Bently Nevada 19045, Руководство по установке

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DC-LVDT/Housing Assembly Model 19045, 19046, 19047 Installation Manual
8
POWER AND SIGNAL CONNECTIONS
Connections between the LVDT and the instrument signal module are shown on
the interconnect diagram contained in the instrument manual. Cabling is
generally fabricated at the user
T
s facility, unless a specific request is made to
have BNC supply it. It is recommended that three-wire shielded cable be used for
these connections to avoid erroneous indications due to noise interference.
CAUTION
Be certain the transducer output and drive
voltage conductors do not become cross-
wired. An OK indication may be obtained, but
the equipment will not be operational.
Prolonged cross-wired connection can
change the output stage characteristics,
resulting in uncalibrated performance.
The COM connector at the transducer should not be used as the shield ground.
Ground the shield at the SHLD terminal of the signal module located in the
instrument rack. Grounding the shield at both ends is not recommended.
Precautions should be taken to keep electromagnetic interference away from the
cable by observing the following instructions.
1. Do not route transducer cables with power cables and other noise
sources.
2. Use steel conduit between the transducer and instrument rack assembly.