Adjusting The Measuring Cell With Air - Mettler Toledo Densito 30PX Bedienungsanleitung

7.3

Adjusting the measuring cell with air

The Densito 30PX measures with the specified accuracy if the measuring cell is
correctly adjusted with the accompanying density standard or distilled water.
Additional adjustment with air is generally not necessary, but is recommended
when:
• the measuring cell is replaced,
• the displayed density of air is < 0.0007 g/cm
Setting in the menu
Calib. Mode:
Preparing the measuring cell
- Clean the measuring cell with a suitable solvent and rinse with ethanol.
- Hold the sample tube over a waste container.
- Connect a tube from the connection of the external syringe to an air pump
(volume flow 1...2 l/min) connected to dry tube filled with 5...10 g silica gel.
- Dry measuring cell for approx. 5...10 min.
- Wait approx. 30 min. until the measuring cell has reached the ambient
temperature.
Adjusting
- Press the and
CALIB (Air)
cell automatically.
Adjustment is complete when
- Adjust measuring cell with water or a density standard of your choice.
METTLER TOLEDO Densito 30PX
Off.
keys simultaneously.
appears in the display. The instrument adjusts the measuring
CALIB (Air)
Adjustment (cal)
3 or > 0.0015 g/cm
disappears (after approx. 2 min.).
3 .
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