| 摘要 |
PURPOSE:To easily and accurately measure differential pressure in an arbitrary measuring position. CONSTITUTION:An outdoor machine 2 consisting of an outdoor pressure measuring part 5 and a transmission part 6 is arranged outdoors and an indoor machine 10 consisting of an indoor pressure measuring part 12, a receiving part 13, an operational control part 17 and a display part 16 is arranged indoors. The outdoor pressure measured by the outdoor machine is transmitted to the indoor machine as outdoor pressure data DAT 1 by a radio system and the indoor machine measures indoor pressure as indoor pressure data DAT 2 and differential pressure data DAT 3 and statistic data DAT 4 are calculated on the basis of the pressure data DAT 1, DAT 2 by the operational control part of the indoor machine to be displayed on the display part. |
