23
Testing flow transducer (ref. no. 728816)
Wire connections:
BROWN wire to positive of 12 volt battery.
BLACK wire to negative.
BLUE wire to multimeter positive.
1. Check the rotor turns freely.
2. Each vane in the rotor has a magnet
in it with the pole facing out. Check
that the 4 magnets are present.
3. Check every second magnet has the
same pole orientation so the rotor
magnets are N - S - N - S.
4. Connect negative from multimeter to
negative of battery.
5. Set multimeter to DC volt.
6. By turning the mill wheel slowly, this
will register approx. 8.0 +/- 1 volt
with the diode on and 0.3 +/- 0.1 volt
with the diode off with every second magnet.
Testing speed transducer (ref. no. 729058)
Wire connections: BROWN wire to positive of 12 volt battery.
BLACK wire to negative.
BLUE wire to multimeter.
1. Connect negative from multimeter
to negative of battery.
2. Set multimeter to DC volt.
3. By bringing the south pole of a
magnet (distance
5 mm +/- 2 mm) by
the transducer, this
will register
0.3 +/- 0.1 volt.
4. By removing the
magnet, this will
register 7 .0 +/- 1.0 volt.
5-7
m
m
S
S
N
N
N
S