Endress+Hauser Prosonic M FMU40 Sicherheitshinweis Seite 11

Prosonic M
Safety instructions:
Installation
Endress+Hauser
• Install the device according to the manufacturer's instructions and any other valid standards and regulations.
• The electrical apparatus must be integrated into the local potential equalisation (PML).
• The relationship between the permitted ambient temperature for the electronics housing, dependent on the
range of application and the temperature classes is shown in the tables (Tab. 1).
• Do not open the electrical connection of the power supply circuit under voltage in an explosive atmosphere.
• Connection compartment cover: "Do not open under voltage in explosive atmospheres" *
• Only use suitable certified cable entries for the application. Selection criteria as per IEC/EN 60079-14 must
be observed.
• For operating the transmitter housing at an ambient temperature under -20 °C, appropriate cables and cable
entries permitted for this application must be used.
• Continuous duty temperature of the cable ≥ Ta +5 K.
• When connecting the transmitter housing via piping entries permitted for this purpose, the associated seal
mechanisms must be arranged directly at the housing.
• Close unused entry glands with approved (Ex d) sealing plugs.
FMU42, FMU44
• Avoid electrostatic charging of the sensor (e.g. do not rub dry and install outside the filling flow).
Tab. 1
Zone 1 - Application
Temperature class
T6, T5, T4
Tab. 2
Option
Power supply and signal circuit for remote display, e.g. FHX40, in protection type:
intrinsic safety Ex ia IIC or IIB
Uo = 4.2 V
Io = 34 mA
Po = 36 mW
For connecting the Commubox service interface with the associated ToF cable:
Commubox output + ToF cable:
Uo = 3.74 V
Io = 9.9 mA
Po = 9.2 mW
When interconnected to a Prosonic M, the following results apply:
for material group: Lo =
IIC Co
IIB Co
Ambient temperature
–40...+60 °C
effective inner inductance
effective inner capacitance
Characteristic curve: linear
effective inner inductance
effective inner capacitance
Characteristic curve: linear
for material group IIC:
permitted outer inductance
permitted outer capacitance
0.15 mH 0.5 mH
≤ 8 μF ≤ 7 μF
KEMA 02 ATEX 1006 / XA176F-D
1
.
Li = negligible
Ci = negligible
Li = negligible
Ci = negligible
Lo ≤ 340 mH
Co ≤ 100 μF
1 mH 2 mH
≤ 5.5 μF ≤ 5 μF
≤ 10 μF
5 mH
≤ 4 μF
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