Hochiki ESP Addressable Optical/Heat/CO Multisensor Detector (Ivory Case) (ACD-EN)

The Hochiki ACD-EN is an intelligent multi-sensor in an ivory case for the Hochiki ESP (Enhanced Systems Protocol) analogue addressable fire detection system. It has optical smoke, heat and carbon monoxide (CO) sensing elements and offers 24 EN-approved modes of operation (control panel compatibility required). The CO element can help detect fire as well as act as a CO alarm for life-threatening CO levels.

Key features

• Low profile, matching the rest of the ESP sensor range
• Heat, optical and CO sensing elements
• CO alarm (COHb) facility
• 10-year CO sensor life (dependent on operational usage)
• Programmable fire threshold level
• Remote indicator and LED controllable separately (panel dependent)
• Two-colour LED: green when polling, red in fire
• 24 EN-approved modes of operation

Technical specifications

• Ordering code: ACD-EN (ivory)
• Operating voltage: 17-41 V DC
• Loop pulse voltage: 7-9 V DC
• Quiescent current: 410 µA (typ.)
• Loop current (when polled): 22 mA ±20%
• Remote indicator current: 8.0 mA ±20%
• LED current: 9.1 mA
• Surge current: 40 mA (for 50 ms)
• Maximum consumption: 30 mA
• Operating temperature: -10 °C to +50 °C
• Relative humidity: <95% RH (at 40 °C), <80% RH (at 50 °C)
• Storage temperature: -20 °C to +50 °C
• Case material: polycarbonate outer cover, PC/PS-GF terminal plate
• Weight without base: 105 g
• Dimensions: Ø100 x 45 mm (H) without base
• Compatible bases: YBN-R/3, YBN-R/3(SCI), YBO-BS, YBO-BSB2
• Ingress protection: IP42
• Approvals: EN 54-5:2017+A1:2018, EN 54-7:2018, EN 54-26:2015, EN 54-29:2015, EN 54-30:2015, EN 54-31:2015, CEA 4021:2003
• Note: this sensor does not support sleep mode