Casella CEL Sensus data logger unit - Manual (Page 17)

For data type channels, this is the channel number of another data
channel whose data values will be further processed by this channel. The
allowable range is 1 to the maximum number of data channels.
For parameter type channels, this is the number of the parameter
whose value is to be further processed by the channel. The allowable range
is 1 to 100.
3.2.2 Single-ended or Differential
This option applies only to analog type channels and determines whether the
associated analog channel will be read as a single-ended voltage input or as a
differential input. It should be set to match how the sensor is connected.
3.2.3 Gain Setting
Again only for analog type channels, it sets the gain to be applied to the input
analog signal before the logger converts it. The allowable options are shown
below.
Analog Gain Option Action
x1 Leave analog signal untouched,
full scale ±2.5 V.
x10 Multiply analog signal by a factor
of 10, full scale ±250 mV.
x100 Multiply analog signal by a factor
of 100, full scale ±25 mV.
3.2.4 Report Count or Frequency
This applies only to counter type channels and determines whether the
channel result will represent the pulse count for the measurement period or
the equivalent frequency value.
3.2.5 Counter Reset Mode
Again only for counter type channels, it sets when the count value is to be
reset. The allowable options are shown below.
Counter Reset Option Action
Reset on scan Reset the counter every time it is read in
the scan event.
Reset on log Reset the counter every time the log
event occurs.
Reset at midnight Reset the counter only at midnight
(for daily accumulated values).
3.2.6 Select Instrument Type
This option is only for instrument type channels and specifies the type of
instrument attached to the logger. It configures how the logger will talk to
the instrument and which data values it is to extract.
3.2.7 Set Data Value
Purely for passive type data channels which do not actively gather data from
other sources but merely presents data for other channels to read. This
option allows the data value held to be updated.
Commands SENSUS Digital Data Logger -
Users Handbook
Page 17 of 44