Microsensor MPM4730 Operation Manual page 12

could be connected with safe barrier output terminals.
Li：the max. internal inductance, the internal equal total inductance which could
exist on transmitter input terminals.
Lo：the max. external inductance, the biggest inductance which could be
connected with safe barrier's terminals.
4.3 Installation notes
There is a plastic tube inside the cable, it is used to connect gauge
sensor with the atmosphere. In the installation and operation, please be
sure the vented tube connected with the atmosphere unobstructed.
Please do not jam the vented tube with mud or sand, especially do not
make water or other liquid going through the vented tube.
4.4 The connection of Explosion-proof version transmitter and safe
barrier
a) Then the intrinsic safe version transmitter is used in explosive
environment, please connect the transmitter with the safe barrier
to form Intrinsic Safe Ex-proof System.
b) The installation of the intrinsic safe version transmitter should be
conformed to the standard of GB3836.15-2000. Part 15 The
Regulation of Electric Installation in Hazardous Area (except coal
mine) of Electric Equipment Operation in Explosive Gas
Environment.
c) Then Intrinsic safe version transmitter is used in Hazardous Area,
the power transformer which supplies the safe barrier should
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