DEW-POINT HYGROMETER Russian patent published in 1998 - IPC

FIELD: equipment measuring humidity of gases. SUBSTANCE: propose dew-point hygrometer can be used to measure low values of dew point right under high pressures. Measurement chamber of hygrometer is fabricated in the form of longitudinal cylindrical passages arranged in symmetry and presenting condensation mirrors. One of passages is fitted with insert in the form of hollow cylinder made from material having less heat conduction than material of measurement chamber. Insert cavity is connected to outlet pipe-line of analyzed gas and collector. Hygrometer is also equipped with cooler, temperature-sensitive element, light source and photodetector. Reflector is set between light source and measurement chamber. Inspection glass is placed coaxially with measurement chamber. EFFECT: increased accuracy of measurement of dew point and decreased quantity of analyzed gas. 2 dwg