| 摘要 |
PURPOSE:To facilitate adjustment, by a method wherein a device provides with an adjuster, which adjusts an input voltage of a comparison amplifier to a 0 volt, an adjuster which adjusts the output of the comparison amplifier to a level to be measured, and a sensitivity adjuster which adjusts so that a level changing an object to be measured and the output are proportioned to each other. CONSTITUTION:A level measuring device incorporates a pulse generator PG, a detecting circuit DC, a double-shielded lead cable RC1, amplifiers A1, A2, A3, and the like. Additionally, the measuring device provides with an adjuster VR1 which adjusts the input voltage of the amplifier A3 to a 0 volt, a sensitivity adjuster VR2 which adjusts so that a change in a level of an object to be measured and the output are proportioned to each other, and an adjuster VR3 which adjusts the output of the sensitivity of the comparison amplifier A3 to the level of the object to be measured when the input of the comparison amplifier A3 is adjusted to a 0 volt, and the like. This constitution permits the facilitation of the adjustment of a 0 point by means of a 0 point adjusting circuit and of the level adjustment of the current amount of the object to be measured. |
