To provide a calculation method of relative sensitivity capable of simply obtaining the relative sensitivity of a VOC gas with respect to a standard gas such as CH4 or C3H8 in relation to a gas concentration measuring instrument using FID.
A VOC liquid is injected in an evaporator to form the VOC gas, the VOC gas is introduced into FID 5, which is elapsed through the calibration due to the standard gas, at any time by a carrier gas 2a controllable in its flow rate, the concentration of the introduced VOC gas is measured at any time by the FID 5, the first average concentration related to the VOC gas is obtained by taking the arithmetic means of the measured concentration over a predetermined period and the first average concentration is divided by the reference average concentration corresponding to the predetermined period obtained by a separate means to calculate the relative sensitivity.
SANO KANJI
HATANI SHINJI
| JP2002195991A | 2002-07-10 | |||
| JP2005265810A | 2005-09-29 | |||
| JP2005221341A | 2005-08-18 | |||
| JPS53132397A | 1978-11-18 | |||
| JP2003315216A | 2003-11-06 | |||
| JP2005326272A | 2005-11-24 |
Next Patent: NAVIGATION APPARATUS AND METHOD