New from fire detection product company Hochiki Europe, three new sensors. The ALN-EN, ATJ-EN and ACC-EN devices have a number of features the makers say to reduce false and unwanted alarms.
Replacing the ALG-EN photoelectric smoke sensor, the ALN-EN builds further refines the company’s High Performance Chamber technology. Its design minimises the differences in sensitivity found in flaming and smouldering fires, providing an optical chamber that is equally reactive to all smoke types and which it is claimed reduces the possibility of false alarms.
Hochiki Europe’s ACB-E heat sensor has been superseded by the ATJ-EN, which incorporates a variable temperature heat element as well as a rate of rise heat element – both of which can be managed from a control panel. This allows either element, or both at once, to play an active part in making the alarm decision. And the ACC-EN has taken over from the ACA-E as the company’s flagship multi-sensor. It features three modes, allowing the optical element, the thermal element or both to be active. Like the ALN-EN it also has High Performance Chamber Technology.
All three devices are compatible with Hochiki Europe’s Enhanced Systems Protocol (ESP) – the addressable communications for fire detection. To help with identification, newly designed ergonomic outer covers come with ‘at-a-glance’ marking – unmarked denotes smoke, one ring heat and two rings indicate it is a multi-sensor.
Each device is fully backwards compatible with its predecessor, for a transition if products need to be retrofitted into a system. WThe chambers can be removed or replaced for maintenance, while EN54 and LPCB third-party approvals, alongside VdS and SIL verifications rubber-stamp their credentials.
Paul Adams, Hochiki Europe’s deputy marketing manager, said: ‘It has been incredibly difficult for our research and development team to improve what are widely considered to be three of the most reliable, versatile and robust sensors on the market. However, this is what they have achieved and we are confident that these devices represent a new benchmark in the battle against false alarms.’
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