QC-2C-type air sampler double gas path

I. Overview QC-2C-type air sampler double gas path which is one or two in the air of harmful gases simultaneously sampled instruments. For environmental monitoring, health and epidemic prevention, prevention of occupational diseases, industrial gases collected, measured indoor environment, universities teaching, research, and other units capture the air of harmful gases. At the same time the samples were collected in two different harmful gases, but also balance collecting samples and two samples at different times. A liquid crystal display, menu operation, computer time, small size, light weight, easy operation, accurate timing, pumping large negative pressure regulating valve with needle valve mechanical adjustment, fine adjustment scale, good stability. Since the market by users pro-Lai. Second, the function 1, arbitrarily set the sampling time. 2, end of sampling stop. 3, shows the battery charge, voltage and charging process. 4, additional sampling time sampling halfway. Third, the technical parameters Operating voltage: DC12V (8 NiCd or NiMH rechargeable batteries) AC220V ± 10V 50Hz flow range: 0 ~ 1.0L / min × 2; 0 ~ 1.5L / min × 2; 0 ~ 3.0L / min × 2 three kinds of negative pressure suction:> 23500Pa [ie 160mm (Hg)] Flow accuracy: ± 2.5FS Stability: ≤5% Timing Accuracy: ≤ ± 0.1% Working noise: <55dB Ambient temperature: -5 to 40 ℃ Relative humidity: <95% Charge Current: 500mA continuous, intermittent operation time: 4 to 24 hours Dimensions: 205mm × 135mm × 115mm Instrument Weight: 1.8Kg Fourth, the working principle of QC-2C-type air sampler double gas path by the filters, valves, flow meters, suction pump, monitors, electronic control circuit, single chip. Figure, The instrument consists of two suction pump respectively to form an independent air system sampling, do not link to each other, the two gas path can gather a balanced sample. Also two different gas samples can be collected. Time is arbitrarily set by the 0 ~ 99.59 hours. The instrument consists of eight on the 2nd of nickel-cadmium batteries, when the battery voltage to charge the battery when the battery icon on the screen flashes, generally charging about 12 hours, fully charged battery can work for more than six hours. If the instrument is not a long time, every two months for equipment maintenance should be charged once, in order to ensure no damage to the rechargeable battery. Such as when using the AC charger plugged place special charge external power jack on the back of the instrument, the instrument automatically switches the internal DC AC power supply.