Metrological verification device for ammonia gas detector and metrological verification method thereof

The invention relates to a metrological verification device for ammonia gas detector and a metrological verification method thereof. The verification device comprises a gas chamber for standard gas concentration to be measured. The gas chamber for standard gas concentration to be measured is respectively provided with a pure ammonia gas inlet, an ammonia gas inlet and a pure air inlet. The gas chamber for standard gas concentration to be measured is respectively connected to a flowmeter and a bypass flowmeter. The flowmeter is connected to an instrument for detection. The bypass flowmeter is connected to a vent nozzle. By the metrological verification device, various quantity-value transferring detection projects of an ammonia gas detector in the JJG1105-2015 'Ammonia Gas Detector' can be greatly completed. 本发明涉及种氨气检测仪计量检定装置及其计量检定方法，检定装置包括待测浓度标准气气室，待测浓度标准气气室上分别设有氨气纯气入口、氮气入口和纯净空气入口，待测浓度标准气气室分别与流量计和旁通流量计相连接，流量计与备检仪器相连接，旁通流量计与放空口相连接。其能够很好的完成JJG1105-2015《氨气检测仪》中对氨气检测仪的各种量值传递的检测项目。