Wiring
Micropilot M FMR 231 with HART/4...20 mA
26
E Hauser
4.3
Recommended connection
4.3.1
Equipotential bonding
Connect the equipotential bonding to the external ground terminal of the transmitter.
4.3.2
Wiring screened cable
"
Caution!
In Ex applications, the screen 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
•
housing: IP 65, NEMA 4X (open housing and pulled out display: IP20, NEMA 1)
•
antenna: IP 68 (NEMA 6P)
4.5
Post-connection check
After wiring the measuring instrument, perform the following checks:
•
Is the terminal allocation correct (
→
Page 21 and Page 22)?
•
Is the cable gland tight?
•
Is the housing cover screwed tight?
•
If auxiliary power is available:
Is the instrument ready for operation and does the liquid crystal display show any
value?