Xylem SI Analytics TITRATOR TitroLine 7500 KF, Operating Instructions Manual

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7 Connection of Analytical Balances and Printers
7.1 Connection of Analytical Balances
As it often happens that the sample is weighed in on an analytical balance, it makes sense to connect this
balance to the TitroLine® 7500 KF trace. To connect the balance to the TitroLine® 7500 KF trace, the balance
must have a RS-232-C-interface and the connection cable must be configured accordingly. For the following
types of balances there are already assembled connection cables:
7.1.1 Balance TZ-Number
Sartorius (all types), Denver Instruments partially Kern, TZ 3092
Mettler, AB-S, AG, PG TZ 3099
Precisa XT-Series TZ 3183
Kern and Denver Summit with 9-pole RS232 TZ 3097
For all other types of balances it is possible to obtain an already assembled connection cable (on demand). For
this we need detailed information about the RS-232-C-interface of the balance used.
The connection cable is to be connected to the RS-232-C-interface 2 of the TitroLine® 7500 KF trace. This side
of the connection cables always consists of a 4-pole mini-plug. The other side of the cable can, depending on the
type of balance, be a 25-pole plug (Sartorius), a 9-pole plug (Mettler AB-S) or a 15-pole specialised plug (Mettler
AT) etc.
In order to allow the balance data to be sent to the TitroLine
®
TitroLine® 7500 KF trace, the data transmission
parameters of the titrator and the balance must correspond to each other. Additionally, it is necessary to carry out
some more standard settings on the side of the balances:

The balance is to send the balance data via RS-232-C only by means of a print command.

The balance is to send the balance data only after the display standstill.

The balance should never be set to ‘automatic sending’ and/or ‘send continuously’.

‘Handshake’ on the balance must be set to ‘off’, or even ‘Software Handshake’ or ‘Pause’.

No special characters such as S or St are allowed to be used as prefix in the balance data of the balance
data string. In such a case it might be possible that the TitroLine® 7500 KF trace cannot process the balance
data correctly.
After you have connected the balance with the appropriate cable to the TitroLine® 7500 KF trace and have
adjusted all settings in the balance software, and possibly in the TitroLine® 7500 KF trace, you can now test the
data transfer of the balance very easily. Start the method. After conditioning, press Enter to start the sample
titration. Confirm the sample ID. Then, the display asks you:
a) To press the print-button at the balance

Parameters to ‘weighted sample automatically’
b) To enter the weighted sample

then the parameters are still set to ‘weighted sample manually’
Put an object onto the balance and press the print button. After the standstill of the balance display there will be
beep at the TitroLine® 7500 KF trace and the transmitted balance data appear:
a) After approx. 5 sec. in the display and the display changes automatically into the measuring display.
b) The weighted sample must again be confirmed with <Enter> or <F1>.