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GB50974-2014标准11.0.4还规定了直接启动消防泵的信号是流量开关和压力开关，其原因是可靠性高。水流指示器可靠性差；误动作几率高；高位水箱水位信号有滞后现象；该信号仅可以作为报警信号。条文规定流量开关和压力开关作消防泵的直接启泵信号，流量开关设置在一定流量值范围内，当高位水箱水位降至一定压力时，由压力开关辅助启动，这样能实现直接启泵双保险。亦可实现互锁。为实现减少误动作，流量开关和压力开关（当火警时水箱内水位或稳压泵不能支持消防用水量时，高位水箱出水管压力下降设定值时，压力开关动作）同时动作作为直接启泵的可靠措施。流量开关和压力开关通常设置在高位水箱的出水管上，流量开关先动作，压力开关后动作，实现直接启泵的双保险，由此应设置“高位水箱流量控制直启消防泵装置”
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武汉万维博帆电子有限公司
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<span>联系电话：</span>027-87616663 <span>，</span><span>87598630</span>
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<span>手机：</span>15342281800      QQ<span>：</span><span>29047664</span>
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<span>公司网址：</span>www.www027.com
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<span>消防系统流量开关</span> 式流量开关 <span>型号</span>FR-DT10
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<span>消防系统流量开关</span> <span>电子管段式流量开关</span> <span>型号</span>FR-DT10F
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<span>消防流量开关</span> <span>式流量开关</span> <span>流量传感器</span> <span>型号</span>LZ-01
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<span>消防水泵流量开关</span> <span>不锈钢流量开关</span> <span>型号</span>LZ-01
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<span>消防验收流量开关</span> <span>经济型水流开关</span> <span>型号</span>RZ-90
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<span>消防高位水箱流量开关</span> <span>靶式流量开关</span> <span>型号</span>LKB
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<span>消防高位水箱压力开关</span> <span>压力控制器</span> <span>型号</span>FR-YL
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<span>消防系统压差开关</span> <span>差压变送器</span> <span>型号</span>FR-YC
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<span>消防水泵压力开关</span> <span>数显压力控制器</span> <span>型号</span>FR-YK
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<span>消防系统压力变送器</span> <span>压力传感器</span>  <span>型号</span>FR-TL-G
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<span>消防高位水箱流量计</span> <span>智能流量计</span> <span>电磁流量计</span> <span>型号</span>FR-EDC
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<span>消防流量计</span> <span>椭圆齿轮流量计</span> <span>智能流量计</span> <span>型号</span>FRLC
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<span>消防验收流量计</span> <span>转子流量计</span> <span>型号</span>FRLZB
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<span>消防新规范流量计</span> <span>浮子流量计</span>  <span>型号</span>FRLZS
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<span>消防出水口水流指示器</span> <span>流量观察器</span>  <span>型号</span>FR-ZXY
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<span>消防管道流量指示器</span> <span>法兰式水流指示器</span> <span>型号</span>FR-ZXYF
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<span>消防验收不锈钢液位开关</span> <span>不锈钢液位浮球开关</span>  <span>型号</span>FRFQ
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<span>电磁阀</span> <span>美国派克电磁阀</span> <span>气动元件</span>  PHS520全系列 PHS510全系列 PHS530全系列
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PHS540全系列
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