NIST-Traceable Calibration Services for Electrical, Mechanical, Electromechanical, and Electronic Measuring Instruments in Silver Spring, 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 Silver Spring customers’ facilities as well as in-house service at our calibration laboratory. Our onsite calibration customers enjoy same-day turnaround of their test equipment at their own facilities with minimal downtime. Our in-house calibration service 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 Silver Spring customers:

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


On This Page

We Support Silver Spring Facilities with our NIST-Traceable Electrical Test Equipment Calibration Services

Testing companies count on ETI to run the annual calibration programs of their electrical test equipment. Our NIST-traceable calibrations address circuit breaker testers, recloser test sets, electrical clamps, oscilloscopes, power factor test sets, multimeters, power analyzers, DLRO’s, meghommeters, power supplies, and a vast range of additional instruments. Our team can calibrate your instruments at your location or off-site at ETI’s calibration laboratory. Customers in Silver Spring, MD choose to have ETI come onsite for same-day turn-around of their equipment with nearly no time out of commission. When you mail your instruments in for service at our laboratory, we aim to deliver your equipment in a matter of 5 to 8 business days. In addition, we offer an expedite service for Silver Spring clients who need quick turnaround of their equipment. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Municipalities, electrical contractors, electrical testing businesses, universities, Fortune 500 companies, nuclear energy facilities, utilities, and data centers of a variety of sizes and shapes in Silver Spring, MD count on ETI as a critical calibration partner.

Supporting Silver Spring Facilities with NIST-Traceable Mechanical Test Equipment Calibration Services

ETI offers NIST-traceable calibration services for a variety of mechanical measuring and test equipment, including 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 provide both calibration services in our clients’ business locations in Silver Spring, Maryland and also in-house professional service at our calibration laboratory. Our onsite customers in Silver Spring get same-day turnaround of their test equipment at their private facilities with very little downtime. Our in-house calibration offering provides quick best completion times of 5 to 8 business days, with an expedite service available to return your equipment to Silver Spring as soon as is possible. 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 all types in Silver Spring, MD count on ETI to take care of their mechanical test and measuring instrument calibration programs.

We Extend the Life of Critical Test Equipment in Silver Spring, MD through our Professional Repair Services

ETI services all major brand names and models of electrical testing instruments. Whether your Silver Spring facility’s instruments have been in service for many years or are recent to your company, our vast repair capabilities can lengthen the lifespan of your essential testing equipment. ETI’s maintenance and repair customer services include lab instruments, panel meters, multimeters, power quality meters, switchboard meters, analog instruments, clamp-on meters, oscilloscopes, power analyzers, frequency counters, digital instruments, and a wide variety of other electrical and mechanical test equipment. All of our repairs include NIST-traceable calibration of your equipment, in-depth documentation, competitive pricing, and a fast turnaround. Silver Spring facilities rely on ETI to lessen their down time and mend their critical test instruments.

We Manufacture Top Quality Circuit Breaker Testers and Power Supplies for Clients All Over the Nation

ETI manufactures and retails trusted electrical test equipment. Our Professionals specialize in circuit breaker testing instruments, such as circuit breaker test sets and power supplies. In addition, we are the United States reseller and service center for the complete line of Metrel electrical test instruments and products.

Our product line of top quality low voltage high current circuit breaker test sets provide for the full spectrum of electrical testing companies’ requirements. Our primary injection circuit breaker testers range from 250A to 6,000 A continuous output, with instant 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 best the market in capabilities and reliability 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. Additionally, we retrofit other manufacturers’ circuit breaker test sets with our MAC-21 controller:

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

ETI’s premium power supplies are light in weight, sturdy, and reliable. Our instruments 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 U.S. reseller and authorized service center for Metrel products, ETI is truly a one-stop shop for electrical testing companies’ instrument requirements. We support and sell the entire line of Metrel offerings, which include DLRO’s, meghommeters, and power analyzers. Our annual repair services and calibration programs on every product we produce and sell make ETI the trusted partner of hundreds of electrical testing companies, universities, data centers, Fortune 500 companies, utilities, and municipalities nationwide.

About Silver Spring, MD

Silver Spring is a large unincorporated municipality located in Montgomery County, Maryland. Lying only 7 miles north of Washington, D.C., Silver Spring is a major business hub which is also not far from Baltimore. Silver Spring has a population of 78,038 and it is the 448th largest city in the United States. People with a median age of 34.8 and a median household income of $72,887. In Silver Spring, MD, the median worker income is $36,147. This is higher than the national average of $29,701. You can enjoy Rock Creek Park which passes along the west side of Silver Spring, and offers hiking trails, picnic grounds, and bicycling on weekends, when its main road, Beach Drive, is mostly closed to motor vehicles.

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Electrical Test Instruments supports customers in Silver Spring, Maryland, including the following zip codes: 20815, 20901, 20902, 20903, 20907, 20910, 20911, 20912, 20918. Click here to return to our MD service area page.