Gas Detectors are ATEX & SIL 2 (3) Approved

Sensitron’s recent improvements and developments have been aimed at offering consistently more and more accurate sensors, reliable electronics and user friendly systems, complying fully with the SIL standards.

After more than 20 years experience, Sensitron’s third decade started with obtaining the TUV SIL 3 approval on GALILEO SMS and GELILEO 8/32 control panels. Along with these panels a new hi-tech generation of gas detectors was designed to meet with SIL2 (3) approvals and witness our total commitment to safety. A complete line of SIL2 (3) SMART ‘S’ gas detectors is now available offering fail-safe electronics and advanced sensing elements.

The detectors can provide either two simultaneous 4-20mA outputs coming from two independent sensors integrated into the same instrument, like SMART SMS, or provide a single output generated by the comparison of signals coming from combined technologies, as with the innovative Hybrid Gas Detector.

The SMART ‘S-IR’ introduces an innovative concept for reliable gas detectors in the premium safety market. Among the technologies available for gas detection in harsh environments, an innovative alternative is now offered by Sensitron’s Hybrid gas detector SMART S-IR. It compares the signals received from two different sensors (Pellistor and Infrared) integrated into a single stainless steel head to provide an accurate and prompt warning, while rejecting erroneous alarms.

The detector uses a hybrid technology sensor. The standard configuration comprises a high quality and reliability industrial Pellistor sensor and the NDIR sensor IRNET-P that provides an analogue voltage output that is linearized and temperature compensated.

The behaviour of the sensors is constantly monitored by a microprocessor and the incoming signals are compared to supply an output corresponding to the worst situation revealed in the shortest time. It guarantees the highest accuracy, with false alarm conditions close to zero.

SMART S-IR offers eight digits back-lit display and five mode status LEDs and provides three-wire 4-20mA output, RS485 Modbus communication and a further three relay outputs. As optional feature, is that it can come complete with Hart communication interface to allow remote monitoring.

For easy and safe maintenance, SMART S-IR features one-man non-intrusive calibration and, thanks to the innovative hot-swapping function, sensors can be replaced without interrupting the system operation or disconnecting the detectors. This makes SMART S-IR ideal for harsh environments that can not be declassified for maintenance.

All SMART ‘S’ detectors are SIL 2 (3) certified in compliance with EN50402/EN61508, and, as with all SMART3G, are ATEX certified according to ESR (IEC/EN60079-1) and Performance (IEC/EN60079-29-1).

For more information, go to www.sensitron.it