Thermo Scientific LevelPRO Series, Руководство по установке

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Wiring
General Procedure
4-2
LevelPRO Installation Guide Thermo Fisher Scientific
Warning
For non-hazardous location installations, the cable entries into
the enclosure must be sealed with a compound to protect against the
passage of gas or vapors. The sealing compound should not be affected by
the surrounding atmosphere or liquids. The sealing compound must have a
thickness of at least 5/8 inch (16 mm).

Warning
If metal conduit is used, the conduit must be grounded.

Warning
Connect the AC wiring earth ground to the internal safety
ground terminal, as shown in the wiring diagram. Refer to “Optional AC
Power” later in this chapter to change the AC supply voltage.

The installation layout drawing (868502) provides general guidance for
routing the cables to the unit. The installation wiring drawing (868503)
shows the function of each connector pin on the CPU board and optional
AC power / relay board. In addition, the drawing shows cable requirements
for connecting the sensor to the transmitter, power requirements, and
grounding locations.
The label on the top of the detector-transmitter chassis also shows
connector pin information for wiring the power boards, including the relay
contacts, the contact closure inputs, and the current output. Drawing
868519 provides additional instructions for wiring the RS485 and RS232
serial port connectors.
Follow this general procedure to access the detector electronics for wiring.
1. Ensure all source housing shutters are in the OFF position.
2. Ensure all power to the gauge is turned off.
3. Remove the housing access cover by loosening the screw on the cover
retaining bracket and sliding the bracket off of the housing cover.
Unscrew the housing access cover. Two lugs on the top of the cover aid
with removal.
Wiring Drawings
General
Procedure