Clean The Density Meter; Clean The Housing; Clean The Measuring Cell; Clean Using The Sample Pump - Mettler Toledo Densito Manual De Usuario

6.2 Clean the density meter

NOTICE
Danger of damage to the density meter due to inappropriate cleaning methods!
Inappropriate cleaning agents can damage the housing or other parts of the density meter. If
liquids enter the housing they can damage the density meter.
1 Make sure the cleaning agent is compatible with the material of the part you want to clean.
2 Make sure that no liquid enters the interior of the density meter.
If you have questions about the compatibility of cleaning agents, contact your authorized METTLER TOLEDO
dealer or service representative.

6.2.1 Clean the housing

METTLER TOLEDO recommends the following cleaning agents:
Water
•
Water with a mild detergent
•
Procedure
§
The density meter is shut down.
− Wipe the housing with a cloth moistened with the cleaning agent.

6.2.2 Clean the measuring cell

Because the measuring cell always contains residue from the last sample, there is a risk that the measuring cell
can be damaged by the sample. To prevent such damages, METTLER TOLEDO recommends that you clean the
measuring cell at the end of each sample series.
To clean the measuring cell, you need to rinse the measuring cell with a cleaning solution. The cleaning solution
must have the following properties.
Does not chemically interact with the material of the measuring cell.
•
Dissolves the sample that was just measured.
•
Evaporates without leaving incrustations.
•
METTLER TOLEDO recommends the following cleaning agents:
Sample
Water
Water based
Acids, concentrated
Alkaline, concentrated
Samples with fats or oily compoents
Petrochemical samples
Edible oils and fats

6.2.2.1 Clean using the sample pump

§
The density meter is set up to work with the sample pump.
§
The cleaning solution is defined and available.
§
The piston is in the lowermost position.
1 Immerse the filling tube in the cleaning solution (1).
Handheld Density Meter
Cleaning solution
Deionized water
Water (flush the measuring cell with plenty of water to remove the
heat from the reaction of water and acid)
0.3...0.5 % deconex solution
0.3...0.5 % deconex solution
Toluene, xylene or petrol ether mixtures
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