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VP-420/421 Specifications Rev5.0
7. Instructions
7-1. Installation of Pickup
Attach Quick Fit to the bottom of pickup and install it to the vibration measurement point
(see Fig.7-1).
Ideally, the surface of the equipment on which the pickup will be installed should be as flat
as possible, and the contact surface should be coated with silicone grease or oil.
For a Water-Proof Connector Type pickup, fix pickup and then connect the dedicated cable.
Fig.7-1 Installation of Pickup (Example of MS-AS002 and MS-AS003)
Caution
Be sure to check the following items before installing pickup.
(1) Is the instrument to be measured grounded
If pickup mounting surface (measurement target instrument) is not
properly grounded, pickup may become charged and pickup may fail.
(2) Is the pickup mounting surface cleanly finished
Completely remove dirt, dust, paint, etc.
Also, make sure that the tapped holes
are upright with no foreign matter on the threads.
7-2. Laying of Pickup Cable
(1) Pickup cable fix away from the device to be measured and at the location closest to
the pickup, and then fix the cable appropriately so that there is no slack.
(2) When relaying the pickup cable, use a junction box, and use a twisted pair shielded
cable that takes the installation environment into consideration. Also, keep the wiring
as short as possible.
Note
(1) If pickup cable is parallel to power line of the inverter, etc., noise from the inverter may
affect the measurement. Install pickup cable as far away from power line as possible.
(2) When relaying pickup cable using junction box, install it in an environment with as
little noise as possible (in a place where noise countermeasures have been taken).
(a) Ideal Fixing
(b) Tap is slant
(c) Tap is shallow (d) Foreign Matter on face
