3500/04 Internal Barriers are intrinsically safe interfaces that provide explosion
protection for transducer systems connected directly to the 3500 Machinery
Protection System.
The barrier designs are fully compatible with the 3500 System, and provide a

convenient and cost-effective solution for installing all types of transducer

systems within a hazardous area. Unlike external barriers, 3500 Internal Barriers
are an integral part of the 3500 System and will not degrade the 3500 System’s
performance.
We can supply most Bently Nevada transducer systems that have
comprehensive approvals for hazardous area installations and are matched to
those of the 3500 Internal Barriers (consult Table 1 for compatible monitors and
transducers). The design of each component complies both individually and as
part of a system with the strict safety requirements of North American and
International Standards. This removes the need for a system designer to
reference individual certificates to verify the compatibility between components.
Standard and Internal Barrier monitors can reside within the same 3500 rack,
which increases the overall flexibility of the 3500 system. Users can upgrade
standard monitors to those that contain internal barriers by replacing existing
I/O modules.

Ordering Information
3500/04-01
IS Earthing Module
Note: Order Internal Barriers by specifying the appropriate I/O
Module type for each monitor module, and install an IS Earthing
Module (p/n 3500/04-01) in each rack containing internal barriers.
Consult Specifications and Ordering Information for each 3500
monitor module to order the appropriate I/O module.
Spares
3500/04-01
Internal Barrier Earthing Module
(includes front panel).
135473-01
3500/25 I/O Module with Internal
Barriers and Internal
Terminations.
135489-04
3500/40 I/O Module with Internal
Barriers and Internal
Terminations.
135489-01
3500/42, /70, /72 I/O Module with
Internal Barriers (4 x prox./accel.
ch’s) and Internal Terminations
(option A04).
135489-02
3500/42, /70, /72 I/O Module with
Internal Barriers (2 x prox./accel. +
2x Velomitor ch’s) and Internal
Terminations
(option A05).
135489-03
3500/42, /70, /72 I/O Module with
Internal Barriers (4 x Velomitor
channels) and Internal
Terminations

made in USA

Great System In.(GSI) a name synonymous with Process Control Instrumentation and Electrical and Instrument and Solution Provider have established themselves as a Quality Leader since its inception in 1998 based at Hong Kong ( China ).

For more than 25 years, we have successfully executed many prestigious orders by supplying Sophisticated Electronic Instruments and Control Systems and HT Panel and LT and Panel. Indigenization of the instruments of our product range have been in hand with our commitment to the manufacture of safe, reliable and quality instrument. Our thrust today is in the field of microprocessor based instrumentation and control systems. A knowledge inspiring and skilled arena that we are in, we are staffed to meet the dictates of the field and thus can provide various control and monitoring software packages for Instrumentation and control.

Application Gallery

Power : Feed Water (Drum Level & DP across Drum Level), Furnace Vacuum, SH Steam Temp Stage I & II (L&R), Dearator Level, Condenser Hotwell Level and REC, HP Heater Level, LP Heater Level, Gland Seal Steam Pressure, Gland Steam Temperature, Thermal Load, FD, PA and Vapor Fan Control

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Steel : Blast Furnaces, Continuous Casting, Reheating Furnaces, Biological Waste Treatment, Annealing Lines Sintherization

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