Exloc Instruments at ISOS

Exloc Instruments UK Ltd are the sole UK distributor of GM International products including SIL certified relays and switch repeaters designed and engineered to meet the requirements of modern niche projects.

The GM International D1000 / D5000 series of universal mount Intrinsically Safe galvanic isolators provide a most simple and cost effective means of implementing Intrinsic Safety into YOUR Hazardous Area applications.

This Autumn we will also be introducing the new range of DIN rail mounted and field mounted surge protectors from GMI which will protect 4-20mA HART, Digital I/O, World FIP and Fire & Gas signals and we hope to expand on that in the next issue.

Meanwhile, the switching of Safety-Related circuits demands the use of specific SIL certified Relay Output modules, capable of delivering the highest rate of availability and functional safety.   The original SIL relay by GM International was the D5293S, a relay output with a normally energised load and with load and line diagnostics which achieves SIL3 according to IEC61508:2010 Ed.2.

The D5294S and D5295S modules are both 4Amp modules (normally open and normally closed contacts respectively) which again achieve SIL3 and are suitable for Normally Energised or Fire & Gas /Normally De-energised load with open/short circuit diagnostics.

Both modules also provide full Load & Line Internal Diagnostics: load voltage and current, load resistance (patented), leakage from load to earth, coil integrity and internal faults.  Moreover, MODBUS communication allows the units to be remotely interrogated and configured.

Hardware is SIL 3 certified, while diagnostic functions are now also SIL 2 certified by TUV: they remain two independent features, which can be used separately or together.

All models are ATEX, IECEx and SIL certified and are suitable for installation in Zone 2 / Div. 2 Hazardous locations.

The range of GM International modules which are SIL capable continues to expand and also includes the single channel D5093S and dual channel D5093D Loop Powered Switch Repeaters.  These modules operate at 24 to 220 Vac/Vdc and are suitable for safety related system applications requiring SIL 3 in high risk industries.

Each channel is able to reflect the presence of a 24 to 220 Vac/Vdc input signal to the output by closing an optically coupled Normally Open open-drain transistor (solid-state relay, MOSFET output).

Mounting of the units can be via standard DIN-Rail or on customized Termination Boards, in Safe Area or in Zone 2, group IIC T4.  All models are ATEX, IECEx and SIL certified.

The additional GM International D6000 range offers all the safety features of the D5000 range but provides the most simple and cost effective means of implementing isolation in non Hazardous applications whilst still maintaining high integrity and achieving SIL2 according to IEC61508 / IEC 61511.


Call us on 01457 239301 / 07557 371373 or e-mail sales@exloc.co.uk for further details.

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