Adjusting The Measuring Cell With A Density Standard - Mettler Toledo Densito 30PX Bedienungsanleitung

Adjustment (cal)
Measured deviation < 0.001
- Press the or
Execute? (
- Press the ok/meas. key to confirm.
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
Execute? (
- Press the ok/meas. key.
Measuring cell is dirty and/or contains air bubbles:
- Execute? (
- Clean the cell if necessary and readjust.
7.2

Adjusting the measuring cell with a density standard

If a different density range is to be used, the measuring cell can be adjusted
using a density standard of your choice (e.g. toluene from the NIST, National
Institute of Standards and Technology) instead of distilled water.
Setting in the menu
- Calib. Mode:
- Enter the following density standard values into the menu:
Density Density of the density standard (g/cm
Temp Reference temperature
α 1000 Temperature-compensation coefficient of the density standard
x
Adjusting
- Ensure that the measuring cell and sample tube are clean.
- Fill the clean measuring cell with the density standard (e.g. Toluene) ensuring
that no bubbles are allowed to enter.
- Press and hold the up and down keys simultaneously until
appears in the display.
The instrument adjusts automatically (duration: approx. 1 minute). After adjust-
ment is completed, the measured deviation from the theoretical value and
Execute? (
No
Measured deviation < 0.001
- Press the or
Execute? (
- 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
Execute? (
- Press the ok/meas. key.
Measuring cell is dirty and/or contains air bubbles:
- Execute? (
- Clean the cell and readjust if necessary.
18
key.
) appears.
Yes
key.
) appears.
Yes
) is confirmed by pressing the ok/meas. button.
No
On
) appears.
key.
) appears.
Yes
key.
) appears.
Yes
) is confirmed by pressing the ok/meas. button.
No
3 ) at the reference temperature
CALIB (STD)
METTLER TOLEDO Densito 30PX
1000
•