| 摘要 |
PURPOSE:To facilitate the replacement of a detection cell unit and a heater unit, by mounting the detection unit, an introducing pipe for gas to be measured and the heater unit to a probe having a calibration gas introducing pipe in a freely detachable manner. CONSTITUTION:A detection cell 11 is adhered to the cell support pipe 5 inserted in a cylindrical probe 1 having a calibration gas introducing pipe 4 in an airtight manner. An introducing pipe 15 for gas to be measured is inserted in the cell support pipe 5 from the outside and flanges 3, 7, 13 are clamped by screws so as to make the support pipe 5 and the introducing pipe 15 freely detachable with respect to the probe 1. A heater support pipe 35 having an annular heater 33 fixed to the outer periphery thereof is adhered to the flange 29 clamped to the flange 27 provided to the leading end of the support metal fitting 21 inserted in the probe 1 from the base end side thereof by a screw. By this constitution, the replacement of a detection cell unit and a heater unit cell becomes easy. Further, by allowing calibration gas to flow through the cylindrical gap between the introducing pipe 15 for the gas to be measured and the cell support pipe 5, the calibration gas can be efficiently heated. |
