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4.2.
Diagnosis
719 S Titrino
107
4.2.3 Equipment required:
−
voltage calibrator,
e.g. 1.773.0010 Metrohm pH Simulator
or 1.767.0010 Calibrated Reference for mV, pH,
Ω
µ
S, °C
−
highly insulated interconnection cable
6.2108.060
−
cable 3.496.5070
−
exchange units, if possible with different cylinder volumes (or 3.496.0070 dummy exchange unit)
−
stop watch or watch with second hand
−
digital or analogue voltmeter (if need be, connect a calibrated recorder)
−
2 connecting cables with 4 mm banana plugs
−
test plug 3.496.8510 (necessary only if plug ‘Remote’ should be checked)
−
test plug 3.496.8480 (necessary only if plug ‘RS 232’ should be checked)
4.2.4 Diagnosis steps
1
Prepare instruments for diagnostic test
•
Power off.
•
Disconnect all external connections (cables at rear, except mains cable and key-
board).
•
Remove exchange unit.
•
Power on and immediately press and hold the
<9>
key until the power up test pat-
tern disappears.
diagnose press key 0...9
2
Perform display test
•
Press
<2>
.
display test
•
Press
<Enter>
.
Characters for a visual check of the display are generated on the eight lines.
Test sequence:
a) The display is cleared and overwritten from the left to the right with a dot pattern (
▓
▓
▓
▓
▓
▓
▓
▓
).
b) The display is cleared and both lines are written into with the letters A, B, C,…Z.
c) The complete character set is shown as a moving display. At the same time with mov-
ing display the LED’s „STATISTICS“ and „SILO“ are swtiches on and off.
•
The test sequence can be held and then continued at any time by pressing
<5>
.
•
Block 2 is quit by pressing
<Clear>
.
diagnose press key 0...9
Содержание Titrino 719 S
Страница 2: ......
Страница 6: ...1 2 Controls and parts 719 S Titrino 2 1 2 Controls and parts Front view of instrument...
Страница 8: ...1 2 Controls and parts 719 S Titrino 4 Rear view of instrument...
Страница 58: ......
Страница 106: ......
Страница 135: ...6 2 Pin assignment of the Remote socket 719 S Titrino 131 6 2 1 Lines of the Remote socket during the titration...