| 摘要 |
PURPOSE:To automate humidity control by inputting a humidity control signal having the magnitude corresponding to the difference between the output of a hygrometer of a constant humidity tank and preset value of humidity to a humidifier and selectively operating and stopping a dehumidifier with a dehumidification control signal changed according to the magnitude of this signal. CONSTITUTION:A humidity controller 6 is connected with a hygrometer 5 and a humidifier 7 incorporated in a thermostatic constant humidity tank 1. This humidity controller 6 processes the preset value of humidity and the output of the hygrometer 5 and a applies a humidity control signal Ph having the required magnitude to the humidifier 7. Further the humidity controller 6 and a dehumidifier 8 are connected with a dehumidification control means 12 and, in this case, a dehumidification control signal D consisting of driving signals D1, D2 is inputted to the dehumidifier 8 from the dehumidification control means 12 in accordance with the magnitude of the humidity control signal Ph output from the humidity controller 6. In other words, the driving signals D1, D2 are impressed to the electric source circuits of a plurality of refrigerating dehumidifiers 8a, 8b and these dehumidifiers 8a, 8b are selectively operated and stopped to control dehumidifying operation.
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