Temperature alarm,申请号US19890300160-传众专利搜索

Temperature alarm

申请公布号：US4864283(A)

申请号：US19890300160

申请日期：1989.01.23

申请公布日期：1989.09.05

申请人：

TANDEM COMPUTERS, INCORPORATED

发明人：SETO, KAN-CHIU

分类号：G01P1/10;G01P13/00

主分类号：G01P1/10

摘要：A temperature alarm includes a thermostat for actuating an audible alarm, a control panel-mounted LED and a circuit board-mounted LED. The audible alarm, once actuated by the thermostat, can be temporarily disabled by the user by actuating a disable timer connected to the audible alarm. After a period of time the timer times out to return control of the audible alarm to the thermostat. The panel LED is illuminated continuously while the chosen temperature value is exceeded. The circuit board LED is mounted to a circuit board within the equipment housing. Once illuminated by the thermostat, the circuit board LED remains actuated regardless of the temperature to provide an indication to a service technician that the chosen temperature was exceeded since the last servicing. The circuit board-LED, coupled to a latching relay also mounted to the circuit board, is extinguished by manually resetting the latching relay.