PA470-D
5/3/05 NK/AH
PA470-D INSTALLATION
3/4
Analog Monitor Signal Output Test
This test will verify that the Proportion-Air unit’s monitor signal and controlling transducer are work-
ing properly.
Voltage Analog Monitor Output Signal Test
This is for Proportion Air units that have TFEE or TFIE in their part number string.)
1. Plug one of the H4444 patch cord into the white jacks (W1 and W2).
2. Plug the other H4444 patch cord into the red jacks (R1 and R2).
3. Set your multimeter to D.C. voltage.
4. Put multimeter’s negative probe in the green socket (G) and the positive probe in the socket of ei-
ther end of the patch cord that is plugged into the red jacks (R1 and R2).
5. The voltage displayed on the multimeter will be the equivalent of the pressure (vacuum, force,
torque, position, or flow) that the controlling transducer (on board if a QB1 or QB3, external if a
QB2) is sensing. If this value is 0 or is a fixed value regardless of what happens downstream, the
analog monitor may not be functioning or the second loop transducer may be inoperable. See fig-
ure 7.
Figure 7
