Shenzhen Qinlian Technology Co., Ltd
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Wind turbine rotor clearance test, wind turbine rotor clearance test, clearance measurement sensor - MTI instrument
Digital capacitor
Product details

Wind turbine rotor clearance test, wind turbine rotor clearance test, clearance measurement sensor

---MTI Instrument Wind Turbine Direct Drive Rotor Clearance Measurement System

The issues discovered by our clients

  • How to monitor the clearance of small direct drive rotors in real time to prevent contact between the rotor and stator, which can cause damage, especially as the rotor heats up.

  • Can operate in strong magnetic fields (2 Tesla and above)
Solution
  • Thin capacitance gap sensor between stator and rotor
  • Strong anti magnetic field ability
  • High precision
  • Very thin probe (300 microns)
  • Cost-effective
  • Real time monitoring of gaps (monitoring of gap fluctuations)
  • Durable, but will not damage the rotor in the event of a malfunction
  • Stable, high temperature stability
MTI Instrument's RG100 capacitive gap sensing system is specifically designed for real-time measurement of the gap of direct drive wind turbine rotors under all conditions.
  • Compact sensor electronic devices
  • Anti noise analog current loop output (compatible with SCADA)
  • Track minimum gap and real-time gap (2 outputs)
  • Customize cable length to suit all applications
  • Built in error correction table, high accuracy (no need for customer calibration)
  • 24 VDC standard instrument power supply

MTI's sensors are directly placed in the rotor clearance of a strong magnetic field, direct drive turbine.

  • Protection level reaches IP67, single channel RG100
  • No need for cooling
  • Local three-axis connection
  • (No need for cable grounding)
  • Flexible polyamide material, replaceable probe
  • 2 4-20mA outputs, voltage output can also be selected
  • Protection level reaches IP67, single channel RG100
  • No need for cooling
  • Local three-axis connection
  • (No need for cable grounding)
  • Flexible polyamide material, replaceable probe
  • 2 4-20mA outputs, voltage output can also be selected

history

MTI digital capacitors first implemented a solution on-site in 2014

  • Standard dual channel
  • The capacitor system is inside the NEMA box
  • Coaxial three-axis conversion
  • Triple coaxial grounding module
  • Flexible polyamide probe
  • The probes for each channel have been calibrated at the factory

now

Based on 8 years of experience, MTI launched a new system RG100 in 2021

  • Protection level reaches IP67, single channel RG100
  • No need for cooling
  • Local three-axis connection
  • (No need for cable grounding)
  • Flexible polyamide material, replaceable probe
  • 2 4-20mA outputs, voltage output can also be selected
  • Protection level reaches IP67, single channel RG100
  • No need for cooling
  • Local three-axis connection
  • (No need for cable grounding)
  • Flexible polyamide material, replaceable probe
  • 2 4-20mA outputs, voltage output can also be selected
Sturdy RG 100 MTI Consumption D
Specifications:
1 capacitor gap sensor input
  • IP67 aluminum alloy shell: 150x64x40 LxWxH
  • Directly install the board
  • Cable length can be customized according to requirements (up to 20 meters)
  • 25mm x 25mm, 300 micron thick polyamide coated probe
  • Non-magnetic
  • Can be bonded to the gap between magnets or stator poles
  • Low noise three-axis cable blocks magnetic field
  • The fixed length of the probe cable and preamplifier is 1.5 meters
  • Two 4-20 mA current loop outputs:
  • 1 real-time output gap
  • 1 output minimum gap
Main specifications
  • Capacitive sensor with two current loop analog output channels
  • First output, 4-20mA analog output, real-time tracking gap
  • The second output detects and maintains the minimum gap for output measurement
  • Keep the reset time set to 1RPM
  • The maximum loop impedance is 500 ohms, and the rated load is 250 ohms
  • The analog output current is proportional to the gap and does not require user linearization correction.
  • The designed probe is as thin as 300 microns. (Will not damage the rotor in case of malfunction)
  • Forward lock the BNC probe connector to the preamplifier.
  • High linear accuracy (less than 100 microns (0.004 inches)) and excellent temperature stability
RG-100 output signal
Sensors can be bonded to permanent magnets or stator coil poles.

Typical signals come from gap sensors installed on the rotor (magnet) and stator coil poles.
The vertical axis is millimeters, and the horizontal axis is seconds

General specifications of MTI measurement D sensor amplifier

The measurement range is determined by the selected probe and amplifier (range extension)
The actual resolution is a function of the measurement range and frequency response. Contact the factory for more information
3 cut-off frequencies set during factory calibration (50, 100, 500, 1kHz or 5kHz available)
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Successful operation!

Successful operation!

Successful operation!