Omega LVU-700, Руководство пользователя

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34
Wiring
(continued)
Step Six
WIRE CONNECTIONS
(+) Power & (-) Return: (+) Power and (-) Return leads are for
connection to a 24 VDC power supply or to a 4-20 mA loop power
source. The (+) and (-) wires can be extended up to 1,000 feet
using a 22-gauge or larger wire.
(W) Tx (Out) & (G) Rx (In): (W) Tx and (G) Rx leads are reserved
for use with LVCN414-SW software. These wires should only be
connected to one device at a time (i.e. only to LVCN414-SW
software). In addition, these wires should not be connected to
LVCN414-SW software while power is supplied from any source
other than the LVU500-USB Fob. The maximum cable distance
between the computer and LVU700 series is 15’.
Note: Never
allow the white or green wires to touch any power supply.
LVU706 Series Shown
GENERAL NOTES FOR ELECTRICAL CONNECTIONS, USAGE AND SAFETY

Where personal safety or significant property damage can occur due to a spill, the installation
must have a redundant backup safety system.

Wiring should always be completed by a licensed electrician.

Supply voltage should never exceed 28 VDC.

Protect the sensor from excessive electrical spikes by isolating the power, whenever possible.

The sensor materials must be chemically compatible with the liquids to be measured.

Design a fail-safe system for possible sensor and/or power failure.
o
During power failure, relays will remain in their current state and will not change until power is
restored and the signal is reacquired.

Note: When connecting the sensor to the LVCN414-SW software, you must remove the display or the
software will not connect. Once completed, you can re-connect the display to the terminal.

Never use the sensor in environments classified as hazardous.