Omega RD-MV100 Series User Manual page 238

11.7 TLOG Computation
About [Reset]
If Power is Lost while the TLOG Computation was in Progress
How the Measured/Computed Data are Handled when there is an Abnormality in the
Data
11-16
For example, if the scan interval is 2 s, and the input value is 100 m
summation would add 100 every 2 s resulting in 3000 after one minute. However, if the
computing unit is set to /min, then 2s/60s is multiplied every scan interval before the
value is added giving a result that is close to the actual input value. The scan interval
unit is in seconds.
∑(measured value)
OFF
∑(measured value) × scan interval
/S
∑(measured value) × scan interval/60
/MIN
/HOUR ∑(measured value) × scan interval/3600
For the setting procedure, see section 11.8.
Whether or not to reset the computed result at every timeout is selectable. The figure
below shows the action of TLOG.SUM computation.
Example : Result of the TLOG.SUM computation
Interval
Reset = On
Reset = Off
In case of TLOG.MAX computation, for example, the maximum value is derived for every
interval when "Reset" is "On," and the maximum value from the start of computation is
derived when "Reset" is "Off."
The TLOG computation is resumed when the power is restored. The operation varies
depending on whether power is restored before or after the scheduled time to create the
TLOG data.
Time of Recovery
After the time to create
the TLOG data
Before the time to create
the TLOG data
Type of Abnormal Data
Positive overflow
Negative overflow
Error
1
Reset Reset
TLOG Computation Operation
TLOG data are created immediately when power is
restored. The measured/computed data up to the time of the power
disruption are used. At the next scheduled TLOG computation time,
data will be used from the point in time after the power was
restored.
After power is restored, TLOG data are created at the normally
scheduled time to perform the TLOG computation. All measured/
computed data excluding the power disruption period are used.
Report Data
AVE MAX/MIN/P-P
not used used
not used used
not used not used
3
/min, a simple
2 3
Reset
SUM
not used
not used
not used