Endress+Hauser Micropilot FMR67 - Safety Instructions: Installation; Safety Instructions: Special Conditions

Micropilot FMR67 XA01554F-A
Endress+Hauser 17
• Avoid electrostatic charging:
–
Of plastic surfaces (e.g. housing, sensor element, special varnishing, attached additional
plates, ..)
– Of isolated capacities (e.g. isolated metallic plates)
• Modifications to the device can affect the explosion protection and must be carried out by staff
authorized to perform such work by Endress+Hauser.
• Refer to the temperature tables for the relationship between the permitted ambient temperature
for the sensor and/or transmitter, depending on the range of application and the temperature
class.
Safety instructions:
Special conditions
Permitted ambient temperature range at the electronics housing:
–40 °C ≤ T
a
≤ +80 °C
• Observe the information in the temperature tables.
• In the case of process connections made of polymeric material or with polymeric coatings, avoid
electrostatic charging of the plastic surfaces.
• In the event of additional or alternative special varnishing on the housing or other metal parts:
– Observe the danger of electrostatic charging and discharge.
– Do not rub surfaces with a dry cloth.
• Avoid electrostatic charging of the sensor (e.g. do not rub dry and install outside the filling flow).
Device type FMR67 and Basic specification, Position 11-13 (Process Connection) = XxA
• Changing the position of the alignment device must be impossible:
– After the alignment of the antenna via the pivot bracket
– After tightening of the clamping flange
– After setting the damping ring (torque 15 Nm)
• Degree of protection IP67 must be fulfilled.
Device type FMR67 and Basic specification, Position 14 (Air Purge Connection) = 1, 2
• If equipment with Ga/Gb or Da/Db is required: In the closed state the minimum degree of
protection of the installation must be IP67.
• After removing the air purge connection: Lock the opening with a suitable plug.
– Torque: 6-7 Nm
– For Da/Db: thread engagement > 5 turns
• Degree of protection IP67 must be fulfilled.
Safety instructions:
Installation
A
2
1
1
5
4
6
3
A0031947

2
A Zone 20, Zone 21
1 Potential equalization line
2 Electronics compartment Ex ia; Electronic insert
3 Power supply
4 Connection compartment Ex tb
5 Tank; Zone 20, Zone 21
6 Potential equalization