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Used digital instruments

  • Trusted Seller
    Extech Instruments Handheld Digital Photo

    Extech Instruments Handheld Digital Photo Tachometer

    • Manufacturer: Extech

    OEM:Material:Common Name:Item Weight:Serial Number:SKU#:Powers On:Includes Power Cords:Functional Condition:Cosmetic Condition:Location:

    $46 USD
    Twinsburg, OH
  • Auction
    Digital Refractometer, Digital Tachometer, Oakton

    Digital Refractometer, Digital Tachometer, Oakton PH700

      Digital Refractometer, Digital Tachometer, Oakton PH700, UK Cat# IA9300, Electrothermal {REF:186074} Potential Contamination — Buyer Acknowledgment Notice: The Assets may be contaminated with Burkholderia cepacia...

      North Bergen, NJ
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    • Trusted Seller
      Power Instruments Tak-Ette Tachometer #39643

      Power Instruments Tak-Ette Tachometer #39643

      • Manufacturer: POWER INSTRUMENTS

      Power Instruments Tachometer With Digital Display Hp: 0

      Fitchburg, MA
    • Trusted Seller
      Monarch Instrument TACH-4A Programmable Optical

      Monarch Instrument TACH-4A Programmable Optical Tachometer

      • Manufacturer: Monarch

      “Preowned, inspected and tested. Nice condition.” Mpn: TACH-4A | Used or new.: Used | Item tested or untested.: Tested | Power requirements.: AA Batteries | Qty included in this sale.: 1 | Esthetic condition.: Go...

      $220 USD
      Saint-Jean-sur-Richelieu, Canada
    • Trusted Seller
      Barnant 90 Digital Thermometer with

      Barnant 90 Digital Thermometer with Type J Thermocouple

      • Manufacturer: Barnant

      The Barnant 90 is a versatile hand-held thermometer that provides highly accurate temperature measurements with a range of –200°C to 1000°C (–328°F to 1832°F ). The instrument is designed for easy operation and i...

      $92 USD
      Montréal-Est, Canada
    • QTY. 1. AMETEK MANSFIELD AND

      QTY. 1. AMETEK MANSFIELD AND GREEN DIVISION DIGITAL TACHOMETER MODEL: 1726

      • Manufacturer: AMETEK Powervar
      • Model: 1726

      QTY. 1. AMETEK MANSFIELD AND GREEN DIVISION DIGITAL TACHOMETER MODEL: 1726 FREQ. RANGE: 10HZ TO 1667.0 HZ. ROTATIONAL ACCURACY +/_ .025 % OF INDICATED READING + 1. LSD LINEAR MEASURING ACCURACY +/_ .2 % + 1 LSD. ...

      Texas City, TX
    • Omega 8 Channel Benchtop Cryogenic

      Omega 8 Channel Benchtop Cryogenic Digital Thermometer Datalogger CYD218E

      • Manufacturer: Omega

      “Nice instrument, guaranteed fully functional.” This listing is for one Omega 8 Channel Benchtop Cryogenic Digital Thermometer Datalogger Monitor model CYD218E. "The model CYD211 Temperature Monitor provides the...

      Sparks, NV
    • SMC ZSE30 ISE30SERIES DIGITAL PRESSURE

      SMC ZSE30 ISE30SERIES DIGITAL PRESSURE SWITCH

      • Manufacturer: SMC

      SMC ZSE30 ISE30SERIES DIGITAL PRESSURE SWITCH The system was de-installed in working operational condition. All returns must comply with the stated Return Policy. Please continue: PAYMENT OPTIONS: We accept Pay...

      $89 USD
      Carpinteria, CA
    • Trusted Seller
      LW Scientific Hand Held Tachometer

      LW Scientific Hand Held Tachometer

      • Manufacturer: LW Scientific

      The LW Scientific Hand-Held Tachometer is a compact, precision instrument designed to measure rotational speed in centrifuges and other laboratory equipment. Ideal for calibration, quality control, and maintenanc...

      $295 USD
      Twinsburg, OH
    • Trusted Seller
      MONARCH Pocket-Tach 100 Tachometer

      MONARCH Pocket-Tach 100 Tachometer

      • Manufacturer: Monarch

      The Monarch Pocket-Tach 100 Digital Tachometer is a compact and versatile instrument designed for accurate measurement of rotational speeds. Its digital display and user-friendly features make it suitable for a w...

      Cary, NC
    • Trusted Seller
      Schmidt Control Instruments PH-200L SEG

      Schmidt Control Instruments PH-200L SEG Digital Tachometer

      • Manufacturer: Schmidt

      The device/system offered here has been tested and is fully functional and ready for use. The offered instrument / system is fully functional tested and ready to use. MORE DETAILS TO FOLLOW / FURTHER DETAILS TO F...

      $282 USD
      Schönwalde-Glien, Germany
    • Dwyer 4C-3 PID Temperature Controller

      Dwyer 4C-3 PID Temperature Controller – 1/4 DIN – Relay Output – RTD/Thermocouple – New

      • Manufacturer: Dwyer

      🔹 Screen ✔ LED digital display ✔ Separate indicators for PV (process value) and SV (desired value) 🔹 Common applications ✅ Temperature control in ovens, chambers, and industrial processes ✅ Thermal automation in ...

      $129 USD
      Tijuana, Mexico
    • Trusted Seller
      Hanna HI 935002 Dual-Channel K-Type

      Hanna HI 935002 Dual-Channel K-Type Thermocouple | Thermometer | Measuring Instrument

      • Manufacturer: Hanna

      For sale is a used HI 935002 thermometer from Hanna Instruments. This waterproof, digital thermometer enables high-precision temperature measurements with two independent channels and is ideal for laboratory and ...

      $214 USD
      Borken, Germany
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      Omega OM-5000

      • Manufacturer: Omega

      Omega's digital Logger can be furnished with a variety of multiplexers and other circuitry for various logging tasks. The Logger is completely self-contained and equipped with a built-in 24-column thermal printer...

      Farmingdale, NJ
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      ARRA D3428B

      • Manufacturer: ARRA

      Cal: Calibration Available | As-is: Unit is sold AS-IS | D: Digital Readout | N: Type N Female Connectors

      Farmingdale, NJ
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    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.