Memory for Momentary Values
The measured value can be frozen by the push of a button (hold function).
Maximum and Minimum Value
Each measurement involves an acquisition and storing of the maximum and
minimum value. These values can be displayed, printed or cleared.
Average Value of a Channel
A manual averaging over a particular period or over single measurements is
available for the selected channel.
Volume Flow Measurement
Apart from the averaging functions all flow sensors also provide functions for
the input of the cross-sectional area or diameter of ventilating ducts and for
calculating the volume flow. The average flow velocity can be roughly
determined by proceeding uniformly over the whole cross-sectional area or by
exact net measurements according to DIN. Both, a temperature and
atmospheric pressure compensation are available for dynamic pressure
probes. In case of corresponding environmental conditions the values can be
manually entered or automatically measured.
PROCESS FLOW PROGRAMMING
A cyclic measuring point scan with a time-based process flow control is
required to digitally register measuring data of all connected sensors. For this
purpose, a real time clock, the print cycle and the measuring cycle are available
and, if fast processing is required, the conversion rate is available. The
measurement can be started and stopped by using the keyboard, the interface,
an external trigger signal, the real time clock or an exceeding of limit values.
Time and Date
The real time clock with date function or the pure measuring time is used for
the recording of any measurement.
Print Cycle
The print cycle is programmable between 1s and 59h/59min/59s. It provides a
cyclic storing and output of measured values to the interfaces as well as a
cyclic averaging.
Print Cycle Factor
If necessary, the print cycle factor allows for limiting the data output of particular
channels so that an excessive data flow can be limited.
Average Value over Measuring Point Scans
The measured values that result from scanning the measuring junctions can be
averaged as desired either over the total measuring time or over the print cycle
time. Function channels are provided for a cyclic output of average values.
ALMEMO
2290-4 7
Functions
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