Hardi HC2500 - Flow transducer testing

29
T165-0004
N
S
5-7 mm
1
/
8
-
1
/
4
Testing speed transducer
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.
For inductive type
3. Bring a metallic object (3 to 5 mm) up to the
transducer. This will register 1.4 +/- 0.2 volt and the
diode will turn on.
4. By removing the object, this will register 12.0
+/- 1.0 volt. Diode is o.
For Hall element type (with magnet)
3. By bringing the south pole of a magnet (dis-
tance 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.