Double Air Road gas sampler, widely used in environmental monitoring, health departments, the workplace can be used for a variety of harmful gases collected and the dust concentration in workplace testing purposes. 


 QT-2A sampler is a double gas Way sampler, can be parallel to the sample, parallel to the sampling distance is less than 10mm. It has a large negative pressure ventilation, the flow stable. Instrument has an internal battery, and has regular automatic shutdown function, due to voltage indicator, battery charging and AC and DC. 
 Main Specifications: 
 1, flow range :0.1-1 .2L/min 
 2, the largest negative pressure ventilation: less than 20000pa 
 3, flow meter error: less than or equal to 2.5% 
 4, the time range :1-99 minutes 
 5, the timing error: less than 1 second / Time 
 6, Power supply: 6V/4AH 
 7, working hours: more than 8 hours 
 8, Dimensions: 100 * 170 * 120mm