
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048
Page 220
The Sample Duration Time must be set to a value greater than or equal to
T
Once
in order for the ZENO
®
-3200 to collect data from each Sensor Record
at least once.
If your Sample Duration Time is much greater than T
Once
and the Maximum Sensor Readings, Line
Item #11 in the Sensor Menu, of at least one Sensor Record is not set to one, the ZENO
®
-3200 will
take multiple measurements. Use the following equations to calculate the time required by the
ZENO
®
-3200 to make multiple measurements of each individual Sensor Record.
1. Determine how many times (N
i
, a whole number) the ZENO
®
-3200 will collect data from Sensor
Record #i during a Sample Duration. T
SD
is the Sample Duration Time, S
i
is the Sensor Timing
Loop time for the Sensor Record and R
MAX
is the Maximum Sensor Readings (Line Item #11 in
the Sensor Menu).
If R
MAX
is greater than zero, calculate both the top and bottom equations to make sure that the
minimum value is used.
2. T
i
, the time required by the ZENO
®
-3200 to make all the measurements for Sensor Record #i is
calculated by the next equation.
3. Assuming that the Sensor Timing Loops are set so that all Sensor Records are read properly, the
total time required to read ALL Sensor Records (T
Total
) is the same as the Sensor Record that
requires the longest time. (These times were calculated in Step #2.)
12.1.8. Multiple Sensors Sharing The Same Resource and Timing
When multiple sensors are configured that share a common resource, the
ZENO
®
-3200 can only take data from these sensors one at a time.
0,1
0,;
min
MAXMAX
MAX
i
SD
i
RR
Rdownrounded
S
T
N
iii
tNT
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