Working Principle

The wireless temperature transmitter consists of a battery, a power supply circuit, a single-chip microcomputer control main circuit MCU, a data acquisition and transmission circuit, a wireless communication circuit, an NFC interface circuit, an amplifier circuit, a liquid crystal display circuit, a PT100 temperature sensor, a housing, etc. Its working principle is that the change in the resistance value of the temperature signal collected by the temperature sensor is collected by the data acquisition circuit, the amplifier circuit amplifies the signal and processes it through the MCU circuit, and the data temperature is transmitted to the networked RTU through the wireless communication circuit for the operator in the main control room to record, and can also be displayed on the spot for the inspection personnel to record.

Technical Features

1. Intelligent compensation, low power consumption

The temperature transmitter uses the STM32 series 32-bit single-chip microcomputer, which has the advantages of low energy consumption, small size, compact structure, strong anti-interference ability, and temperature compensation function; the wireless temperature transmitter sensor uses the high-precision and high-stability PT100 model, through the high-reliability amplifier circuit and AD acquisition module, the temperature of the measured medium is transmitted to the RTU through the wireless communication module. Exquisite packaging technology and perfect assembly process ensure the excellent quality and high performance of the wireless temperature transmitter. The wireless temperature transmitter can form a huge wireless network, which can realize temperature monitoring of all monitoring points. The entire monitoring system has extremely high measurement accuracy and anti-interference ability.

2. Low application cost, convenient and fast

The ultra-low power consumption design of the wireless temperature transmitter prolongs the service life of the lithium battery, and does not require on-site wiring. It uses an energy-type ER26500/3.6V/9000 mAh low-temperature resistant lithium battery for power supply (continuous working time of more than 3a), which solves the problem of on-site wiring and saves the cost of materials used for previous construction wiring; the use of plug-in modular PCB board is convenient for later maintenance, and the maintenance cost is lower; the split sensor can replace the glass tube thermometer at any time without having to start a fire and re-drill the hole for construction, which is safe, environmentally friendly, energy-saving, and saves the cost of transformation; the clamp-type installation method can be clamped on the nearby pipe according to the on-site installation environment, and is not affected by the environment of the installation location, and is convenient and fast to install and maintain; the shell is made of aluminum alloy and ABS material, with a compact structure and small size, which not only ensures a fully sealed design, but also ensures smooth wireless communication. The shell has the characteristics of anti-ultraviolet, high and low temperature resistance, waterproof, moisture-proof, and dustproof.

3. Strong environmental adaptability and wide application range

The wireless temperature transmitter adopts a high and low temperature resistant sensor, which has been redesigned in structure. It adopts a high and low temperature resistant lithium battery for power supply, and a split installation method. After testing, the wireless temperature transmitter works stably at -40~85℃, and the data collection is normal, which greatly improves the operating conditions of the entire system, reduces system failures, reduces damage to the temperature transmitter caused by high and low temperatures, and extends the service life of the temperature transmitter. It is fully capable of operating in harsh environments of low and high temperature medium heat radiation. The main application areas are for field or supporting power supply environments that are inconvenient, such as oil, gas, heating and other energy pipelines for temperature detection. It is suitable for the transformation of old oilfield areas, unmanned oil collection and transportation remote monitoring environments such as metering valve groups, etc. The reliability and stability of the entire temperature monitoring system have been greatly improved.

4. Wireless communication, high installation and debugging efficiency

The original temperature transmitter has exposed cables that are easily damaged during installation. When it is modified, it is necessary to open a hole and start a fire, which poses a great safety hazard. The installation and debugging of the original temperature transmitter requires multiple people to cooperate in line calibration and joint debugging. The wireless and RFID communication functions in the wireless temperature transmitter solve the problem of fragile communication cables, and also solve the problems of high installation and maintenance costs in the later stage, and low installation and debugging efficiency. The embedded RFID circuit and external NFC can quickly read the setting address and other content, and one person can operate it, saving a lot of manual debugging costs; the site can be directly debugged through RFID communication, with high reliability, strong anti-interference ability, and high installation and debugging efficiency. The wireless temperature transmitter improves the debugging efficiency, reduces labor and material costs, reduces safety hazards, and improves product quality. The stability and safety of the entire system have been greatly improved.