Safety Instructions: Installation - Endress+Hauser Liquiphant FTL51B Safety Instruction

XA01810F-C
Safety
instructions:
Installation
12
A
3
2
1
 1
A Zone 1, Zone 21
1 Tank; Zone 0, Zone 1, Zone 20, Zone 21
2 Electronic insert
3 Enclosure
4 Basic specification, Position 3, 4 = A7, A8:
Associated intrinsically safe power supply units
Basic specification, Position 3, 4 = GA:
Only associated intrinsically safe power supply unit FML621 from
Endress+Hauser
5 Potential equalization line
6 Local potential equalization
• Connect the device using suitable cable and wire entries of protection
type "Intrinsic safety (Ex i)". An ingress protection of at least IP54
must be achieved.
• When the device is connected to certified intrinsically safe circuits of
Category Ex ib for Equipment Groups IIC and IIB, the type of
protection changes to Ex ib IIC and Ex ib IIB.
• Continuous service temperature of the connecting cable: ≥ T
• Perform the following to achieve the degree of protection IP66/67:
• Screw the cover tight.
• Mount the cable entry correctly.
• Seal unused entry glands with approved sealing plugs that correspond
to the type of protection.
• Observe the pertinent guidelines when interconnecting intrinsically
safe circuits.
Liquiphant FTL51B, FTL63
4
5
5
6
A0025536
+20 K.
a
Endress+Hauser