Keyboard Port; In/Outputs, Input/Output Socket; Maintenance And Care Of The Titronic - SCHOTT TITRONIC 110 plus Manual De Instrucciones

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5.4

Keyboard port

The keyboard port (ref. to Fig. 15, item 6) is used to connect the TZ 2835 PC keyboard or a PC multi-
functional keyboard. The port is capable of handling PC AT data formats. When using a third manufac-
turer's keyboard, please make sure that the keyboard is working in the "AT format" (please refer to chap-
ter 4.5, "Parameterisation of the TITRONIC
5.5

In/Outputs, input/output socket

The back panel of the TITRONIC
and output (please refer to Fig. 15, item 3). This I/O port is controlled either by the internal program of the
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TITRONIC 110 plus Piston Burette, or by computer commands. Among other things, it is used to connect
the TR 160 Manual Titration Controller.
The multi-functional I/O consists of 8 inputs and 1 output:
Input:
Output:
Free:
Ground:
The inputs correspond to TTL signal and are circuited over a pull-up resistor (10 kΩ) to +5 V.
The outputs correspond to those of an open-collector component (LS 05). Therefore, the matching pin of
a connected device has to be circuited via a 1 ... 10 kΩ resistor to the supply voltage of the connected
device.

Maintenance and care of the TITRONIC

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The preservation of the proper functioning of the piston burette requires certain inspection and
maintenance work.
Maintenance intervals
Normal operation:
- In a larger sense, the valve and the glass cylinder are parts which are subject to wear and tear; this
means, that the glass surface may be damaged by the use of chemicals. This wear and tear may lead to
inaccurately dosed volumes. For this reason, the dosing accuracy of the device is to be verified.
- As a rule, the max. intervals for carrying out all maintenance work is 6 months.
Under particular strain:
- Once per quarter, the glass cylinder has to be inspected visually in order to check for damages, and in
addition a test according to DIN EN ISO 8655, Part 3, has to be carried out. These inspections are
particularly necessary if solutions were used which are likely to attack glass, e. g. alkaline, fluoride, or
phosphatic solutions.
- If there is any suspicion that a solution is attacking the glass excessively, the maintenance intervals are
to
be reduced accordingly.
- Once per quarter the electrical contacts have to be checked for corrosion if the piston burette is used in
rooms the atmosphere of which occasionally contains corrosive matters.
In case of disturbances:
- The above work has to be carried out immediately if a disturbance, an error, or another defect becomes
obvious.
Connections and data transfer
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110 plus Piston Burette using a keyboard").
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110 plus Piston Burette features a 16-channel socket serving as in-
Pins no. 1; 2; 3; 4; 5; 6; 7; 8
Pin no. 9
Pins no. 10; 11; 12; 13
Pins no. 14; 15
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110 plus Piston Burette