Time Average (Avg); Gated Timer; Totalize - Omega RD8800 User Manual

Chapter 5 Programming

5.6.12.6 Time Average (avg)

A Calculated Time average point calculates the continuous average of the measured or processed value of
a selected point. The result is the weighted average of the present reading and the previous average value.
Therefore, this type of point can be used to smooth out noisy or erratic signals and to attenuate the effects
of sudden transitions.
Programming Parameters - Once a point has been programmed as a Calculated-Time average Point
Type, the user is presented with the following parameters:
Point tag
Decimal fix
Basepoint
Eng units
Reset contrl
Alarms
Chart scale

5.6.12.7 Gated timer

The Gated timer Calculated point type allows a timer (measuring in seconds) to be controlled by a 'gate'
from a logic point. For example, if a point is measuring temperature and you wanted to know the total
amount of time the temperature measured by this point is above or below a certain level, a Conditional point
can be programmed to be TRUE only when the temperature is above or below a set level. A Gated timer
point can then be programmed to be turned ON only when the Conditional point is in the TRUE state. The
Gated timer point will then only be timing when the temperature is above or below a set level. The timer will
continue to accumulate time (in seconds) each time it is turned on. The Gated timer point can be reset at
programmable time intervals and alarms can be set to alarm if the timer total goes above a programmed
time interval in seconds.
Programming Parameters - Once a point has been programmed as a Calculated-Gated timer Point
Type, the user is presented with the following parameters:
Point tag
Gate control
Eng units
Reset contrl
Alarms
Chart scale

5.6.12.8 Totalize

The Totalize calculation keeps a running total of the value of a point sampled at a programmed rate. This
will continue until the programmed reset interval time is reached at which time the value is logged on the
Alarm/Event log window (if Reset print is enabled), is reset to zero, and the totalization calculation begins
again. However, a Low flow cutoff provision prevents totalization on flowrates that meet or fall below the
cutoff point. The data will also be recorded to disk if Alarm/Event logging is enabled. The Totals are
non-volatile for channels A through C unless the Auto reset option is active.
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Section 5.6.5.1
Section 5.6.5.5
Section 5.6.5.14
Section 5.6.5.9
Section 5.6.5.15
Section 5.6.5.10
Section 5.6.5.11
Section 5.6.5.1
Section 5.6.5.17
Section 5.6.5.9
Section 5.6.5.15
Section 5.6.5.10
Section 5.6.5.11
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