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

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Adjustment (cal)
Measured deviation <0.001
- Press the or key.
Execute? ( ) appears.
Yes
- Press the ok/meas. key.
The adjustment is confirmed.
Measured deviation ≥ 0.001
- Check whether the measuring cell is dirty and if there are air bubbles.
Measuring cell is clean and contains no air bubbles:
- Press the or key.
Execute? ( ) appears.
Yes
- Press the ok/meas. key.
Measuring cell is dirty and/or contains air bubbles:
- Execute? ( ) is confirmed by pressing the ok/meas. button.
No
- Clean the cell and readjust if necessary.
7.3

Adjusting the measuring cell with air

The Densito 30P 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: Off.
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 tem-
perature.
Adjusting
- Press the and keys simultaneously.
appears in the display. The instrument adjusts the measuring
CALIB (Air)
cell automatically.
Adjustment is complete when
- Adjust measuring cell with water or a density standard of your choice.
18
manuals search engine
3 or > 0.0015 g/cm
disappears (after approx. 2 min.).
CALIB (Air)
METTLER TOLEDO Densito 30P
3 .