| 摘要 |
<p>PURPOSE:To accomplish a measuring device for gas concentration etc. which is provided with excellent mobility, with no recorder required at the time of measuring, and with quick outputting to ensure high operating effectiveness by storing the data of measured concentration once in a memory, and outputting this data after the end of measurement with the output at time compressed. CONSTITUTION:A gas concentration sensing part 2 senses change of the gas concentration and gives an electric signal in compliance with the concentration. The result from sensing is A/D converted 5 at the output part 3, that is stored in a storage memory 4 on the time basis by a CPU 6. Further a recorder 8 is furnished which is driven by the analog output D/A converted 7 from the output part 3. This recorder 8 records changes of gas concentration corresponding to the measuring time in the form of a time chart. The user shall decide at this time how long time is used on the time chart for measurements, and the CPU 6 compresses accordingly the time and thereupon outputs the data. Thus the records of gas concentration measurements for a long time can be reproduced in a short time by making recording while the chart speed of the recorder 8 is heightened with this output.</p> |
