Proline Prosonic Flow 92F
ATEX II3G
0
Hauser
17
Potential matching
"
Caution!
• There must be potential matching along the circuits (inside and outside the hazardous area).
• The transmitter must be safely included in the potential matching system by means of the screw terminal
(c) on the outside of the transmitter housing or by means of the corresponding ground terminal in the
connection compartment (f).
• Alternatively, the sensor and the transmitter (compact version) or the connection housing of the sensor can
be included in the potential matching system by means of the pipeline if a ground connection, performed
as per the specifications, is ensured.
Cable entries
Thread for cable entry M20x1.5 or ½"-NPT or G ½", as required.
Connecting cable
cable
specifications
The sensor cable connection between the sensor and the transmitter has EEx ia explosion protection.
The maximum capacitance per unit length of the cable connection is 1
μ
F/km.
The maximum inductance of the cable is 1 mH/km.
The cable supplied by Hauser (max. 30 m) complies with these values.
Electrical connections
Terminal/electronics compartment cover (terminal assignment, see tables below)
e
Service connector (see also Page 19)
f
HART ground terminal: if the potential matching is routed via the cable and if two cables are used, both cables
must be connected to the potential matching system if a connection is not already established externally.
PROFIBUS PA and FOUNDATION Fieldbus: between the stripped fieldbus cable and the ground terminal,
the cable shielding must not exceed 5 mm in length
g
HART (Fig. 3): cable for supply voltage and/or pulse output
HART (Fig. 4): cable for supply voltage
PFM (Fig. 5): Optional pulse/frequency output, can also be operated as a status output
(not for PROFIBUS PA and FOUNDATION Fieldbus
PROFIBUS PA (Fig. 6): cable of input and output circuits
FOUNDATION Fieldbus (Fig. 7): cable of input and output circuits
!
Note!
PFM output (pulse/frequency modulation): connection as illustrated in Fig. 5
(only together with flow computer RMC or RMS 621).
4 to 20 mA HART
(connection with a cable)
Fig. 3
A0004027
4 to 20 mA HART
(connection with two cables)
Fig. 4
A0004028
4 to 20 mA HART
(PFM connection)
Fig. 5
A0004029
PROFIBUS PA
Fig. 6
A0004030
FOUNDATION Fieldbus
Fig. 7
A0004030
g
1 2
3 4
e
f
+
–
+
–
h
1 2
f
3 4
e
g
+
–
+
–
e
g
1 2
3 4
f
+
–
+
–
e
g
1 2
f
+
–
e
g
1 2
f
+
–
