Burkert 6104 Instructions De Service page 14

As an example, some pairs of values for the ignition protection type Ex ia are given
for the gas group IIC.
Coil Type G1 642 735 in ignition protection type intrinsically safe Ex ia IIC.
Voltage value [V] = Ui
Current value [A] = li
Data on technical function
Coils of Type G1 642 735 are available in 2 versions:
1) Version for use with supply modules 300 Ω (300 Ω barrier).
2) High resistance version for use with other approved supply modules (e.g. 8-fold
remote I/O from Company Stahl).
Version
Versionor use with
300 Ω supply
module
High resistance
version
Version for type
8650
The maximum voltage and current values are determined by the permissible electri-
cal equipment.
Permissible ambient temperature range
The maximum permissible ambient temperature depends on the input power, tem-
perature class and the type of assembly. The relevant values should be taken from
the above tables.
Type of protection
At least IP 20 to EN 60529 (DIN VDE 0470 Part 1).
14 - 01 ATEX 2173
15 18 20
0.9 0.44 0.309 0.224 0.158 0.12
Resistor Min. terminal
R20 [Ω] voltage [V]
320 9,3
510 11,7
125 6,1
22 25 28
Min. current
[mA]
29
23
49
30 35
0.101 0.073
Distinction
code
01
02
03