K441XX Automatic Non-Woods Metal Noack Evaporative Apparatus
Operation and Instruction Manual
K441XX-Manual
- 10 -
6 Operation
6.1 Summary of Test Method
A quantity of 65 grams of sample is heated in a
crucible at 250°C with a constant flow of air drawn
through it for 60 minutes. At the end of the test, the
sample is cooled and reweighed. The loss in mass
of the oil is then determined.
6.2 Analysis Setup Procedure
WARNING:
DO NOT INSERT THE CRUCIBLE
INTO THE BATH UNTIL THE SOFTWARE
PROMPTS THE USER AT THE START OF
OPERATION.
1. Press the
Start Analysis
button on the main
menu screen (Figure 5) to open the analysis
startup panel. See Figure 8 below:
Figure 8: Analysis Startup Screen
2. Touch the
Analysis Name
field to identify the
sample. An on-screen keyboard will pop up
(See Figure 9 below). The analysis name
entered will automatically be listed as the test
title in the results browser. This will allow the
operator to easily recognize the analysis when
using the results browser for review.
Figure 9: On-Screen Keyboard Pop-Up
NOTE:
If the analysis name is left blank the
analysis will not start.
3. Select the method by touching the
Method
field. Method A is shown in Figure 8 above.
Method A:
Temperature Control via PT100
probe in the Heating Block (Bath)
Method B:
Temperature Control via PT100
probe in the Crucible.
4. Select the set-point temperature for the test
based on the selected method. Switching the
method will automatically change the
temperature to that prescribed by the method.
5. Weigh the empty crucible without the cover to
the nearest 0.01g and enter the measured
weight.
6. Pour 65g ± 0.1g of sample into the crucible and
enter the measured weight to the nearest 0.01g
into the dedicated fields.
7. When all of the above parameters are entered,
start the analysis by pressing the
START
button.
WARNING:
DO NOT INSERT THE CRUCIBLE
INTO THE BATH UNTIL THE SOFTWARE
PROMPTS THE USER AT THE START OF
OPERATION.
8. According to the method and temperature
selected, the bath will heat to the prescribed
set-point.
NOTE:
The initial heating phase will show the
bath’s temperature even if method B was
selected. During this phase the graph will not
display data and the aspiration will remain idle.
9. While the bath is heating, ensure the glassware
is correctly set-up as shown on Page Figure 1,
Page 6. Verify that the manometer is level and
fill with water as needed so that the inclined
scale reads zero.
Make sure the bleed valve
is fully open.
10. Once the bath has reached the set temperature
an audible alarm will sound and the Crucible
Prompt will appear on the screen. See Figure
10:
Содержание K44100
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