Manual

36
Adjustment and commissioning
9.8. Calibrating the full scale
The Fig. 30 and the Fig. 31 show the relation between the measured
fluid velocity and the value of the frequency or current provided by
the outputs.
256
Hz
0
m/s
0.1
240
Full scale error
Calibrated full scale
Full scale + 20%
Fig. 30: Relation between the measured fluid velocity and the value
of the frequency output
22
mA
0
m/s
0.1
20
4
Calibrated full scale
Full scale + 20%
Full scale error
Fig. 31: Relation between the measured fluid velocity and the value
of the current output
If no predefined measuring range is applicable to your process, the
device can be calibrated with the actual max. flow velocity of the
application.
The low bound of the measuring range is 0 m/s.
→ Position the switches 4 and 5 to ON (see Fig. 26, chap. 9.2).
→ Install the device on the pipe as described in chap. 8.
→ Allow the fluid to circulate in the pipe at maximum velocity.
→ Calibrate the full scale, see Fig. 32 and Fig. 33.
English
Type 8041