前室压力控制器

电梯前室通常要求其空间内部气压高于外部气压 10~15pa ;而高层建筑前室(包括消防电梯前室、楼梯间前室、合用前室、三合一前室、共用前室等)要求是25~30pa，楼梯间要求是 40~50pa

通常要求其空间内部气压高于外部气压 10~15pa ;而高层建筑前室(包括消防电梯前室、楼梯间前室、合用前室、三合一前室、共用前室等)要求是25~30pa，楼梯间要求是 40~50pa

电梯前室压力传感器

当消防前室或楼梯间的通风压力或压差超过设定值（前室25~30pa,楼梯间40-50pa）时，working principle of itive pressure air supply pressure sensor: under normal circumstances, the itive pressure air supply fan pressurizes the air supply into the air shaft through the air duct (green arrow direction) , the compressed air is then sent to the front room/stairwell of each floor through the shutters/the air valve. when the ventilation pressure/pressure difference in the fire chamber/stairwell exceeds the set value (25 ~ 30 pa in the front chamber&40-50 pa in the stairwell) , the pressure sensor located on each floor immediately sends a signal to the by-pass pressure relief valve control box, the by-pass pressure relief valve control box opens the by-pass pressure relief valve according to the pressure

压力传感器

控制箱特点：

◆带一个绿色巡检指示灯，一个红色启动紧急信号指示灯；◆直接输出开关控制信号；◆供电及信号输出采用总线制传输；

the company spe---lizes in r & d&production, chamber pressure sensor, elevator chamber pressure sensor, pressure detector