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l Power supply
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(4~20mA) /HART(2 wire)
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The power supply and output signal using
the same cable, specified power supply refer to technical
data; for Intrinsically safe type radar level meter, Safety
Barrier is needed between power supply and radar level meter.
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(4~20mA) /HART(4 wire)
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The power supply and output signal using separate
cables, specified power supply refer to technical data;
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RS485/Modbus
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Power supply and Modbus signal using the
same shielded cable with 2 cores.
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l Install Connection cable
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General Introduction
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Cable external diameter:
5~9mm(M20*1.5)
3.5mm~8.7mm(½NPT)
Connection cable is 2 core or 4 core
cables. The
Sensor cable need to be shielded cable to
free from electric drive, power supply cable or launcher devices interface
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(4~20mA) /HART(2 wire)
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Power supply cable can be common 2 core
cable
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(4~20mA) /HART(4 wire)
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Power supply cable should be cable with
grounding.
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RS485/Modbus
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Power supply cable should be shielded
cable
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General Introduction
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Ideally, both ends of the shield cable
should be grounded, but we should notice that there is grounding compensation
cable pass the sensor cable shield. When grounding, we can connect one end(In
switch cabinet, for example)with ground potential capacitance(1Μf;1500V)
Lower resistance grounding is recommended
(Note: if the instrument is used in hazardous
area, for potential transmission, both ends can not be grounded.
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