Thies CLIMA DLx-MET, Instructions For Use Manual

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the voltage is measured every 5 minutes; when it is higher than 11,0 V the normal measuring
routine is continued.
An integrated lithium battery buffers the contents of the data memory and the clock operation when
no other power supply is available. This means that the saved values and the time are not lost even
when there is no additional power supply.
The housing can be locked, is impermeable to jet-water (IP65), and is a very stable construction.
For shielding against electromagnetic fields the housing is made of stainless steel. In addition,
operation is guaranteed for temperatures ranging from – 30 °C to 60 °C.
The instrument can be easily operated either by means of three keys, via serial interface COM1 or
via USB. The three keys are referred to in the following as"<
∆
>", "<
∇
>"ON, and "<ENTER>" (see
Figure 5
). A three-line, alphanumeric liquid crystal display (LCD) serves as indicating instrument.
ENTER
ON
DATALOGGER DLx MET
Figure 5: Front view
The scanning of the measuring values is selectable in the range from 1 second to 60 minutes. For
each of the 10 internal sensors the scanning, and further processing can be switched on or off
separately. The optional sensors connected to the Sensor-Interface are processed if the datalogger
receives a telegram over the serial interface COM2 (apply only for 9.1756.x0.
1
00).
The measuring values are stored in a memory (CMOS-RAM) with a storing rate of 1 to 60 minutes
for mean values and 1 minute to 6 hours for extreme values. The memories are organized as so-
called ring memory with a capacity of 1.4MB (mean) and 0.5MB (extreme) . If the capacity of the
ring memory is exhausted, the next step is to overwrite the oldest record. The reading-out of the
data can be carried out via the serial interface COM1, USB or via a Secure Digital Memory Card
(SD Card, see chap.
5.2
for working types).
There is a so-called switch output available for the supply of an optional GSM-modem; by means of
this contact output the modem can be supplied at up to 6 selectable times a day.
It is possible to synchronize the internal time automatically by means of a separately connectable
DCF77-receiver module (reception range up to 2000km around Frankfurt(Main)/Germany).
For checking the sensors or the measuring inputs the datalogger can be turned into the
maintenance-mode. While this mode is active the measuring values of all the sensors cannot get
into the memory. I.e. values detected during the maintenance-mode are displayed, however, are
not taken into consideration for the calculation of mean- or extreme values.
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