อุปกรณ์ตรวจจับควันไฟ+ความร้อน

Smoke + Heat Detector

NB758 conventional (non-addressable) photoelectric smoke/heat detectors are state-of-the-art detectors suitable for connection to conventional (non-addressable) fire detection control and indicating equipment, or to addressable fire detection control and indicating equipment that can accept conventional (non- addressable) type detectors.

Advanced electronics in conjunction with a photoelectric smoke sensing chamber and an electronic thermistor provide early detection of fire and high immunity against unwanted alarms. The heat sensor provides fixed- temperature operation when the response threshold value is exceeded.

The NB758 range of conventional (non-addressable) detectors provides fire detection and alarm system designers with a Standards-compliant, economical fire detector for life safety and property protection applications

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The NB758 smoke/heat detectors are available in a wide range of variants to suit many applications.

Dual photoelectric smoke and heat sensors to detect either smoke, heat or a combination of the phenomena.
Advanced algorithms provide excellent detection discrimination
Ideal for both fast-flaming and slow smouldering fires.
High immunity against unwanted alarms
Stable smoke sensing chamber. No adjustment or replacement required
Easy installation. No programming required
Low maintenance .
Sleek low-profile housing desigrn.
Surface-mount device (SMD) circuit board design
Dual LEDs for 360e visibility
Magnet-initiated alarm test function available with some models
4-wire model for DC (9-33) V operation
4-wire model include a N/C or N/O alarm relay output

Specifications

Model	NB758SH-4
Operating voltage	DC (9~33) V
Start-up current	≤170 μA
Start-up time	≤ 60 s
Standby current	≤ 50 μA
Alarm current (max)	40 mA
Sampling time	≤ 5 s
Reset voltage	≤ 1 V
Reset time	≤ 3 s
Alarm response threshold (smoke)	( 1.90 ± 0.76 ) % / foot obscuration
Alarm response threshold (heat)	59°C static temperature and 11.1 °C/min rate-of-rise temperature
Alarm relay	SPST. N/O or N/C. 1.0 A@ DC 30 V/0.5 A@ AC 125 V
Operating temperature	-10°C ~ +50°C
Operating humidity	0% ~ 95% RH , non – condensing
Storage temperature	-25°C ~ +80°C
Storage humidity	0% ~ 98% RH, non – condensing
Alarm indicator	Two continuous emitting red LEDs
Dimensions (excluding contacts)	Ø 100 mm x 50 mm
Ingress protection rating	IP-43
Ceiling spacing for heat sensor	≤ 15 m

*Can transit to higher temperatures for heat sensor operation.

อุปกรณ์ตรวจจับควันไฟ+ความร้อน

Smoke + Heat Detector

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