Vaisala CARBOCAP MGP260 Serie Installations- Und Sicherheitshinweise Seite 12

Table 2 Screw terminal wiring requirements
Property
Connection torque
Wire cross section / connection capacity (solid
and flexible)
Stripping length
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 3 Intrinsic safe IIB output parameters
Parameter
U
o
I
o
P
o
U
m
C
o
L
o
The parameters listed in
• the total L of the external circuit (excluding the cable) is < 1% of the L
i
• the total C of the external circuit (excluding the cable) is < 1% of the C
i
The parameters are reduced to 50% when both of the two conditions below are given:
• the total L of the external circuit (excluding the cable) is ≥1% of the L
i
• the total C of the external circuit (excluding the cable) is ≥1% of the C
i
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.
The values of L and C
o
the L plus cable inductances in the circuit and the sum of all of C
i
respectively.
Connecting probe to Insight PC software
The Insight PC software connection cable must only be used outside the explosion hazardous
area. Remove the probe from the process for configuration, and use only the Vaisala accessory
PC connection cable to connect the probe to Insight.
8
Table 3 (page 8) apply when one of the two conditions below is given:
determined by this method shall not be exceeded by the sum of all of
o
Specification
0.5 Nm ... 0.6 Nm
2
0.2 mm ... 2.5 mm
7 mm (0.27 in)
Table 3 (page 8).
Value
25.2 V
78 mA
0.5 W
40 V
820 nF
20 mH
2
(AWG 24 ... 12)
value; or
o
value.
o
value; and
o
value.
o
plus cable capacitances,
i
M212481EN-B