NIST-Traceable Calibration Services for Electrical, Mechanical, Electromechanical, and Electronic Measuring Instruments in Annapolis, MD

Electrical Test Instruments, LLC (ETI) is a leader in the calibration, repair, and manufacturing of electrical test equipment. We specialize in NIST-traceable calibration services for a variety of electrical test equipment and mechanical measuring instruments, including meghommeters, multimeters, clamps, torque wrenches, DLRO’s, circuit breaker testers, power factor test sets, recloser test sets, power supplies, power analyzers, and everything in between.

ETI provides both onsite calibration services at our Annapolis customers’ facilities as well as in-house service at our calibration laboratory, located at our headquarters in Maryland. Our onsite calibration customers enjoy same-day turnaround of their test equipment at their own facilities with minimal downtime. Our in-house calibration service located in Maryland provides fast industry-leading turnaround times of five to eight business days, with an expedite service available to turn your equipment around within three days. ETI is ISO 9001:2015 accredited, ANSI/NCSL Z540 compliant, and 10 CFR Part 50 Appendix B compliant, making us the clear choice for electrical testing businesses, municipalities, data centers, nuclear energy facilities, utilities, universities, Fortune 500 companies, and electrical contractors of all shapes and sizes.

We also manufacture circuit breaker testing equipment. Our primary injection circuit breaker test sets range from 250A to 6,000A continuous output, with capabilities for instantaneous testing up to 60,000A. ETI’s power supplies are ideal for circuit breaker charging motor testing. We are also the United States reseller and service center for Metrel products, including DLRO’s and meghommeters, making ETI a one-stop shop for your electrical testing needs.

Finally, our capabilities include high-quality repair services that can extend the life of your critical test equipment. ETI can help you solve your most complex and urgent test equipment challenges.

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

  • High Current Digital Ammetter Retrofit
  • Mobile Circuit Breaker Test Set
  • Test Equipment Calibration
  • Circuit Breaker Test Set Calibration
  • Clamp Calibration
  • Portable Circuit Breaker Test Set
  • Acceptance Testing Calibration
  • Portable Current Power Supply
  • NETA Calibration
  • Test Equipment Repair
  • Electronic Test Equipment Calibration Services
  • Circuit Breaker Tester Calibration
  • PEARL Calibration
  • AC-DC Variable Power Supply
  • Electrical Meter Calibration
  • Mechanical Instrument Calibration
  • Electric Meter Calibration
  • Adjustable Test Stab System
  • Portable Circuit Breaker Tester
  • Digital Multimeter Calibration
  • Meter Calibration Services
  • Torque Calibration
  • Pressure Calibration
  • Multimeter Calibration
  • Electrical Calibration Services
  • Oscilloscope Calibration
  • Electric Equipment Repair
  • Test Equipment Calibration Services


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NIST-Traceable Electrical Test Equipment Calibration Services at our customers’ facilities in the Annapolis, MD Area

Testing companies depend on ETI to run the yearly calibration programs of their electrical test equipment. Our NIST-traceable calibrations address DLRO’s, recloser test sets, oscilloscopes, circuit breaker testers, power analyzers, electrical clamps, meghommeters, power factor test sets, multimeters, power supplies, and a variety of other instruments. We provide both onsite services in our clients’ facilities in Alexandria, Virginia and also in-house professional service at our calibration laboratory located at our headquarters in Maryland. Our on-site customers in Annapolis appreciate same-day turnaround of their test equipment over at their private facilities with very little downtime. Our in-house service delivers swift best turnaround times of five to eight business days, with a speed-up service obtainable to return your equipment to Annapolis as soon as possible. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Universities, nuclear energy facilities, Fortune 500 companies, data centers, electrical testing businesses, municipalities, electrical contractors, and utilities of all sizes and shapes in Annapolis, Maryland rely on ETI as a critical calibration partner.

NIST-Traceable Mechanical Instrument Calibration Services Available in Annapolis, Maryland

ETI provides NIST-traceable calibration services for a wide range of mechanical measuring and test equipment, including oil pressure meters, micrometers, infrared inspection equipment, stop watches, pressure controllers, calipers, temperature meters, torque wrenches, tachometers, IR cameras, air pressure meters, plus everything in between. Our experts specialize in the onsite calibration of mechanical equipment at our clients’ facilities in Annapolis, MD. ETI also offers a mail-in choice to service your critical mechanical test equipment at our calibration laboratory . Onsite calibration services in Annapolis is a cost-effective and hassle-free option for local customers who prefer to minimize their downtime. Our mail-in option also provides quick turnaround times of five to eight business days, making sure that our customers in Annapolis 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. Acceptance testing businesses, nuclear energy facilities, municipalities, data centers, electrical contractors, universities, utilities, and Fortune 500 companies of various sizes in Annapolis, MD depend on ETI to oversee their mechanical test and measuring instrument calibration programs.

We Repair Electrical and Mechanical Test Equipment for Annapolis Facilities

ETI fixes all major brand names and models of electrical testing instruments. Whether your Annapolis facility’s instruments have been in service for decades or are recent to your company, our vast repair capabilities can extend the lifespan of your critical testing equipment. ETI’s customer services include switchboard meters, digital instruments, frequency counters, multimeters, oscilloscopes, analog instruments, power quality meters, panel meters, power analyzers, lab instruments, clamp-on meters, and a wide range of other mechanical and electrical test equipment. All of our repair services include NIST-traceable calibration of your instruments, in-depth documentation, competitive pricing, and a fast turnaround. Annapolis facilities turn to ETI to decrease their downtime and fix their critical test instruments.

We Manufacture High-Quality Circuit Breaker Testers and Power Supplies for Clients All Around the Nation

ETI makes and sells trusted electrical test equipment. Our Professionals provide services for circuit breaker testing instruments, including circuit breaker test sets and power supplies. We are also the United States reseller and service center for the full line of Metrel electrical test instruments and products.

Our product line of high-quality low voltage high current circuit breaker test sets serve the entire spectrum of electrical testing companies’ needs. Our primary injection circuit breaker testers range from 250A to 6,000 A continuous output, with instantaneous testing capabilities up to 60,000 A. Our PI-250B, PI-800, and PI-1600 test sets are modular, portable, 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 best the sector in reliability and capabilities for high current circuit breaker testing. All Electrical Test Instrument circuit breaker testers include our leading 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 highly valued clients.

ETI’s high-quality power supplies are light in weight, sturdy, and reliable. Our products are capable of outputting 7.2 A to 20A continuous at 140 VAC. ETI’s power supplies are excellent for circuit breaker charging motor testing.

As the United States reseller and authorized service center for Metrel , ETI is genuinely a one-stop answer for electrical testing companies’ instrument needs. We support and sell the whole line of Metrel offerings, which include meghommeters, DLRO’s, and power analyzers. Our annual calibration programs and repair services on all products we make and sell make ETI the go to partner of hundreds of electrical testing companies, Fortune 500 companies, utilities, data centers, universities, and municipalities across the country.

About Annapolis, MD

Annapolis is the capital of the state of Maryland in United States. Its population was 38,394 and as of December 2016 the unemployment rate for Annapolis was 3.2%. Annapolis is the oldest state capitol in continuous legislative use. It was also the capital of the fledgling United States in 1783 and 1784 where the Continental Congress would meet. Annapolis is also known as the sailing capital of the U.S., situated on the Chesapeake Bay, the largest inland tidal estuary in the world. Annapolis is home to excellent museums and performing arts groups. The Maryland Federation of Art Gallery on the Circle provides juried exhibitions by regional artists.

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Electrical Test Instruments supports customers in Annapolis, Maryland, including the following zip codes: 21401, 21402, 21403, 21404, 21411. Click here to return to our MD service area page.