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SBS-2500 Manual 09-15-TI2500
5.8 Background Lighting and LCD-Contract (LCD)
Backlighting
The backlighting is turned off automatically 5 seconds after the last time a key has been pressed (
Auto off
), or it
is always off (
Always off
).
Contrast
Display contrast is adjustable to one of 9 levels with the
keys.
5.9 Automatic Switch-off (Power)
Off
Automatic switch-off is off. The instrument must be switched off manually.
On
The instrument switches off automatically if not operated for 10 minutes.
5.10 Software Version (Version No.)
The software version is displayed.
5.11 Date & Time
The settings for date and time can be edited here. The date is displayed in the format year/month/day (e.g.
2003/03/04 for March 4, 2003). Both date and time are included in the data transfer to a printer or computer.
5.12 Identification
An identification consisting of 10 letters and numbers (instrument name, user, etc.) may be entered here. This
identification will be included in the data transfer to a printer or computer.
6. Measurement (meas)
6.1 Procedure for Proper Measurement
•
Test the instrument for accuracy with the accompanying density standard or distilled water before beginning
any measurements (See Chapter 4.3).
•
Ensure that the measuring cell is clean before each measurement. Insufficient cleaning leads to remaining
residue in the measuring cell and, therefore, incorrect results.
•
Check the sample for chemical resistance of the instrument materials.
Sample tube:
PTFE (polytetrafluorethylene)
Measuring cell:
Borosilicate glass
Measuring cell holder:
PPS (polyphenylene sulphide)
Sample pump:
PP (polypropylene)
Ensure that the samples to be measured:
•
Are liquid enough to be sucked up or injected;
•
Can be dissolved with a solvent suitable for cleaning the measuring cell;
•
Are homogeneous (no emulsions or suspended particles, no air bubbles);
•
Have reached ambient temperature in the measuring cell.
For samples which are 20°C colder than the ambient temperature, heat the sample before beginning the sampling
procedure.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176