MWS_55_e.indb Page 12
Manual MWS 55 / MWS 88 / MWS 10 and Sensors 55
geändert am 26.10.2017 von DO
REINHARDT
System- und Messelectronic GmbH
Fax: 08196/7005 and 1414 email:
http://www.reinhardt-wetterstationen.de
3 Technical details
3.1 The data logger
The data logger of the MWS 55 has got an internal SD-Card with 8GB.
When storing data with an interval of 10 seconds the device stores 267840 data sets a month (31
days). With 15 active sensors (clock and date also counts as a sensor) the monthly data file has
a size of app. 31.5 MB.
So there are app. 375MB of data a year which allows storing of data for more than 20 years wit-
hout the need of deleting any data.
The data files are stored on the SD-card in the folder "/log/data".
Each month a new data file is being created which contains the month and the year in it's name.
The file suffix is "mws".
The name of the data file of march 2015 therefore is 03_2015.mws.
The data file are ASCII files (text files).
The SD-card contains other files important for operating the weather station. These files must
not be deleted or edited.
3.2 In case of power failure
The datalogger of MWS 55 is kept up in case of power failure (EEPROMS), but no new data are
stored.
The MWS 10 keeps running up to 4 hours after power loss if the internal accu block was fully
charged.
In case of power failure, the clock of MWS 55 is kept running and doesn't need to be set when
power is applied again!
Due to power failure there are data missing in the data files (time gaps). These gaps are filled
with dummy values (-99999) by the weather32 software when reading the logger.
So missing data are indicated by measure values of -99999 in the datafile. The software then re-
cognizes in the values of -99999 that data are missing and creates a gap in the graphical displays.
3.2.1 The internal clock (CAUTION!!)
The MWS 55 has a batterie powered clock eliminating the need to use a computer or GPS-receiver
to start a measurement with data logging.
Please note that the batterie discharges when the MWS 55 is not used. When storing the MWS
55 without power supply for app. 9 months the batterie (Lithium cell CD3032) is empty and must
be replaced!
To perform this the housing of the MWS 55 has to be opened.
3.3 Maintenance
Because of its elaborated sensors, MWS 55 needs no maintenance.
There are wear parts like the ball bearings and the fan which have to be replaced from time to time.
These parts have got a life time of app. 5-6 years under normal environment conditions.
Extreme conditions (operation directly at the sea, high mountin regions, extreme pollution, i.e.)
may cause very reduced life time of these parts.
MWS 55 weather station has been developed for stationary use under normal climatic conditions
(temperate zone). Use under extreme conditions such as e.g. on board of a ship, mobile use on a
measuring vehicle etc. has not been tested. It is therefore not recommended to set up the weather
station where it is exposed to salt or salt water ( e.g. right at the coast etc.).
It can be used on a measuring car under certain conditions although the measured values of the
wind sensors cannot be reproduced.
Our warranty ends if there is any intervention into hardware or software from your side.