
® 2014 General Electric Company. All rights reserved.
Masoneilan 12400 Series Transmitter/Controller Instruction Manual | 11
Note 8: Barrier type
The barriers may be active or passive and from any certified manufacturer for FMRC and CSA as long as the barriers comply
with the listed entity parameters.
Note 9: Use in dust atmosphere
Dust-tight conduit seal must be used when installed in dust hazard environments.
Note 10: Multiple protection approvals
A device which has previously been installed without an approved IS barrier must NEVER be used subsequently in an
intrinsically safe system. Installing the device without a barrier can permanently damage the safety related components in the
device making the device unsuitable for use in an intrinsically system.