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XDG3272 Travel Monitor

XDG3272 Travel Monitor

Steam turbine cylinder expansion, valve position opening and oil level of oil tank shall be monitored and protected.


The displacement monitor is a set of highly reliable monitoring and protection instruments, equipped with TD-2 series linear differential transformer-type displacement sensor (LVDT), used for continuous monitoring and measurement of steam turbine cylinder expansion, and has local indication and remote transmission functions. It is equipped with TDZ-1 and TD-1 series linear differential transformer displacement sensors (LVDT), which mainly monitors the valve position opening of steam turbine. It is equipped with UT-81 series linear differential transformer-type displacement sensor (LVDT), which is mainly used for monitoring and indicating the oil level of the turbine oil tank, and has the functions of local indication and remote transmission. The instrument is equipped with 4~20mA current, relay switching output, RS485 interface MODBUS-RTU communication protocol, which can easily form an automatic control system and monitoring protection system with DCS, PLC, PC, etc; The instrument adopts high-performance ARM processor to monitor the displacement value of LVDT linear differential transformer sensor. It has good stability, high accuracy, friendly and beautiful interface, simple operation, convenient and reliable maintenance, and is at the leading level in China.

Our product portfolio

  • 1. The displacement monitor takes the advanced ARM high-performance embedded processor as the core, and adopts professional signal conditioning and filtering circuits. The linearity, frequency response, temperature drift and anti-interference ability of the instrument measurement have been greatly improved, making the system measurement accuracy higher and the protection action more reliable

    2. The oil level, valve position opening and cylinder expansion of the steam turbine can be monitored

    3. The configuration mode is flexible, and the working mode and parameters of the instrument can be configured and set by the upper computer software configuration or by pressing keys and touch screen

    4. Dual channels can work independently or single channel can be used through configuration instrument

    5. The parameters of the instrument can be viewed or set locally. Including: meter number, baud rate, calibration mode, channel status, small signal removal, alarm reset mode, range, alarm set value (alarm I value, alarm II value), alarm delay value, (4~20) mA corresponding range, etc

    6. Peak memory and setting parameters can be stored for a long time after power failure

    7. It has power-on and power-off suppression function (protection of historical data, suppression of false alarm), and self-locking alarm output function within about 5 seconds after power-on

    8. RS485 communication interface and general MODBUS-RTU communication protocol realize the network communication and remote control functions of the instrument

    9. Sensor raw signal output

  • 1. Input: TDZ-1, TD-1, TD-2, UT-81 series linear differential transformer displacement sensor (LVDT)

    2. Display range: 1999mm

    3. Range: within (0~1000) mm (determined by the matched sensor)

    4. Display mode: 3.5 inch TFT true color touch screen or digital tube

    5. Current output: (4~20) mA, independent for each channel, short circuit protection, maximum load 400Ω, Error:± of full scale; 1.0%。

    6. Alarm: alarm setting: 2 points per channel (alarm I, alarm II). Setting range: any setting within the full range. Alarm delay: any integer within the range of (0~30) seconds. Alarm output: relay normally open and normally closed contact mode output, contact capacity DC28V/2A or AC250V/1A

    7. Communication: RS485 communication interface, MODBUS-RTU communication protocol: baud rate: 4800bps, 9600bps (default), 19200bps, three options. Verification method: no verification (default), even verification and odd verification. Three options are available

    8. Environmental restriction: there is no corrosive and strong magnetic field around

    9. Temperature and humidity: operating temperature: (0~50) ℃. Limit temperature: (- 10~60) ℃. Storage temperature: (- 40~70) ℃. Relative humidity: (20~90)% RH (non condensing)

    10. Power supply: voltage (85~265) VAC, frequency 50Hz/60Hz, power consumption < 8W

    11. Instrument size and installation: overall dimension: width 160 mm× Height 80 mm× 130mm deep. Hole size: width 152 mm× 76mm high. Installation method: fixed on disk

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