Datasheet > 7251DHA

7251DHA

更新时间： 2024-11-18 06:31:35

品牌	Logo	应用领域
SYSTEMSENSOR		/
页数	文件大小	规格书
2页	156K
描述
High Sensitivity Duct Smoke Detector

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

7251DHA 数据手册

7251DH

High Sensitivity

Duct Smoke Detector

The System Sensor 7251DH detector is designed for

interior duct applications where high velocity, high

volume air changes are required for very early warning

ﬁre protection.

Features

The 7251DH high sensitivity duct smoke detector provides

dependable performance for management of fans, blowers, and

air conditioning systems by using an intelligent laser smoke sensor

residing in an eﬃcient housing design that samples air currents

passing through a duct. The twist-in, twist-out 7251 high sensitivity

laser smoke detector head allows easy removal for quick cleaning,

maintenance, and replacement without removing the duct housing.

The laser detector achieves sensitivities as low as 0.02 percent-per-

foot by using a laser diode instead of a standard LED light source

in the sensing chamber. Many sensitive areas cannot tolerate even

small amounts of smoke. This 7251DH detector is designed to

protect valuable assets and operations where systems must remain

online at all times.

•ꢀTemperature range 32°F to 100°F (0°C to 38°C)

•ꢀAir velocity rating from 300 to 4,000 FPM

•ꢀ24 VDC operation

•ꢀEasy and quick mounting to round or rectangular ducts from

1 ft to 12 ft (0.3 m to 3.7 m) wide

•ꢀ3 year warranty

Some ideal applications for the 7251DH high sensitivity duct smoke

detector include:

– Telecommunications switching facilities

– Cellular telephone infrastructure

– Integrated circuit fabrication facilities

– Computer rooms

– Clean rooms

NFPA 76, Section 8.5.3.1.2.3 Very Early Warning Fire Protection, calls for

sensors to be mounted at the return air location for a space in the

following instances.

(A) “Where stand-alone packed HVAC units are installed, sensors or

ports shall be installed where return air is brought back to the unit.”

(B)“Sensors or ports shall be installed such that each covers no

greater than 0.4 m²(4 ft²) of the return air opening.”

Agency Listings

The System Sensor 7251DH high sensitivity duct smoke detector is

designed to satisfy NFPA 76 for Very Early Warning Fire Protection.

S911

中文翻译

下载PDF

与7251DHA相关器件

型号	品牌	获取价格	描述	数据表
7252	GILWAY	获取价格	T-1 Subminiature Lamps
72520	MOLEX	获取价格	9.53mm (.375") Pitch Beau™ PCB Terminal Strip
72520-004H	AMPHENOL	获取价格	Board Stacking Connector, 4 Contact(s), 2 Row(s), Male, Straight, Solder Terminal
72520-004HLF	AMPHENOL	获取价格	Board Connector, LEAD FREE
72520-008H	AMPHENOL	获取价格	Board Stacking Connector, 8 Contact(s), 2 Row(s), Male, Straight, Solder Terminal
72520-010H	AMPHENOL	获取价格	Board Stacking Connector, 10 Contact(s), 2 Row(s), Male, Straight, Solder Terminal
72520-010HLF	AMPHENOL	获取价格	Board Connector, LEAD FREE
72520-014H	AMPHENOL	获取价格	Board Stacking Connector, 14 Contact(s), 2 Row(s), Male, Straight, Solder Terminal
72520-016H	AMPHENOL	获取价格	Board Stacking Connector, 16 Contact(s), 2 Row(s), Male, Straight, Solder Terminal
72520-016HLF	AMPHENOL	获取价格	Board Connector, LEAD FREE