Sensor ZS-04-75-3600 is a non-contact speed sensor designed for industrial rotating machinery. It uses magnetoelectric induction principle or Hall effect technology to monitor the speed change of turbine rotor in real time. The sensor has an IP67 protection level and can work stably in harsh environments with high temperature, high humidity and strong vibration, meeting the complex working conditions of power plants.

Core technical features

1. Accurate measurement

Using high-sensitivity probes and digital filtering technology, the resolution can reach ±1 RPM, and full-range linear output can be achieved to ensure the real-time and accuracy of speed data. The unique anti-electromagnetic interference design effectively avoids interference with the signal caused by the strong electromagnetic environment of the power plant.

2. Multiple protection design

- High temperature resistant shell: Made of special alloy material, it can work continuously at -40℃~150℃ ambient temperature

- Explosion-proof structure: Complies with ATEX/IECEx standards (if applicable), adapting to the flammable and explosive environment around the gas turbine

- Anti-seismic performance: Passed 10-2000Hz vibration test, can withstand 20g impact acceleration

3. Intelligent diagnostic function

Integrated self-test module, can monitor the health status of the sensor in real time, output fault code through 4-20mA analog signal or RS-485 digital interface, support seamless connection with DCS and PLC systems, and realize predictive maintenance.

In the turbine monitoring system, sensor ZS-04-75-3600 plays multiple core roles:

1. Safety protection

Real-time monitoring of overspeed risk, when the speed exceeds the set threshold, the protection system is immediately triggered to cut off the steam supply to avoid “flying” accidents. Statistics show that the installation of high-precision speed sensors can reduce the mechanical failure rate of steam turbines by 40%.

2. Energy efficiency optimization

By continuously collecting speed data, and building a multi-dimensional monitoring network with vibration sensors and temperature sensors, it helps operation and maintenance personnel to accurately adjust steam parameters so that the turbine always operates in the optimal efficiency range. The application case of a 1000MW unit shows that the thermal efficiency is improved by 0.8% after optimization, and the annual coal cost is saved by more than one million yuan.

3. Intelligent operation and maintenance

Supports integration with TDM (unit fault diagnosis system). Through speed fluctuation spectrum analysis, hidden dangers such as rotor dynamic imbalance and poor shaft alignment can be identified early. A power plant successfully warned of low-pressure rotor blade fracture failure through the sensor data, avoiding equipment losses of 100 million yuan.

Installation and maintenance

Adopt flange or threaded installation method, and the standard configuration includes anti-loosening locking device. The recommended installation distance is 1-3mm (need to be adjusted according to the magnetic resistance characteristics), and the probe surface is cleaned regularly to avoid oil adhesion. The modular design shortens the mean time to repair (MTTR) to less than 30 minutes, and supports online replacement without affecting the operation of the unit.

As the energy industry transforms towards efficiency, safety and intelligence, the sensor ZS-04-75-3600 continues to safeguard the safe operation of steam turbines with its excellent performance.

By the way, we have been supplying spare parts for power plants around the world for 20 years, and we have rich experience and hope to be of service to you. Looking forward to hearing from you. My contact information is as follows:

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