KROHNE UFM 500 EN - Manual (Page 35)

35
7.3 System check-out
Always switch off power source before connecting and disconnecting cables!
The test points in the grey-colored boxes can only be carried out on systems with separate signal converter!
yes
yes
yes
yes
yes
Are the sensor cables connected
properly?
Are current and frequency outputs
correctly set?
Are receiver instruments properly
connected to the terminals B1, B ⊥ ,
B2, I, I+, I ⊥ ? (in series, note load,
measuring ranges in keeping with
the current output).
Is the signal converter set to the
correct primary constant GK?
Set “zero” flow in pipeline. Zero
drift (NA) on display or output
receiver instruments less than:
NA [m 3 /hr] ≤ DN [mm] x 1.4 x 10 -3
DN = meter size
yes
Rated voltage of signal converter
correct?
no
no
no
no
no
no
yes
Compass field display “OFF”?
(see sect. 4.4)
no
Connect cables as described in
section 2.2.3.
UFC 500… signal converter:
Set correctly. Mark change on the
name plate.
UFC 400… signal converter:
Consult factory!
Connect as specified in sect. 2.3!
UFC 500… signal converter:
Enter correct primary constant GK.
UFC 400… signal converter:
Consult factory!
UFC 500… signal converter:
Set zero as described in sect. 7.2.1.
UFC 400… signal converter:
Consult factory!
Set to correct rated voltage!
Air bubbles in process fluid?
no
Consult factory!
Elimate cause of air bubbles.
Compass field now “OFF”?
yes
yes
no
Continued on next page