Fire Detection, Heat-Actuated

Heat sensitive devices may be either "spot" or "line" type and operate at a fixed temperature or on a rapid increase in

temperature (rate-of-rise). Some detectors combine the fixed and rate sensitive principles.

The spacing guides listed are indicative of each detector"s relative sensitivity and, in each case, the spacing guide is the

maximum recommended separation between detectors for smooth-ceiling installations. For a given temperature rating, a

fixed-temperature detector which has a 30 ft (9 m) listing and one which has a 15 ft (5 m) listing will both respond at

approximately the same time to a geometrically growing fire if each is installed at its listed spacing. FM Approved rate-of-rise

detectors all have 30 ft (9 m) listed spacings, the maximum separation recommended by FM Approvals.

Installation of heat detectors at less than maximum spacing is necessary: to achieve earlier response; to compensate for ceiling

obstructions such as beams and joists; and to compensate for ceiling heights greater than 15 ft (5 m). Proper location and use of

heat detectors involves consideration of ceiling construction, the location of partitions, the maximum normal room temperature,

heat produced by the occupancy, and whether detector function is to warn occupants or to automatically actuate protection

H8040 LHD供应商_正宗火警探测、报警设备供应厂家-上海道夫自动化仪表工程有限公司

equipment. Refer to Standard 72-1993 of the

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PHSC-356-EPC感温电缆制造商_电线电缆相关-上海道夫自动化仪表工程有限公司
　　“方宝”牌防爆工具1986年通过省级鉴定，具有机械强度高，经摩擦撞击不产生火花的特性。公司生产的防爆工具有高硬铝青铜和铍青铜两大系列，1000多个规格。产品标准采用国标GB10686-10693-89。由国家轻工业防爆工具质量监督检测中心监测。高硬铝青铜硬度HRC>25，原装进口CTI-155X缆式线型感温火灾探测器生产厂家,正宗火警探测、报警设备感温报警器，防爆级别为Ⅱ类B级。铍青铜硬度HRC>35，原装进口CTI-155X缆式线型感温火灾探测器生产厂家,智能感温探测器相关，防爆级别为Ⅱ类C类。该工具广泛适用于石油、化工、船舶、矿山、天然气、液化气、制药、储运、制气、植物油等行业，是所有易燃易爆场所理想的安全工具。 　　半个多世纪以来，赛多利斯工业技术一直在不断创新和改进称量技术，始终走在称量技术发展的最前沿。目前，赛多利斯工业称重产品遍布各个领域，既有在欧莱雅洗发香波生产线上，相对精度达到20万分之一的配料系统，也有单只量程高达500吨的柱式传感器——被BASF公司用在世界各地的巨型料仓上;既有用于诺华制药疫苗生产线上最高洁净环境、满足卫生设计要求的IF不锈钢超薄台秤;也有随Jules Verne号运载火箭进入国际空间站的防爆工业秤和传感器。