| 摘要 |
<p>PURPOSE:To reduce the quantity of noise in the maximum sensitive operation and to perform a high stable recording by putting a resistance in series with the maximum voltage taking terminal of the voltage divider circuit connected with the noise removing CR time constant circuit. CONSTITUTION:An output signal of the detector 1 of the liquid chromatography devide is fed to the voltage divider circuit that consists of resistances R to 64R and many branch points, and is provided to the recorder 5 through the switching circuit 3, which selects the sensitivity, and the CR time constant circuit 4 which removes noise. When operated with the highest sensitivity, the switch 3 is set to the contact P128 connected to the maximum voltage taking terminal 10. To reduce the quantity of noise produced when measured in said state, a resistance R2 is inserted between the contact P128 and the maximum voltage taking termimal 10.</p> |
