自1935年以来，FENWAL CONTROLS 设计和制造行业机构认可的关键控制产品。FENWAL为暖通空调、商业烹饪、医疗、房车、工业设备、消防和许多其他市场的原始设备制造商提供服务。通过广泛的分销商网络在全球范围内提供产品和技术支持。

KIDDE-FENWAL火焰探测器27121-20-450产品介绍

说明

DETECT-A-FIRE®（D-A-F）探测器是许多消防系统的“核心”部件。高度可靠的 D-A-F 已作为行业标准使用了 75 年以上。D-A-F 用于指示过热或起火状态。在绝大多数应用中，D-A-F 提供初始的热感测，用来启动洁净气体、CO₂、惰性气体、干/湿化学药剂或水等灭火系统。

D-A-F 探测器因采用“速率补偿”设计而被广泛认可。与传统定温型和差定温（升温速率）型探测器相比，D-A-F 的独特优势在于：无论火势增长速度如何，它都能准确感知周围空气温度，并在预设整定点启动系统。

定温探测器必须整体被加热到报警温度，在火势快速发展时可能出现响应滞后。差定温装置则是由环境温度上升速率触发，容易受到来自工艺烘炉等无害瞬时热气流的影响而产生误报。

D-A-F 探测器灵敏度的关键在于其结构设计（见图 1）。外壳采用快速膨胀合金制成，可快速跟随周围空气温度变化。内部支柱采用膨胀速度较慢的合金制成，被设计为抵抗热能吸收，并密封在外壳内部，因而对温度变化的响应较慢。

在慢速升温火灾中（图 2），外壳和支柱会一起被加热，到达整定温度时，探测器动作，触发报警或释放灭火剂。

瞬时热空气流（升温速率可达 40°F/分钟）可能会使外壳膨胀，但不会触发探测器。通过忽略短暂的热空气扰动，D-A-F 探测器几乎消除了差定温装置常见的误报警。

如果发生快速升温火灾（图 3），外壳会迅速膨胀，内部支柱将闭合，触发报警和/或释放灭火剂。火势增长越快，D-A-F 探测器响应越早。

特性

• 可重复使用——自复位，无需更换，可测试

• 通用性强——可提供多种温度整定点

• 结构坚固——不锈钢外壳，寿命长

• 经济——允许较大安装间距，降低安装成本

• 出厂预设整定温度

• 内部触点区域在不锈钢外壳内实现气密封装

• 符合 RoHS 要求

应用

• 学校、工厂、办公楼、图书馆及其他非住宅建筑的防护

• 发电设施

• 加油站岛位区域

• 喷漆房

• 厨房排烟罩/灶台罩

• 发动机舱/发动机舱室

DESCRIPTION

DETECT-A-FIRE® (D-A-F) detectors are the "heart" of many fire protection systems. The highly reliable D-A-F has been the standard for over 75 years. The D-A-F is used for signaling overheat or fire conditions. In the vast majority of applications, the D-A-F provides the initial heat sensing that is used to activate suppression systems using clean agent, CO2, inert gases, wet or dry chemicals or water.

D-A-F detectors are widely accepted, because they are designed with rate compensation. This provides a unique advantage over both fixed temperature and rate-of-rise types of detectors because the D-A-F detector accurately senses the surrounding air temperature regardless of the fire growth rate. At the pre-determined set point, the system is activated.

Fixed temperature detectors must be completely heated to alarm temperature and therefore a lag in response time may occur with a fast rate fire. Rate-of-rise devices, on the other hand, are triggered by the rate of increase in ambient temperature and are subject to false alarms caused by harmless, transient thermal gradients such as the rush of warm air from process ovens.

The key to the detector's sensitivity is in the design (Figure 1). The outer shell is made of a rapidly expanding alloy which closely follows changes in surrounding air temperature. The inner struts are made of a slower expanding alloy. Designed to resist thermal energy absorption and sealed inside the shell, the struts follow temperature changes more slowly.

A slow rate fire (Figure 2) will heat the shell and struts together. At the "set point", the detector will trigger, actuating the alarm or releasing the extinguishant.

A transient rush of warm air up to 40°F/min. may expand the shell, while not triggering the detector. By ignoring transient warm air excursions, the D-A-F detector virtually eliminates false alarms prevalent with rate-of-rise devices.

If a fast rate fire (Figure 3) starts, the shell will expand rapidly. The struts will close, actuating the alarm and/or releasing the agent. The faster the fire rate of growth, the sooner the D-A-F detector will react.

FEATURES

• Repeatable - self-restoring, nothing to replace, testable

• Versatile - various temperature settings available

• Durable - long lasting stainless steel shell

• Economical - wide spacings reduce installation costs

• Factory set

• Internal contact area hermetically sealed in stainless steel shell

• ROHS Compliant

APPLICATIONS

• Protection of schools, factories, offices, libraries,

or other non-residential buildings

• Power generation

• Gas station islands

• Paint spray booths

• Range hoods

• Engine compartments

KIDDE-FENWAL火焰探测器其他常用型号：

KIDDE-FENWAL 27121-0-140

KIDDE-FENWAL 27121-0-160

KIDDE-FENWAL 27121-0-190

KIDDE-FENWAL 27121-0-210

KIDDE-FENWAL 27121-20-450

KIDDE-FENWAL 27121-0-275

KIDDE-FENWAL 27121-0-325

KIDDE-FENWAL 27121-0-360

KIDDE-FENWAL 27121-0-450

KIDDE-FENWAL 27121-0-500

KIDDE-FENWAL 27121-0-600

KIDDE-FENWAL 27121-0⁻⁷25

KIDDE-FENWAL FIRE / OVERHEAT DETECTOR NEW + ORIGINAL+ ONE YEAR WARRANTY

爱泽工业成立于2010年，定位于向制造工业提供制造技术和设备。代理经营世界优质的电气自动化、机械与传动、流体控制、仪器仪表、工具等产品。作为电气，液压以及气动解决方案的合作伙伴，我们利用我们的全球协作团队，为客户提供解决方案，市场知识以及相关增值服务来帮助优化客户的工作效率，提高可靠性和安全性，于成为工业产品和解决方案的优质渠道。

如果有任何关于KIDDE-FENWAL火焰探测器27121-0-210的疑问，请随时与我们沟通（021-31006702）。我们将尽解决您的问题。

If you have any question for KIDDE-FENWAL products, please feel free to dial 0086-21-3100 6702/ send request email to sales@ize-industries.com / browse our website:www.ize-industries.com.

KIDDE-FENWAL火焰探测器27121-0-210技术参数及介绍