KROHNE optiplex 1300 c, Руководство пользователя

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Handbook OPTIFLEX 1300 C
OPTIFLEX 1300 C 28
Installation requirements
Earth the tank (entry pipe...), product and probe installation.
It is the customer's responsibility to prevent ESD. ESD cannot be solved by OPTIFLEX 1300 C ESD
protection.
Dismounting the device
Danger of injury from electrostatic discharge!
The probe may become electro statically-charged during operation. Earth the probe before handling.
2. Electrical connection
2.1 Wiring
2.1.1 General notes
Cable entry
Electrical connection is made through two cable entries located at the back of the housing. The cable
entries can be ordered with adaptors:
•
M20 x 1.5
•
½NPT
•
G ½
cable glands are only supplied with non-Ex and EEx ia-approved devices. You must supply the cable
glands for EEx d and FM-approved devices.
Access to terminals is via a blue threaded cover on the side of the housing. As the device is a 2-wire
instrument, the power supply and the output signal transmitted by the device use the same cable.
Reminder of wiring fundamentals
Power supply
•
disconnect the power supply before wiring the device
Cables
•
use metal cable glands and reinforced, shielded cable to minimize RFI (radio frequency interference)
and/or EMI (electromagnetic interference)
•
observe applicable local rules and regulations for wiring
•
always use the cable entry facing the terminal
•
avoid crossing or looping wires
•
add sufficient length to make U-bends in the cable to provide water with run-off points*
•
do not let the cable come into contact with hot or potentially hot surfaces such as the flange*
•
avoid kinks in the cable close to the cable entry glands by adding sufficient cable length. Reinforce with
a metal sheath at this point, if necessary*
* especially where the cable exits a conduit near to the device.