NIST-Traceable Calibration Services for Electrical, Mechanical, Electromechanical, and Electronic Measuring Instruments in Knoxville, TN

Electrical Test Instruments, LLC DBA ETI Precision (ETI) is a leader in the calibration and repair of test and measurement equipment, specializing in high-current and high-voltage instruments.

We provide onsite services in the Knoxville region, minimizing the downtime of your critical instruments by offering calibration services at your facility. Our NIST-traceable calibration services encompass a wide variety of electrical, mechanical, radio frequency (RF), pressure, physical-dimensional, and environmental instrumentation. For more information

We are an ISO 9001:2015-certified, ISO/IEC 17025:2017-accredited, and ANSI/NCSL Z540-1-1994-accredited calibration laboratory. We offer MIL-STD-45562A-compliant calibrations and calibrations in accordance with 10 CFR Part 21 and 10 CR Part 50 Appendix B upon request.

Contact us today
Phone: 410-857-1880

Just some of the products and services we offer our Knoxville customers:

  • Calibration of Test & Measurement Equipment
  • Frequency Counter Calibration
  • DLRO Calibration
  • Torque Wrench Calibration
  • Temperature Probe Calibration
  • Stopwatches & Timers
  • Ammeter & Shunt Calibration
  • Sound Level Meter Calibration
  • Oscilloscope Calibration
  • Thermocouple Calibrator Calibration
  • Process Calibrator Calibration
  • IR Thermometer Calibration
  • Digital Multimeter Calibration
  • Calibration of High Current – High Voltage Equipment:
  • Earth Ground Tester Calibration
  • Megohmmeter Calibration
  • Secondary Test Set Calibration
  • Hipot Tester Calibration
  • Relay Test Set Calibration
  • Power Quality Analyzer Calibration
  • Current & Potential Transformers
  • AC and DC voltages above 100kV
  • Single & Three Phase TTR Calibration
  • Power Supply Calibration
  • Primary Injection Test Set Calibration
  • High Voltage Detector Calibration


On This Page

NIST-Traceable Electrical Test Equipment Calibration Services in Knoxville, Tennessee

ETI specialises in NIST-traceable calibration services for various types of electrical test equipment, including recloser test sets, power supplies, power factor test sets, power analyzers, oscilloscopes, multimeters, meghommeters, electrical clamps, DLRO’s, circuit breaker testers, and everything in between. We provide both onsite calibration solutions in our clients’ facilities in Knoxville, Tennessee in addition to service at our calibration laboratory. Our on-site calibration customers in Knoxville appreciate same-day turn-around of their test equipment in their own facilities with marginal downtime. Our in-house calibration service ensures swift industry-leading turnaround times of five to eight business days, with an expedite service readily available to return your equipment to Knoxville asap. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Electrical testing businesses, municipalities, data centers, nuclear energy facilities, utilities, universities, Fortune 500 companies, and electrical contractors of all sizes and shapes in the Knoxville, TN Area depend on ETI to manage their electrical test equipment calibration programs.

ETI is a Well Known Provider of NIST-Traceable Calibration Services for Mechanical Instruments in Knoxville, TN

ETI’s NIST-traceable calibrations of mechanical measuring and test equipment are counted on by testing businesses around the country. The instruments we service include micrometers, oil pressure meters, infrared inspection equipment, IR cameras, pressure controllers, air pressure meters, calipers, tachometers, stop watches, torque wrenches, temperature meters, and everything in between. We are skilled in the calibration of mechanical equipment at our clients’ locations in Knoxville, Tennessee. Our company also offers a mail-in choice to service your critical mechanical test equipment here at our in-house calibration lab. Onsite calibration services in Knoxville is a cost-efficient and hassle-free option for local customers who prefer to curtail their downtime. Our mail-in option also provides quick turn-around times of 5 to 8 business days, ensuring our customers in Knoxville get their critical equipment serviced promptly. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Nuclear energy facilities, electrical contractors, acceptance testing businesses, universities, data centers, Fortune 500 companies, municipalities, and utilities of many sizes in Knoxville depend on ETI to handle their mechanical test and measuring instrument calibration programs.

Repairing Electrical and Mechanical Test Equipment for Knoxville Facilities

ETI fixes all major brands and models of electrical testing instruments. Whether your Knoxville facility’s instruments have been in operation for decades or are brand new, our broad repair capabilities can prolong the life of your most important testing equipment. ETI’s repair support services include clamp-on meters, analog instruments, panel meters, digital instruments, multimeters, power analyzers, oscilloscopes, lab instruments, frequency counters, switchboard meters, power quality meters, and a wide variety of other mechanical and electrical test equipment. All of our repairs include NIST-traceable calibration of your instruments, in-depth documentation, competitive pricing, and a swift turnaround. Knoxville, Tennessee facilities rely on ETI to decrease their downtime and restore their critical test instruments.

We Build Trusted Circuit Breaker Testing Equipment for the Electrical Testing Industry Nationwide

ETI makes and sells trusted electrical test equipment. Our Professionals specialize in circuit breaker testing instruments, such as circuit breaker test sets and power supplies. We are also the U.S. reseller and service center for the entire line of Metrel electrical test instruments and products.

Our line of top quality low voltage high current circuit breaker test sets serve the entire spectrum of electrical testing companies’ requirements. Our primary injection circuit breaker testers range from 250A to 6,000 A continuous output, with immediate testing capabilities up to 60,000 A. Our PI-250B, PI-800, and PI-1600 test sets are portable, modular, durable, and lightweight whilst outperforming competing products’ capabilities at their price points. Our stationary PI-2500, PI-4000B, PI-5000, and PI-6000 circuit breaker test sets also lead the sector in reliability and capabilities for high current circuit breaker testing. All ETI circuit breaker testers incorporate our cutting edge MAC-21 controller, which is a self-contained microprocessor-based metering and control package for primary injection testing. In addition, we retrofit other manufacturers’ circuit breaker test sets with our MAC-21 controller:

  • revamping the circuit breaker testing capabilities,
  • expanding their capabilities,
  • and extending their useful lives of our valued customers.

ETI’s premium power supplies are light in weight, durable, and dependable. Our instruments are capable of outputting 7.2 A to 20A continuous at 140 VAC. ETI’s power supplies are ideal for circuit breaker charging motor testing.

As the U.S. reseller and authorized service center for Metrel products, ETI is genuinely a one-stop answer for electrical testing companies’ instrument needs. We support and sell the entire line of Metrel offerings, which include meghommeters, DLRO’s, and power analyzers. Our yearly calibration programs and repair services on all products we manufacture and sell make ETI the trusted partner of hundreds of electrical testing companies, universities, data centers, Fortune 500 companies, utilities, and municipalities countrywide.

Calibration and Repair Services in Knoxville


About Knoxville, TN

A Knox County city Knoxville has a population of 187,603. It was the first capital of Tennessee. It was a major wholesaling and manufacturing center. Several national and regional companies have their headquarters here. It is a repository of the Appalachian culture. It is one of the gateways to the Great Smoky Mountains National Park. A burial mound here is one of the earliest artificial structures. Some of the prehistoric sites here are the Early Woodland Habitation Area, Dallas Phase, and Bussell Island. The city got its name after Henry Knox, a war veteran. The city did play a large role in the American Revolutionary War and The Civil War. Initially the city was a way station for the migrants and travelers. It was a merchandise center. People from here traded whiskey, corn and tobacco for cotton from the south. Sentiments were high on anti-secession and anti-slavery among the people here.

Are you new to Knoxville? Check out these local favorites:

Related Knoxville, TN Calibration & Repair Searches

  • calibration laboratory near me Knoxville TN
  • electrical test equipment in Knoxville
  • Knoxville calibration services
  • electronic instrument calibration Knoxville TN
  • mechanical instrument calibration in Knoxville
  • Knoxville instrument repair services
  • mechanical instrument repair Knoxville TN
  • NIST traceable calibration in Knoxville
  • Knoxville calibration facility near
  • air & oil pressure meters Knoxville TN
  • vacuum gauges in Knoxville
  • Knoxville electronics store
  • electrical test meter calibration Knoxville TN
  • pressure controllers & recorders in Knoxville
  • Knoxville temperature chambers & controllers
  • breaker test set Knoxville TN

ETI Precision – Electrical Test Instruments supports customers in Knoxville, Tennessee, including the following zip codes: 37901, 37902, 37909, 37912, 37914, 37915, 37916, 37917, 37918, 37919, 37920, 37921, 37922, 37923, 37924, 37927, 37928, 37929, 37932, 37934, 37939, 37950, 37995, 37996, 37997, 37998. Click here to return to our TN service area page.