Endress+Hauser Levelflex FMP50 Bedienungsanleitung Seite 24

XA00518F-E
Safety instructions: General
Safety instructions:
Special conditions
24
• Staff must meet the following conditions for mounting, electrical installation, commissioning and
maintenance of the device:
– Be suitably qualified for their role and the tasks they perform
– Be trained in explosion protection
– Be familiar with national regulations
• Install the device according to the manufacturer' s instructions and national regulations.
• Do not operate the device outside the specified electrical, thermal and mechanical parameters.
• Only use the device in media to which the wetted materials have sufficient durability.
• 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.
• When replacing the probe electronics or opening the connection between the remote cable and the
probe, a jumper plug must be used or a short-circuit must be established between the probe
contact and the potential equalization conductor to avoid electrostatically charging the probe.
Permitted ambient temperature range at the electronics housing:
–40 °C ≤ T ≤ +80 °C
a
Optional specification, ID Jx (Test, Certificate) = JN
Permitted ambient temperature range at the electronics housing:
–50 °C ≤ T ≤ +80 °C
a
• 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.
Basic specification, Position 5 (Housing) = A
Avoid electrostatic charging of the housing (e.g. friction, cleaning, maintenance, strong medium
flow).
 4
1 Isolated capacitance:
with one metal plate: ≤ 3 pF (permitted in all areas for Equipment Groups II and III)
with two to three metal plates: ≤ 10 pF (not permitted in Zone 0 and for Equipment Group IIC)
2 Housing
Device type FMP52, FMP55
A probe coated with non-conductive material can be used if avoiding electrostatic charging
(e.g. through friction, cleaning, maintenance, strong medium flow).
Levelflex FMP50/51/52/53/54/55/56/57
2
1
A0032146
Endress+Hauser