Abstract: An industrial field real-time working condition radio alarm system, comprises a transmitting end (11) and a receiving end (12) carried a worker; the transmitting end (11) comprises a detector (101) to detect the current working condition, a transmitting end processor (102) to process an on-off signal sent by the detector (101), and a radio transmitter (103) to transmit an alarm signal to the receiving end (12) under the control of the transmitting end processor (102); the receiving end (12) comprises a radio receiver (105) to receive the alarm signal, a receiving end processor (106) to process the alarm signal sent by the radio receiver (105), and an alarm (107) to send an alarm under the control of the receiving end processor (106); the transmitting end processor (102) is connected to the detector (101) and the radio transmitter (103) respectively; and the receiving end processor (106) is connected to the radio receiver (105) and the alarm (107) respectively.

Abstract: An industrial field real-time working condition radio alarm system, comprises a transmitting end (11) and a receiving end (12) carried a worker; the transmitting end (11) comprises a detector (101) to detect the current working condition, a transmitting end processor (102) to process an on-off signal sent by the detector (101), and a radio transmitter (103) to transmit an alarm signal to the receiving end (12) under the control of the transmitting end processor (102); the receiving end (12) comprises a radio receiver (105) to receive the alarm signal, a receiving end processor (106) to process the alarm signal sent by the radio receiver (105), and an alarm (107) to send an alarm under the control of the receiving end processor (106); the transmitting end processor (102) is connected to the detector (101) and the radio transmitter (103) respectively; and the receiving end processor (106) is connected to the radio receiver (105) and the alarm (107) respectively.

Abstract: An integrated gas detector integrating with audible and visual alarms, comprising: an explosion-proof housing; a gas detection unit disposed in the explosion-proof housing and used for detecting the concentration of gas; and a signal transducing unit disposed in the explosion-proof housing and used for receiving and processing the signal indicating the concentration of gas from the gas detection unit. Wherein, the explosion-proof housing comprises a cylinder shaped upper cover (23) having an annular inward flange (231). The signal transducing unit and the gas detection unit are located at the two sides of the annular inward flange (231), and lean against the upper surface and the lower surface of the annular inward flange (231) respectively, and are connected detachably and fixedly to each other by a fastening device.