Cable Entries; Cable Specification; Overvoltage Protection - Endress+Hauser Micropilot FMR60B Technical Information

Micropilot FMR60B HART

Cable entries

Cable specification

Overvoltage protection

Endress+Hauser
WARNING
L
Explosion Hazard!
‣
Please refer to the separate documentation on applications in hazardous areas for the safety
instructions.
For optimum electromagnetic compatibility:
• Keep the potential matching line as short as possible
• Observe a cross-section of at least 2.5 mm
A
1
2
A Single compartment housing, plastic
B Single compartment housing, aluminum
C Dual compartment housing
D Dual compartment housing, L-form
1 Cable entry
2 Dummy plug
The type of cable entry depends on the device version ordered.
Always route connecting cables downwards so that moisture cannot penetrate the connection
compartment.
If necessary, create a drip loop or use a weather protection cover.
Rated cross-section
• Supply voltage
2
0.5 to 2.5 mm (20 to 13 AWG)
• Protective earth or grounding of the cable shield
> 1 mm 2 (17 AWG)
• External ground terminal
0.5 to 4 mm 2 (20 to 12 AWG)
Cable outer diameter
The cable outer diameter depends on the cable gland used
• Coupling, plastic:
⌀5 to 10 mm (0.2 to 0.38 in)
• Coupling, nickel-plated brass:
⌀7 to 10.5 mm (0.28 to 0.41 in)
• Coupling, stainless steel:
⌀7 to 12 mm (0.28 to 0.47 in)
The overvoltage protection can optionally be ordered as a "Mounted accessory" via the product
structure
Devices without optional overvoltage protection
Equipment from Endress+Hauser fulfills the requirements of the product standard IEC / DIN EN
61326-1 (Table 2 Industrial Environment).
Depending on the type of port (DC power supply, input/output port) different testing levels according
to IEC / DIN EN 61326-1 against transient overvoltages (Surge) are applied (IEC / DIN EN
61000-4-5 Surge):
Test level on DC power ports and input/output ports is 1 000 V line to earth
Devices with optional overvoltage protection
• Spark-over voltage: min. 400 V
• Tested according to IEC / DIN EN 60079-14 sub chapter 12.3 (IEC / DIN EN 60060-1 chapter 7)
• Nominal discharge current: 10 kA
2 (14 AWG)
B
1 1
2
DC
C D
1
2 2
A0046584
17