ANALYZER OF VAPORS AND GASES Russian patent published in 1998 - IPC

FIELD: measurement technology. SUBSTANCE: analyzer of vapors and gases incorporates gas passage and measurement device. Gas passage is composed of absorbent filter with sorbent, switch of gas flows, chamber housing piezoresonance sensor in the form of quartz resonator with sorption coat on electrodes and flow rate booster connected in series. Measurement device incorporates measurement generator, unit measuring changes of generator frequency and control unit which outputs are connected to control inputs of flow rate booster, switch of gas flows and measurement device. Output of measurement generator is connected to electrodes of quartz resonator. Sorbent selective with regard to determined substance is used in the capacity of sorbent of absorbent filter. Sorbents and sensors are chosen from one or different classes of compounds. EFFECT: enhanced accuracy of analysis thanks to usage of selective sorbent. 4 cl, 3 dwg, 1 tbl