User manual

OPERATION MANUAL
Technical changes reserved
0141 0316-155 20.04.2016
Temperature measurement system TLOG20
connections RS232, RS485, USB
WINDOWS-Software RECORDER
With the help of this program the measured values can be re-
ceived through the interfaces and recorded on the PC. The
recorded data is compatible with any desired spread sheet
program, with which it is possible to further process the mea-
sured values for statistical evaluation and interpretation.
Installation: The program should be rst installed under Windows 98,
Windows NT, Windows 2000, Windows XP, Windows Vista or Windows
7 system. Place the attached CD in your drive and run the program
“setup.exe” either by selecting “Run“ from the START menu or through
the windows explorer. Then follow the instructions of the installation
program. The setup program creates a new program group “HYG-
ROSENS INSTRUMENTS” in the folder “programs”. After successful
installation, the software can be accessed and executed through the
START menu.
First time operation: Connect the temperature logger to a free serial
port on the PC. If the software runs for the rst time in the menu op-
tion “settings” , select device type as “20Ch. Thermometer Templog
4800Bd” and also the serial interface used ( for example, COM1) under
“interface”. The remaining settings (Data rate, Parity, Start and Stop
bit) are automatically selected and need not be changed. In case the
connection hangs, refer to data communication in the terminal window.
Then select “OK” the current settings will be stored.
Please note that still micro controller adapter has to be congured as
per the connected sensors, before displaying the measurement values.
Data communication: The maximum allowable distance (between PC
and interface converters) depends on the model of the interface ad-
apter.
USB-Interface: For USB-Interface the max. allowable length is restric-
ted: As per standard, only 5 m are allowed. Due to high frequently
signals, this value should not be exceeded with the use of passive
connection cables. Only special USB cables may be used. For further
routes, special repeater-cables are available, which extend the allo-
wable radius by 15 m in each case. Max. 5 such repeaters can be
cascaded. (No extend of delivery)
RS232-version: As per standard, the allowable cable length is 15 m. In
actual practice much longer routes, for example up to several 100 m,
can also be realised with low baud rates.
RS485-version: For very large distances between PC and sensor con-
nection adapter, the RS485-version can be used. With this the connec-
tion length up to 1200 m can be realised. On the PC side a RS485-
interface adapter is required.
If you are not able to make any data communication between PC and
the measuring device or the measuring adapter, then rst please check
the power supply and also cable connection to the PC.
Data recording: First activate all the measurement channels for recor-
ding by checking the channels. In ‘Text 1’, ‘Text 2’ and ‚Text 3‘, you can
enter a description as header of the data le. The selected separator
appears between the individual data elements. Enter the recording in-
terval in seconds in the Field “Every”. The data is recorded in the le
which is entered as path in the ‘Settings’ button. The recording begins
by pushing the ‘Start’ button.
EXCEL™: If you want to use EXCEL for evaluation, then operate the
control button EXCEL before start of recording, so that suitable decimal
separation characters and eld separators are inserted. The created
le is compatible with CSV-Format. In order to display the measured
data, you can use graphic tools, for example, the diagramassistant in
EXCEL™. However, other software can also be used to evaluate the
measured data.
Connection of Sensors
The Dallas temperature sensors of type 1820 has an internal coding
(serial-number) and can be operated along with several other sensors
on a three wire bus. The sensors are calibrated by the manufacturer.
For short connection lengths, there are no special requirements in re-
spect of the connecting cable to be used. It is also recommended to
connect a ceramic capacitor of 100 nF from pin +5 V to pin GND at
each sensor.
The lead length with unshielded cables can go up to 60 m. To increase the
approach length, an additional Pullup-resistor of 1.5k to 10 k-Ω (from Pin
“DALLAS” to pin “+5 V”) can be added. With this, it is possible to increa-
se the cable length up to 150 m or more, but with slightly lower accuracy
of measurement due to the increased temperature rise of the sensors.
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
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