Technical data
Flow meter FC01-Ex Flow meter FC01-Ex
Examples 71 Examples 71
Expansion of the characteristic curve
By following the instructions of para. 4.2.7 an existing curve can also be expanded upward.
In application example 1, the flow velocity range shall be increased by 0.30 m/s. This means that
two additional trim points are required: at 1.95 m/s and at 2.10 m/s.
To do this, branch into menu CUSTOMER TRIM and enter old because the existing curve shall
not be deleted but rather be expanded.
Increase the number of trim points from 10 to 12. Do not change the temperature difference,
leave it at 3.3 °C!
Then assign flow velocity 2.10 m/s to trim point 12 (for ease of usage it had already been
pre-assigned with 1.82 m/s) and start the automatic calibration. After determination of the Y
value for point 12, trim point 11 is assigned to a velocity of 1.95 m/s (it had already been
pre-assigned to 1.81 m/s) and the automatic calibration is started..
All other data remain unchanged and shall be confirmed by pressing M until the end of the
CUSTOMER TRIM menu is reached.
Expansion of the characteristic curve
By following the instructions of para. 4.2.7 an existing curve can also be expanded upward.
In application example 1, the flow velocity range shall be increased by 0.30 m/s. This means that
two additional trim points are required: at 1.95 m/s and at 2.10 m/s.
To do this, branch into menu CUSTOMER TRIM and enter old because the existing curve shall
not be deleted but rather be expanded.
Increase the number of trim points from 10 to 12. Do not change the temperature difference,
leave it at 3.3 °C!
Then assign flow velocity 2.10 m/s to trim point 12 (for ease of usage it had already been
pre-assigned with 1.82 m/s) and start the automatic calibration. After determination of the Y
value for point 12, trim point 11 is assigned to a velocity of 1.95 m/s (it had already been
pre-assigned to 1.81 m/s) and the automatic calibration is started..
All other data remain unchanged and shall be confirmed by pressing M until the end of the
CUSTOMER TRIM menu is reached.
Manual entry of a characteristic curve
It is also possible to enter a custom designed curve by means of the keyboard.
This may be reasonable when several FC01-Ex flow meters are used under identical conditions
(medium, installation etc.).
To duplicate the expanded curve of example 1 on a second FC01-Ex, select the calorimetric
sensor in menu SENSOR SELECT, set its C value and enter FLUID in menu MEDIUM SELECT.
For other entries proceed as described for example 1 (Implementation).
Manual entry of a characteristic curve
It is also possible to enter a custom designed curve by means of the keyboard.
This may be reasonable when several FC01-Ex flow meters are used under identical conditions
(medium, installation etc.).
To duplicate the expanded curve of example 1 on a second FC01-Ex, select the calorimetric
sensor in menu SENSOR SELECT, set its C value and enter FLUID in menu MEDIUM SELECT.
For other entries proceed as described for example 1 (Implementation).
2.10
1.95
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
V [m/s]
12
11
10
9
8
7
6
5
4
3
2
1
Y
35441
35396
35346
35267
35158
35063
34890
34668
34347
33846
32957
24635
Trim point
2.10
1.95
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
V [m/s]
12
11
10
9
8
7
6
5
4
3
2
1
Y
35441
35396
35346
35267
35158
35063
34890
34668
34347
33846
32957
24635
Trim point