Process Control - Ahlborn ALMEMO 5690-2M Operating Instructions Manual

Functions of the ALMEMO 5690-2M
correction are used as the background temperature and the emissivity factor.
Maximum and minimum values
Each measuring operation acquires and stores the maximum and minimum
values with date and time-of-day. These values can then be displayed, printed
out, or deleted from memory.
Average value
Measured values can be expressed as a sliding average obtained by continu-
ous automatic smoothing or manually averaged over a certain period or cycle
or over a series of individual measuring operations.

5.1.3 Process control

To record the measured values from all connected sensors in digital form mea-
suring point scanning is performed continuously with measured value output
according to a time-based process control. This may be per output cycle or, if
really rapid results are required, at the measuring rate itself. The measuring
operation can be started and stopped by means of the keyboard, the interface,
an external trigger signal, the real-time clock, or by a specified limit value be-
ing exceeded.
Date and time-of-day
All measuring operations can be accurately logged using the real-time clock
with date function or in terms of the pure measuring time. For the purposes of
starting / stopping a measuring operation, the start / stop date and time-of-day
can be programmed.
Cycle
The cycle can be programmed to any value between 00:00:01 (1 second) and
59:59:59 hh:mm:ss. This function permits cyclic output of measured values to
the interfaces or to the memory and provides cyclic calculation of the average
value.
Print cycle factor
The print cycle factor can be used to limit data output from particular channels;
this may be necessary in order to reduce excessive data flow especially while
data is being saved.
Averaging over measuring point scans
The measured values from measuring point scans can be averaged either
over the whole measuring duration or over the specified cycle. Function chan-
nels are available for the cyclic output and storage of these average values.
Measuring rate
®
On the ALMEMO 5690-2M all measuring points are scanned at the measur-
ing rate set (2.5, 10, 50, or 100 measuring operations per second). Recording
can be accelerated if all measured values are stored to memory and / or out -
put to the interface at the measuring rate.
Measured value memory
To save measured values there are two alternative methods.
Normally a SD card is used as storage medium. This solution offers a virtually
ALMEMO ® 5690-2M 15