Functions of the ALMEMO 809
the whole fixed measuring period or over the specified cycle. These average
values can then be output and saved on a cyclic basis to function channels
provided for this purpose.
Conversion rate
The conversion rates available for V5 / V6 sensors are 2.5 / 10 / 50 / 100
MOPS (measuring operations per second). Recording can be accelerated if all
measured values are stored to memory and / or output via the interface at the
conversion rate. Among D7 sensors there are especially fast models with a
scan time of just 1 millisecond, which permits a sampling rate of 1000 MOPS.
Measured value memory
To save measured values there are two alternative methods. The ALMEMO
®
809 incorporates a non-volatile 8-MB flash memory sufficient for up to 1.5 milli-
on measured values . This memory can be organized and configured in either
linear or ring form. Output is via the interface. Selection can be specified accor-
ding to date or number.
Or alternatively an external memory connector fitted with a memory card can
simply be connected at socket A2. This solution, depending on the size of the
card, offers a virtually limitless memory capacity. 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 number single scans or entire series of measuring operations
can be identified and selectively read out from memory.
Control outputs
Via the keypad and interface up to ten output relays and up to four analog out-
puts can be individually addressed.
Output
All data logs, all saved measured values, and all programming parameters can
be output to any peripheral equipment. RS232, RS422, USB, and Ethernet in-
terfaces are available via the appropriate interface cables. Wireless communi-
cation is also possible via Bluetooth. To accommodate the variable data quanti-
ties provided by D7 sensors the interface protocol has been changed so that
data is now output in table format only; this can then if so required be proces-
sed directly using any standard spreadsheet program.
Networking
All ALMEMO
®
devices can be individually addressed and can be networked to-
gether by simply linking them up via network cable. However, old V5 / V6 de-
vices and the new V7 devices use different protocols and must therefore be
operated via different COM ports.
Software
Each ALMEMO
®
Manual is accompanied by the ALMEMO
®
Control software
package, which can be used to configure the measuring instrument, to pro-
ALMEMO
®
809
13
