentioned later.
If you have selected the Continue logging field, when the memory is full, both start time and
end time will move forward accordingly.
Total Time Span
These fields are an alternate way to specify the total logging time from the start time you
specified above.
Changes made on these fields will affect Time to End field.
Channel Settings:
Enabled
Check this field to enable this channel for logging.
Channel Range
This field specifies the measurement range the channel will use. Different channel types have
different input range selections. Please refer to Channels and Sensor Connections chapter
for details.
Description
This field specifies the name or the description of the channel (maximum of 30 characters).
Equation
This field specifies the equation used for the channel. Different channel ranges have different
default equations. Please refer to Channels and Sensor Connections chapter for details.
In order to convert a process signal to a correct measurement value an equation must be
applied to the channel.
For example, if you want to use the 0 – 5 VDC channel to record a battery voltage output,
the logger will first convert the battery voltage values to digital values and save them in the
memory. Later when all data are downloaded to a computer, Accsense VersaLog will use
equation “VoltageDC” to convert the digital values back to voltage values.
If you are recording the voltage output of a transducer or transmitter and the range of the
voltage refers to another measurement unit, you will need to create your own equation for
this conversion. For instance, if your CO2 transducer outputs 0 – 5VDC representing 0 –
5000PPM of CO2, the custom equation you need to create looks like this:
public double CO2Equation(double Input)
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