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Used test in Shanghai, China

  • Black Body Furnace | Tachometer

    Black Body Furnace | Tachometer Calibrator

    • Manufacturer: Lisun

    The BBF-1 Black Body Furnace is according to GB-T 21417.1-2008 , GB-T21416-2008 ,etc. It is mainly used for the calibration of various electronic infrared ear thermometers and infrared forehead thermometers, and ...

    $999 USD
    Shanghai, China
  • Pressure Transducer XY-PTHF

    Pressure Transducer XY-PTHF

      High Frequency Response, Wide Passband And Working Temperature For Scientific Experiments High frequency dynamic pressure measurement, such as military engineering, chemical explosion experiments, oil exploration...

      Shanghai, China
    • Air Conditioning Pressure Transducer XY-PTA

      Air Conditioning Pressure Transducer XY-PTA

        Common Electronic And Mechanical Connections, Offer Customized Types Brass shell additional EPDM Seal Ring, optional IP65 and IP67 Ingress protection, applied to measure and control air condition or air condition...

        Shanghai, China
      • Digital Pressure Switch XY-PS650

        Digital Pressure Switch XY-PS650

          4-Digits; Dual Relay, Output Signal NONC; Set Alarm Point In Whole Measurement Range 100x76mm size, Plastic shell, integrating pressure measurement and control; Widely used in Automatic System, Mobile Working Mac...

          Shanghai, China
        • T-Type Thermocouple Wire

          T-Type Thermocouple Wire

          • Manufacturer: Shanghai Jingxin Industrial Development

          Model: Specifications: Most thermocouple wires used in the manufacture of sensors are "specially restricted" wires and meet NIST standards and must be accurate to 0.5°C over a range of 0-50°C. This means that eve...

          Shanghai, China

        Overview

        Feedback devices are sensors and transducers—encoders, resolvers, tachometers and position sensors—used on crawler loaders and heavy equipment to provide real-time data on position, speed and direction. They enable precise control of hydraulics, drive systems and automation, and support diagnostics and safety functions. Buyers choose based on resolution, environmental rating (IP), electrical interface (analog, digital, CAN), mounting, shaft size and compatibility with the machine’s controller.

        FAQ

        How do I ensure a feedback device is compatible with my crawler loader?

        Match electrical interface (voltage, signal type, CAN), mechanical mounting, shaft diameter, resolution and connector pinout to your controller. Provide the OEM part number or controller specs to the seller and ask for a datasheet.

        What should I check when buying a used feedback device?

        Inspect for shaft play, corrosion, water ingress, damaged connectors and seals. Request recent test reports, output waveform checks and serial numbers. Verify calibration history and spare-part availability.

        How should feedback devices be shipped to avoid damage?

        Pack with shaft caps, anti-static wrap, desiccant and vibration-damping material inside a sturdy crate. Label fragile, insure the shipment and include a parts list and datasheet for customs if shipping internationally.

        What maintenance and calibration do feedback devices need?

        Routine checks include visual inspection, connector cleaning, seal integrity and output testing. Calibrate after repairs, impacts or annually depending on usage. Replace bearings, seals or the unit if accuracy degrades.