Vaisala MGP260 Series, Руководство пользователя

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Connect only de-energized wires. Never switch on the power supply
input before completing the wiring and closing the connection box.
CAUTION!
Table 5 Screw terminal wiring requirements
Property Specification
Connection torque 0.5 Nm ... 0.6 Nm
Wire cross section / connection capacity (solid
and flexible)
0.2 mm
2
... 2.5 mm
2
(AWG 24 ... 12)
Stripping length 7 mm (0.27 in)
Intrinsic safety
The overvoltage category of MGP260 series probes is I (non-mains equipment), as defined in
IEC 60664-1.
MGP260 probes are in conformance with the IEC 60079-11 dielectric strength requirement. For
the intrinsic safe IIB output parameters, see
Table 6 (page 18) .
Table 6 Intrinsic safe IIB output parameters
Parameter Value
U
o
25.2 V
I
o
78 mA
P
o
0.5 W
U
m
40 V
C
o
820 nF
L
o
20 mH
The parameters listed in Table 6 (page 18) apply when one of the two conditions below is
given:
• the total L
i
of the external circuit (excluding the cable) is < 1% of the L
o
value; or
• the total C
i
of the external circuit (excluding the cable) is < 1% of the C
o
value.
The parameters are reduced to 50% when both of the two conditions below are given:
• the total L
i
of the external circuit (excluding the cable) is
≥
1% of the L
o
value; and
• the total C
i
of the external circuit (excluding the cable) is
≥
1% of the C
o
value.
Note: the reduced capacitance of the external circuit (including cable) shall not be greater
than 1μF for Groups I, IIA, IIB & IIIC, and 600nF for Group IIC.
MGP260 User Guide M212504EN-A
18
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