G-Tek 62 Series, Руководство по эксплуатации

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To achieve the best results, the following notes should be considered:
1. Low level signal wiring such as that associated with thermocouples, RTDs and current
loops should always be kept separate from power and control output wiring.
2. Signal input wiring should be twisted pairs/triplets etc. The conductors should be
stranded rather than solid in construction. All signal wiring should use ground-shielded
wires or be routed through grounded conduit to minimize the effects of RFI and ESD.
3. Exceptional care should be taken when wiring to relay or solenoid coils, as large transients
are produced when coils (or any other inductive loads like motors or arc welding
equipment’s etc.) are switched. This problem can be eliminated using sui table
suppression devices across the coil. Coil transients can also be transmitted through the
air, so the recorder itself should be mounted as far as possible from power control devices
and/or wiring.
4. When line power is poorly regulated and / or subject to voltage surges or transients,
consideration should be given to the use of a line conditioning/transient suppressing line
power regulator. Process control motors, valves, relays and heaters should not be
connected to the same power lines that are used for instrumentation.
5. The connection of the Paperless Recorder to a proper safety earth ground is essential.
Such a connection not only reduces the possibility of electric shock, but also provides the
required return for the Paperless Recorder line power filters.
6. All local electrical codes of practice must be followed when installing any instrumentation.