Ahlborn ALMEMO 710 Operating Instructions Manual page 14

Data logger
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5. Introduction
Date and time-of-day
Each measuring operation can be accurately logged using the real-time clock
in terms either of date and time-of-day or purely by actual measuring duration.
For the purposes of starting / stopping a measuring operation, the start / stop
date and time-of-day can be programmed.
Output cycle
The output cycle can be programmed to any value between 1 second and 59
hours, 59 minutes, 59 seconds. This function permits cyclic output of mea-
sured values to the interfaces or to the memory and provides cyclic calculation
of the average value.
Cycle factor
The cycle factor can be used to restrict data output from particular channels;
this may prove necessary in order to reduce excessive data flow especially
while measured data is being saved.
Averaging over measuring channel scans
The measured values from measuring channel scans can be averaged either
over the whole fixed measuring period or over the specified cycle. These aver-
age values can then be output and saved on a cyclic basis to function channels
provided for this purpose.
Conversion rate
All standard channels are scanned continuously at the conversion rate (2.5 / 10
/ 50 / 100 measuring operations per second).
Scan cycle
With the ALMEMO
®
710 there is also the superordinate scan cycle, which ac-
quires all standard and D7 channels whenever these deliver a new current
measured value. Recording can be accelerated if measured values thus ac-
quired are stored to memory and / or output via the interface immediately.
Measured value memory
All measured values can be saved to a flash memory either manually or auto-
matically per cycle or scan cycle. Memory capacity is 8 MB, sufficient for be-
tween 400,000 and over 1.5 million measured values. This memory can be or-
ganized and configured in either linear or ring form. All measuring operations
found to have a modified sensor configuration are assigned a new numeric file
name. Each measuring operation can also have a comments text attached;
this can be up to 64 characters in length. Output is via the interface. Selection
can be made according to file name, number, or date.
Memory capacity can be increased substantially by using an external memory
connector with a micro SD memory card. With an external memory connector
(available as an accessory) files can be read out very quickly via any standard
card reader.
Numbering of measuring operations
By entering a 6-digit number single scans or entire series of measuring opera-
tions can be identified and selectively read out from memory.
Control inputs and outputs
14
ALMEMO
®
710

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