Product Overview

Wireless passive current temperature sensor is to realize the needs of intelligent and automatic low- voltage distribution network, comprehensive data acquisition and monitoring is necessary.Through real- time online monitoring of the temperature,current and voltage of cables and bus bars, early hidden dangers can be obtained to ensure the safety of users. The passive composite sensor uses the electromagnetic energy around the transmission line to obtain electric energy, online monitoring the temperature and current of the cable, combined with wireless communication, to complete fast and accurate online measurement and save the shackles of the cable, and realize the function of wireless data transmission. The product does not need external power supply and is maintenance free for life. It is suitable for on-line monitoring of temperature and current of transmission conductor in low voltage switchgear.The sensor is not in direct contact with the surface of the electrical equipment, and its built-in analog temperature sensor senses the ambient temperature of the contact surface and gets the corresponding voltage signal. According to the relationship between the voltage signal and non induction, the surface temperature of the live equipment can be determined. Non direct contact, electric field induction is used to detect whether the line is charged, and to detect whether the line is charged when there is no load and no current passing through.

Product Features

▪ Double power supply
The electromagnetic energy of AC power line is collected and converted into electrical energy to provide working power for the sensor. When the measured object through the AC current is greater than 0.5A,the sensor can start to work. Intelligent energy storage technology is used to store excess power to ensure the continuous operation of the sensor. If the current in the circuit is less than the starting current and the circuit is in power failure state, the standby battery in the sensor can be used to supply power to keep the sensor working normally.
▪ Data measurement and transmission
During the working period of the sensor, according to the set acquisition frequency,the surface temperature of the cable can be measured by the temperature sensor, and the current flowing through the cable can be measured by the current transformer, so as to realize the online monitoring of the cable temperature and current at the same time. At the same time, the sensor can automatically adjust the measurement time according to the amount of collected energy. The collected data is transmitted to the receiving device through 433MHz wireless link.

Scope of Application

Electrical fire monitring, current and voltage sensor equipment, fire equipment power module,fire leakage system, small current grounding system,electromagnetic relay protection, microcomputer protection, intelligent power, environmental monitoring,etc.

Performance Index

Outline and installation dimensions