浙江省永嘉县防爆机电厂和煤炭科学研究总院抚顺分院联合研制成功的国家“六五”攻关项目——FDZB-1型风电沼气闭锁装置,能可靠地实现风、电、沼气闭锁功能。它是杜绝掘进工作面瓦斯爆炸事故的一种新颖、实用、安全可靠的多功能瓦斯检测仪器,适用于各类沼气矿井。该装置的主要技术指标如下:测量范围:0～3％CH_4;测量误差:0～1％CH_4±0.05％CH_4,1～2％CH_4±0.1％CH_4,2～3％CH_4±0.15％CH_4;报警点:0.5％CH_4或1.0％CH_4,可选择:断电点及复电点;断电1.5％CH_4或1％CH_4可选择,复电 Yongjia County, Zhejiang Province, explosion-proof electrical power plant and Coal Research Institute Fushun branch jointly developed a successful national “Six Five” key project - DFZB-1 wind power biogas latching device, can reliably achieve the wind, electricity, biogas blocking function. It is a novel, practical, safe and reliable multi-purpose gas detection instrument which can eliminate gas explosion accident in tunneling and is suitable for all kinds of biogas mines. The main technical parameters of the device are as follows: Measurement range: 0 ~ 3% CH_4; Measurement error: 0 ~ 1% CH_4 ± 0.05% CH_4, 1 ~ 2% CH_4 ± 0.1% CH_4, 2 ~ 3% CH_4 ± 0.15% CH_4; Alarm points: 0.5% CH_4 or 1.0% CH_4, selectable: power off point and power point; power off 1.5% CH_4 or 1% CH_4 selectable,