Operating instructions

METTLER TOLEDO DE40/50/51 Density Meter 13
The instrument
Rear view
17. Pump in connector
(only with ASU-DE)
13. Measuring cell out
14. Measuring cell in
15. Drain hole
16. Dry air out
18. Sample
changer connector
19. Waste bottle tube
connection (only with
ASU-DE)
20. Pump exhaust (only
with ASU-DE)
21. Printer
connector
22. RS-232C
connector
23. Power switch
24. AC power connector
25. I/O connector
26. Ext. cell or AD-510
13. Measuring cell out
Measuring cell ouput connector. Connect the drain tube here (9).
14. Measuring cell in
Measuring cell input connector. Connect the sampling tube here (ASU-DE) or a syringe (no ASU-DE).
15. Drain hole
To drain sample or rinsing solutions in case of leakage.
16. Dry air out
To dry the measuring cell connect the sampling tube (11) to this connector which is attached the desiccator (1).
17. Pump in connector (ASU-DE)
Connect the drain tube here (ASU-DE).
18. Connector for sample changer
connection of the SC24, SC24H, SC24L, CHG-260B sample changer, or the DCU-300B auto rinsing unit.
19. Waste bottle tube connection (ASU-DE)
Connect these tubes to the waste bottle lid (black tube to the higher connector: air suction; white tube to the
main lid: sample in).
20. Pump Exhaust
The exhaust air from the waste bottle goes out here.
21. Printer connector
This is for connection to an external printer(GA42 printer).
22. RS-232C connector
This is for connection to a personal computer or to our RE40 and RE50 refractometers.
23. Power switch
The power of DE40/50/51 is turned on or off by this switch.
24. AC power connector
Connect the power cable to the power supply. The instrument will automatically adjust its power supply unit
to the specific line voltage of your country as long as this is in the range between 100 and 240 V AC.
25. I/O connector
For connection of the SOP40 or SOP50.
26. Ext. cell
Connector for an external cell (option) or for the automatic drain unit AD-510 (option).