GE Masoneilan 469 Series Instruction Manual page 9

4. ATEX Intrinsic Safety Marking and Electrical
Safety Parameters (Contd)
• They are supplied by a certified power source
* for explosible atmospheres with the maximal
characteristics:
Ui = 16V ; Ii = 0.052A ; Pi = 0.169W.
* The power source (Control circuit) must be one
manufactured by Pepperl & Fuchs below:
WE 77/EX 1 or WE 77/EX 2
• The wiring connection is done on one or two terminal
connector type:
2
MK 3 ; 2.5mm ; 380 volts ; manufacturer:
WEIDMULLER or equivalent product.
4.2.1.3 Maximum Input Characteristics
Variation
DC Source
With
Micro-
AC Source
switch
Peak Value
With Proximity Switch
4.2.2 Types 496-858 and 496-858/. :
4.2.2.1 Type 496-8:
The position transmitter is connected to a linear tension
source of a certified type for use in group IIC hazardous
locations and its output circuit must be intrinsically safe
approved per EN 60079-11.
Maximum input characteristics at terminal block:
Ui (V) Ii (A)
28 0.11
© 2018 Baker Hughes, a GE company. All rights reserved.
Li
Ui Ii Ci
(μH)
(V) (A) (nF)
30 0.5 0 0
90 1.4 0 0
16 0.052 120 200 0.169
Ci (nF) Li (μH) Pi (W)
36 0 0.77
4.2.2.2 Type 496-858/. :
The additional functions of position transmitters are
identical to type 496-•58
Maximum input characteristics at terminal block of
additional function:
Variation
DC Source
With
Micro-
AC Source
switch
Peak Value
With Proximity Switch
Pi
(W)
–
-
496 Series Masoneilan Position Transmitter ATEX Instruction Manual | 9
Ui Ii Ci Li
(V) (A) (nF) (μH)
30 0.5 0 0
90 1.4 0 0
16 0.052 120 200 0.169
Pi
(W)
-
-