摘要:
An analytical device includes a heat output portion for heating an interior of a housing with which an analyzing portion is surrounded; a first temperature sensor for measuring a temperature of the analyzing portion; a second temperature sensor for measuring a temperature of an interior of the housing; and a control portion. The control portion determines a setting value of the temperature in the housing according to a transfer function of a PID control based on a difference between a preset temperature of the analyzing portion and the temperature measured by the first temperature sensor. Further, the control portion determines an output value of the heat output portion according to a transfer function of PID control based on a difference between the setting value of the temperature in the housing and the temperature measured by the second temperature sensor.
摘要:
A moving body track indicating system for displaying the track of a moving body along with latitude and longitude line markers and cursors on an indicating device such as a cathode-ray tube. The displayed pattern can be automatically magnified or reduced and shifted to a desired position. Cursor markers are displayed parallel to the latitude and longitude line markers with identifying symbols displayed along with the cursor markers. A reference point is automatically readjusted wherein the moving body, a ship in the preferred embodiment, moves beyond the edge of the display surface.
摘要:
In a mass analysis data analyzing apparatus, centroid data is used as mass spectrum data to be analyzed. First, peaks on the centroid data are specified in order of intensity as a standard peak for identifying an isotopic cluster. The isotopic cluster is detected by comparing an emerging pattern of peaks near the standard peak and an emerging pattern of peaks of an expected isotopic cluster in the case where each valence is assumed. The valence of the determined isotopic cluster is set as the valence of the peaks belonging to the isotopic cluster, and the peak at the forefront of cluster is selected as a monoisotopic peak. With such a mass analysis data analyzing apparatus, it is possible to determine the valence of each peak and identify the monoisotopic peak in a mass spectrum.
摘要:
A residual liquid quantity in a syringe is reduced to the minimum. There are detected with high precision malfunctions due to chokes in pipes and incomplete switchings of an electromagnetic valve and a broken valve without a contamination problem produced. When a syringe pump is powered on, a motor is driven at low speed so that liquid in a syringe is discharged completely. When a desynchronization of the motor is detected by comparing motor driving pulses obtained by a rotary encoder with motor driving pulses supplied to the motor, a stop signal is supplied to a motor driver and the position of a rod is memorized as the origin of the syringe pump in an origin sensor. While the syringe pump is in a normal operating state, the position of the rod is detected to be at the origin to supply a stop signal to the motor driver.
摘要:
A flame atomic absorption spectrophotometer in which a combustion gas is burned by a burner to form a flame and a nebulized sample is atomized in the flame, including a flashback detector for detecting an occurrence of a flashback phenomenon of the flame or detecting a state in which a flashback phenomenon is considered to have occurred; a flashback count memory for counting detection of a flashback by the flashback detector and storing a number of count; an ignition inhibitor for inhibiting, in a case where a flashback is detected by the flashback detector, an ignition after the detection; and an inhibition canceller for canceling, in an ignition inhibit state created by the ignition inhibitor, the ignition inhibit state only by a predetermined operation which is changed in accordance with the number of count stored in the flashback count memory.
摘要:
The present invention has been accomplished to provide an atomic absorption spectrophotometer capable of obtaining measurement data always in the state where the lowest detection limit performance is optimized, without depending on the frequency of the power supply. In a control program which runs on the microcomputer chip 42 mounted on the atomic absorption spectrophotometer 110, a plurality of lighting periods of the light sources 11 and 12 and extraction periods of the sampling data are memorized, whose lowest detection limit performance are optimized for the frequencies (50 Hz and 60 Hz) of the AC power source for driving the AC motor 22. In using the apparatus, by the control program, the frequency of the power source used in this apparatus is identified, the lighting period and sampling data extraction period corresponding to the identified frequency and the measurement mode that a user of the apparatus has previously set are selected from among a plurality of memorized values, and the appropriate lighting period is set to the hardware (PLD 43). Accordingly, without depending on the frequency, it is possible to obtain measurement data always in the state where the lowest detection limit performance is optimized.
摘要:
A solid-state NMR sample tube and method of using same which can be spun stably and at high speed while suppressing its bending resonance. A solid sample to be investigated by solid-state NMR spectroscopy can be sealed in the sample tube. The sample tube includes a hollow cylinder having opposite ends. At least one of the ends is open. The sample tube has a length L, an outside diameter D, and an inside diameter d which satisfy a given relationship disclosed herein.
摘要:
In a mass analysis data analyzing apparatus, centroid data is used as mass spectrum data to be analyzed. First, peaks on the centroid data are specified in order of intensity as a standard peak for identifying an isotopic cluster. The isotopic cluster is detected by comparing an emerging pattern of peaks near the standard peak and an emerging pattern of peaks of an expected isotopic cluster in the case where each valence is assumed. The valence of the determined isotopic cluster is set as the valence of the peaks belonging to the isotopic cluster, and the peak at the forefront of cluster is selected as a monoisotopic peak. With such a mass analysis data analyzing apparatus, it is possible to determine the valence of each peak and identify the monoisotopic peak in a mass spectrum.
摘要:
The present invention discloses a sample tube for the magic angle high-speed rotation method used in a solid nuclear magnetic resonance device probe wherein a radio wave irradiation/detection coil is disposed close to a sample and a method of measuring a high resolution nuclear magnetic resonance absorption spectrum using the same. This tube is suitable for solid nuclear magnetic resonance (solid NMR) measurements of minute amounts of sample. The sample tube has a capillary part filled with a sample and non-capillary parts situated at its two ends, and a spinner which can be detachably inserted into at least one of the outer ends of the non-capillary parts. The capillary part and non-capillary parts are made of a ceramic and/or polymer material.
摘要:
The present invention discloses a sample tube for the magic angle high-speed rotation method used in a solid nuclear magnetic resonance device probe wherein a radio wave irradiation/detection coil is disposed close to a sample and a method of measuring a high resolution nuclear magnetic resonance absorption spectrum using the same. This tube is suitable for solid nuclear magnetic resonance (solid NMR) measurements of minute amounts of sample. The sample tube has a capillary part filled with a sample and non-capillary parts situated at its two ends, and a spinner which can be detachably inserted into at least one of the outer ends of the non-capillary parts. The capillary part and non-capillary parts are made of a ceramic and/or polymer material.