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4.6
The keypad ...................................................................................................................... 25
4.6.1
Measuring method selection (plate, ring, density) ...................................................... 27
4.6.2
Starting and stopping measurements......................................................................... 27
4.6.3
Entering measuring parameters ................................................................................. 28
4.6.4
Changing the basic settings (setup) ........................................................................... 29
4.6.5
Illumination ................................................................................................................. 30
4.6.6
Stirrer ......................................................................................................................... 30
4.7
Suspending the measuring probes .................................................................................. 31
5 Cleaning procedures.................................................................................... 32
5.1
Cleaning the sample vessel ............................................................................................. 32
5.1.1
Step 1: Cleaning with water........................................................................................ 32
5.1.2
Step 2: Check cleanliness .......................................................................................... 32
5.1.3
Step 3 (if necessary): Scarfing ................................................................................... 33
5.1.4
Step 4 (if necessary): Cleaning with oxidising acid .................................................... 33
5.2
Cleaning the ring and plate .............................................................................................. 33
5.3
Cleaning the measuring probe for determining the density .............................................. 34
6 Preparing a measurement ........................................................................... 35
6.1
Safety information ............................................................................................................ 35
6.1.1
Working with highly flammable liquids........................................................................ 35
6.1.2
Measurements at high temperatures.......................................................................... 35
6.2
Setting up and filling the sample vessel ........................................................................... 36
6.3
General course of a measurement................................................................................... 37
6.4
Data transfer and storage (optional) ................................................................................ 37
6.5
Check list before starting a measurement........................................................................ 38
7 Measurements with the plate or rod method ............................................... 39
7.1
7.1.1
Measuring mode ........................................................................................................ 39
7.1.2
Reading limit .............................................................................................................. 40
7.1.3
Interval ....................................................................................................................... 40
7.1.4
Wetted length ............................................................................................................. 40
7.2
Parameters for the plate method in Setup........................................................................ 41
7.2.1
Immersing speed (mm/min)........................................................................................ 41
7.2.2
Detection speed (mm/min) ......................................................................................... 42
7.2.3
Immersion depth (mm) ............................................................................................... 42
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