First, an overview 
 Double Air Road, gas sampler, widely used in environmental monitoring and health departments, can be used for a variety of harmful gases collected workplace and workplace dust concentrations measured for use. 
 JT20-TQ-1000 is a JT20-TDP-1000 type of upgrade alternatives, the instrument light weight, small size, charge protection, sampling flow pulsation, load capacity, flow stability, simple operation, safe, reliable, easy to carry. 
 1 use of the environment 
 a. Storage temperature: -40 ℃ ~ 55 ℃ 
 b. Operating temperature:-50oC ~ 40 ℃ 
 c. Relative humidity: ≤ 95% 
 d. atmospheric pressure: 80KPa ~ 110KPa 
 Technical characteristics 
 1, the main technical indicators 
 1) The sample flow rate: 0.1 ~ 1.5 L / min 
 (Optional: 20 ~ 500ml/min and 0.1 ~ 2.0L/min) 
 2) Load capacity:> 23000Pa 
 3) flow stability: ≤ ± 5% 
 4) Timing range: 0 to 99 minutes to an arbitrary set 
 5) continuous working time: 4 to 8 hours 
 6) Working noise: ≤ 55dB (A) 
 7) Power supply: Ni-MH2.0A / H × 6-cell NiMH battery pack, the highest open-circuit voltage ≤ 8.4V, the maximum short-circuit current ≤ 3.5 A 
 8) The error: plus or minus 2.5% 

 Fourth, the size and weight 
 1, Dimension: 180 × 116 × 100 (mm) 
 2, instrument quality: 1.3 Kg