火灾探测器间距计算器
房间或走廊的探测器间距及数量。
Reads NZS 4512:2010. Tables checked 26 Sept 2026.
尝试一个工程 6
每项工作都会预填示例数值。请替换为您自己的数值。
- Space smoke detectors in an officeThe number of point smoke detectors for a 24 by 9 m office.
- Space heat detectors in a kitchenThe number of point heat detectors for a 6 by 5 m kitchen.
- Space smoke detectors in a corridorThe detectors for a 30 by 1.8 m corridor.
- Space detectors under deep beamsThe count with 400 mm beams at 1.2 m centres.
- Space beam detectors in a warehouseThe beam smoke detectors for a 60 by 30 m warehouse.
- Space line heat detection in a car parkThe runs of line heat detection for a 40 by 16 m bay.
输入
使用默认输入值的示例计算。
- 探测器类型
- 点式烟雾探测器
- 房间长度
- 20 m
- 房间宽度
- 12 m
- 走廊
- 否
- 天花板上的梁或龙骨
- 否
探测器、线型或光束式
4
- 纵向间距
- 10m
- 横向间距
- 10m
- 距墙最大距离
- 5m
- 布局中采用的距墙距离
- 5m
- 探测器、线型或光束式的距离限制
- 7m
- 此布局所留的最差距离
- 7.07m
- 网格
- 2 × 2
- 地面面积
- 240m²
此结果仅供设计参考。请对照现行标准进行核验。
计算步骤
- 沿房间的间距10m
NZS 4512:2010 Cl 405.3
- 横跨房间的间距10m
NZS 4512:2010 Cl 405.3
- 距墙最大距离5m
NZS 4512:2010 Cl 405.3
- 布局中采用的距墙距离5m
NZS 4512:2010 Cl 405.3
- 探测器、线型或光束式的距离限制7m
NZS 4512:2010 Cl 405.3
- 此布局所留的最差距离7.07m
NZS 4512:2010 Cl 405.3
- 楼面面积240m²
- 探测器、线型或光束式结果4
NZS 4512:2010 Cl 405.3
- 距坡屋顶顶点的距离500mm
NZS 4512:2010 Cl 405.3
关于此计算器
How this is calculated
The tool lays out fire detectors in a rectangular room or a corridor. It reads NZS 4512:2010 Clause 405.3 for point heat, line heat, point smoke and beam smoke detectors.
- Spacing. The tool reads the spacing for the detector type along and across the room.
- Wall distance. It reads the greatest distance from a wall. It uses that as the setback in the layout.
- Grid. It divides each room side by the spacing and rounds up. That gives the grid.
- Count. It multiplies the two grid numbers. The result is the number of detectors, lines or beams.
- Worst distance. It finds the point furthest from any detector. It compares that distance with the limit in Cl 405.3.
- Sloping roof. The tool gives the distance from the apex of a sloping roof.
Cl 405.2.1 keeps a detector at least 200 mm from a wall or partition.
Worked example
- Room of 20 m by 12 m with point smoke detectors. The grid is 2 by 2, so the tool gives 4 detectors. Spacing is 10 m both ways. The worst distance is 7.07 m against a 7 m limit. The tool warns, and asks you to reduce the spacing.
Limits
The tool does not check ceiling height or obstructions. It does not place detectors in voids. NZS 4512:2021 supersedes the 2010 edition. Check the current edition before you rely on a layout.
See also: Sounder level calculator, Fire alarm cabling and Fire alarm battery.
问题
结果仅供设计参考。请依据现行标准核对。
探测器间距工具有什么作用？
工具报告探测器之间的间距；条款有规定时，还报告距墙的最大距离；以及房间或走廊的网格和数量。对于点式感温探测器，它还适用每 30 平方米地面面积设置一只探测器的覆盖规则。
烟感和感温探测器的间距是多少？
NZS 4512:2010 Clause 405.3 规定：点式感温探测器间距 6 m，距墙 3 m；走廊中为 9 m 和 4.5 m。点式烟感探测器间距 10 m，距墙 5 m。烟束探测器间距 14 m。线型感温探测器间距 8 m。
为何工具提示间距不符合 7 m 规则？
Clause 405.3.3 规定点式感烟探测器之间的间距为 10 m，距墙为 5 m，并要求每个点位都在探测器 7 m 范围内。满 10 m 网格会使角部距探测器 7.072 m，因此 AmpSize 会测量布局，并提示您收紧间距。
梁和搁栅如何改变布局？
Clause 405.2.1(m) 规定，梁深 100 mm 或以上时，跨梁间距减至三分之二。梁深超过 460 mm 且间距超过 2400 mm 时，每根梁起到墙的作用。此时，每个开间内仍采用正常间距。
一个区域最大可以多大？
AmpSize 将楼面面积与 NZS 4512:2010 Clause 401.2.3 中 750 平方米的分区限值进行比较，面积超出时予以警告。该条款中有四种情况可将限值提高至 900 或 2000 平方米。请阅读该条款并逐项核对。
本工具读取的条款和表格
- NZS 4512:2010 Cl 401.2.3Zone area
- NZS 4512:2010 Cl 405.2.1Detector distance from a wall
- NZS 4512:2010 Cl 405.2.1(j), (l) and (m)Detector position, wall minimum and beams
- NZS 4512:2010 Cl 405.3Detector spacing
- Cl 405.3Detector spacing, wall distance and coverage
表格最后核对于 26 Sept 2026。
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有问题，或数值看起来有误？联系我们。