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Manual

PC208W Datalogger Support Software

This concludes the user activities in Report with respect to the Summarized Daily Water Level information.

5.3.2.4 Hydro Station Performance Information

It is up to the user to decide whether or not to archive datalogger performance information of the various Hydro

Stations. Although this information can be used to, for example, analyze station power consumption in the past, there

seems to be little reason to keep this data if the station has proved to work satisfactorily during a previous recording

period.

It is for this reason that the Project has decided not to make any provisions (i.e. pre-defined tables and/or queries)

for storing station specific datalogger performance information in an MS Access database.

If the user considers it beneficial for the operation of his/her office to archive the concerned performance

indicators, he or she is invited to create an appropriate database for this purpose.

5.3.3 Met Station

5.3.3.1 General

The Automatic Meteorological Stations are equipped with 6 sensors for monitoring a selected set of climatological

parameters at a five minutes interval. At the same time the system periodically records two performance indicators:

battery voltage and program signature.

The METSTAT datalogger program transfers these measurements into four different information groups, i.e.:

hyetograph with a 5 minutes time step;•

summary meteorological information on an hourly basis, including average hourly values for air temperature, •

relative humidity, wind speed and direction, as well as cumulative one-hour solar radiation;

summary meteorological information on a daily basis, including average, maximum and minimum air •

temperature; average daily values for relative humidity, wind speed and direction; as well as cumulative one-

day rainfall and solar radiation;

station performance information on a daily basis as an indicator of the functioning of datalogger and power •

supply.

Due to the logger’s memory configuration, all four information products are written to the same storage area in the

system’s RAM in the order of their time of recording, and consequently retrieved as one single, rather unorganized

data file, through SM192, on PC. The role of the Report module is now to separate and reorganize the scattered

recordings into consistent individual data blocks per information product.

Report performs this task using so called parameter files. Each of the four information products is extracted from

the single data file using a pre-defined dedicated parameter file and stored into an individual output file on the hard

drive. At the same time the output data is presented on screen for a first visual quality check.

Table 3 presents the various files involved. XX stands for the data file’s serial number.

Input File

data0XX.dat

Parameter File

metrain.par

methour.par

metday.par

metperf.par

Function

to extract (5 minutes) hyetograph information from data file to

extract 1 hour summary information from data file

to extract 1 day summary information from data file

to extract station performance information from data ﬁle

Output File

metrnXX.

txtmethrXX.

txtmetdayXX.

txtmetprfXX.txt

Table 3: Various files and their function used by Report in the processing of Met Station recordings.

Each of the four above identified information products is dealt with more in detail in the next four sub

paragraphs.

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