Wireless temperature online monitoring system
The wireless temperature sensor is used to measure the temperature of the surface or contact of high-voltage live objects, such as the operating temperature of exposed contacts in high-voltage switch cabinets, busbar connections, outdoor switches and transformers. The wireless temperature sensor is composed of a temperature sensor, signal conditioning and amplification, logic control circuit, wireless modulation interface, etc. (as shown in the figure below). The sensor sends the collected temperature signal to the wireless temperature monitor via the wireless network.
Wireless frequency 433MHz
Manage the number of wireless sensors ≤120
Communication interface RS485 communication interface, communication distance ≤1200m (without relay)
Host network number ≤128
Communication protocol Modbus protocol "Wireless temperature measurement system communication protocol"
Baud rate 9600
Alarm default parameters:
Temperature alarm value Upper limit: +90℃, lower limit: -20℃
Temperature alarm value Upper limit: +60℃, lower limit: -10℃
Working voltage: DC 5V
Whole machine power consumption: ≤5VA
Working temperature: -10℃~+70℃
Working humidity: ≤90%RH, non-condensing, non-corrosive