< Topic >The internal pressure display system of the room which can make accurate value display concerning the internal pressure of the room, in the position where it differs from the room, and the room, is offered.SolutionsAs for internal pressure display system 10 of the room, it possesses the telephone machine 14 which is provided in the multiple receivers 13 which are provided in multiple rooms 11 and supervisory section 12. Each receiver 13, the minute differential manometer, has the receiver side control section, and receiver side indicatory department 25. Telephone machine 14, has the telephone machine side control section, and telephone machine side indicatory department 33. Incorporating the measurement value of the minute differential manometer, it treats the receiver side control section, makes in receiver side indicatory department display 25. As the telephone machine side control section transmitting request to sequence vis-a-vis each receiver side control section, when there is response from the receiver side control section of correspondence, receives treatment value, when there was no response from the receiver side control section of correspondence, skips the reception of treatment value from the receiver side control section of correspondence, reception value is made to display in telephone machine side indicatory department 33.< Choice figure >Drawing 1【課題】部屋の内圧について、部屋、及び部屋と異なる位置において、正確な値を表示させることができる部屋の内圧表示システムを提供する。【解決手段】部屋の内圧表示システム10は、複数の部屋11に設けられた複数の子機13及び監視部12に設けられた親機14を有する。各子機13は、微差圧計、子機側制御部、及び子機側表示部25を備える。親機14は、親機側制御部、及び親機側表示部33を備える。子機側制御部は、微差圧計の計測値を取り込んで処理し、子機側表示部25に表示させる。親機側制御部は、各子機側制御部に対してリクエストを順に送信して、対応の子機側制御部から応答があった場合、処理値を受信し、対応の子機側制御部からの応答がなかった場合、対応の子機側制御部からの処理値の受信をスキップするとともに、受信値を親機側表示部33に表示させる。【選択図】図1
