Endress+Hauser Gammapilot M FMG60 - Page 61

Gammapilot M FMG60 with FOUNDATION Fieldbus Commissioning
Endress+Hauser 61
6.1.3 Calibration for density and concentration measurements
!
Note!
The fundamentals for calibrating for density and concentration measurement are described in
Section 6.5.1, P. 78.
Background calibration
(for details see Section 6.5.2, P. 80)
Calibration points
(one-point calibration, multiple point calibration, recalibration)
(for details see Section 6.5.3, P. 82)
Step Function Action/comments
1 Switch off radiation
2 Background calibration (*10) Select "start" with O or S;
confirm with F
3 Avg. pulse rate (*11) Wait until the value is stable, then confirm with F
4 Background calibration (*10) Select "stop/edit" with O or S;
confirm with F
5 Background pulse rate (*12) Confirm value with F
Continue with entering the calibration points
Step Function Action/comments
1 •Switch on radiation
• Fill the pipe with a medium whose density is known or take a sample
of the medium during the calibration and determine its density in the
laboratory (see Step 4).
2 Calibration point density (*1A) Enter the number of the calibration point:
• For one-point calibration: "1"
• For multipoint calibration: "1" - "9"
• For recalibration: "10"
3 Calibration start stop (*15) Select "start" with O or S;
confirm with F
4 Avg. pulse rate (*11) Wait until the value is stable, then confirm with F;
(during this time, take a sample of the medium and determine its density
in the laboratory)
5 Calibration start stop (*15) Select "stop/edit" with O or S;
confirm with F
6 Density calibration (*1B) Confirm value with F
7 Density value (*1C) Enter the density of the medium (which was determined in the
laboratory)
8 Use of cal. point (*1D) Select "used" with O or S;
confirm with F
9 Absorption coefficient (*1E) Display value; confirm with F
10 Reference pulse rate (*1F) Display value; confirm with F
11 Calibration next point (*19) • For one-point calibration: select "no";
this completes the calibration
• For multiple point calibration: select "yes";
repeats steps 1 - 10 with a medium with a different density
• For recalibration: select "no";
this completes the recalibration