Anton Paar DMA 4100 Manual De Instrucciones página 19

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Hint:
Preparation of degassed, bi-distilled water:
1. Boil fresh, bi-distilled water for several minutes to remove dissolved air.
2. Fill a clean glass flask full with the boiled water and cover it.
3. Wait until the water has cooled down to the approx. measuring
Performing the density check:
1. Select "adjustment", "density check", "density check settings".
2. Enter the settings corresponding to the density calibration fluid.
Hint:
For water the following settings are recommended:
density: 0.99820 (DMA 4100/4500); 0.998203 (DMA 5000)
max. dens. dev.:
temperature: +20.00 °C
check interval: 1 day
check density: on
Switching on "check density" activates a memory function. If the interval (1-
999 days) is expired, a flashing "Density Check Needed" in the headline of the
measuring window will appear.
3. Select "check density" to start the density check (the corresponding steps
4. •
Hint:
In each case ("density check: OK" or "density check: NOT OK") the measured
density and the deviation from the set density are displayed.
5. Up to 50 density checks can be stored with date and time. The activated
XDLIB28
Before each series of measurements check the validity of the adjustment
using degassed, bi-distilled water or an appropriate density standard.
The density check should be performed once every day.
temperature.
0.00010 g/cm
0.00005 g/cm
are shown on the display).
If the measured density is within the permitted range, the display shows
"density check: OK". Routine measurements can be carried out.
• If the measured density is out of range, the display shows "density check:
NOT OK". Clean and dry the measuring cell and repeat the density check.
If the result is still "density check: NOT OK", perform a new adjustment (see
Chapter 7.3).
density check or all stored density checks can be printed out.
7 Checking Procedure, Adjustment and Calibration
3
(DMA 4100/4500);
3
(DMA 5000)
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