Endress+Hauser Levelflex M FMP41C - Recommended Connection; Degree of Protection; Post-Connection Check

Levelflex M FMP41C with HART/4...20 mA Wiring
Endress + Hauser 27
"
Caution!
If the HART communication resistor is not built into the supply unit and the HART interface is to
be used, it is necessary to insert a communication resistor of 250 Ω into the 2-wire line.
4.3 Recommended connection
4.3.1 Equipotential bonding
Connect the Equipotential bonding to the external ground terminal (1) of the transmitter.
L00-FMP41Cxx-17-00-00-en-003
4.3.2 Wiring screened cable
"
Caution!
In Ex applications, the instrument must only be grounded on the sensor side. Further safety
instructions are given in the separate documentation for applications in explosion hazardous areas.
4.4 Degree of protection
• with closed housing tested according to
– IP68, NEMA6P (24 h at 1.83 m under water surface)
– IP66, NEMA4X
• with open housing: IP20, NEMA1 (also ingress protection of the display)
4.5 Post-connection check
After wiring the measuring instrument, perform the following checks:
• Is the terminal allocation correct (see → ä 22 and → ä 23)?
• Is the cable gland tight?
• Is the housing cover screwed tight?
• If auxiliary power is available:
Is the instrument ready for operation and is the liquid crystal display visible?
1
1
F12/F23 housing T12 housing