Custom
Solutions built
for your application
Technical Support
Guidance from real people who understand your challenges.
Made in Ohio
Designed, engineered, and manufactured in Hilliard, Ohio.
1964
Founded on solid beginnings with ongoing innovation
What We Do
Power and energy measurement solutions built around your application.
Ohio Semitronics designs and manufactures electrical measurement technologies for customers who need dependable answers in demanding environments. From standard transducers and sensors to custom-built solutions, OSI helps engineers, buyers, and technical teams measure current, voltage, power, energy, and more with confidence.
Product Pathways
Find the right measurement solution faster.
Whether you know exactly what you need or are still narrowing down the right fit, OSI organizes its product offering around the way customers measure, monitor, and solve real electrical challenges.
Current Measurement
AC, DC, Hall Effect, high-current, and application-specific low or high-currentcurrent sensing solutions.
Voltage Measurement
Voltage transducers and measurement devices designed for performance, accuracy, and reliability.
Power
& Energy
Watt, energy, VAR, frequency, multifunction, and monitoring solutions for demanding applications.
Custom Solutions
When standard doesn’t fit, OSI builds around your need.
Some applications require more than an off-the-shelf product. OSI works with customers to modify existing designs, develop custom transducers, support obsolete part replacement, and solve measurement challenges tied to performance, footprint, output, accuracy, environment, or system requirements. When standard products don’t fit, OSI designs and builds to meet your
needs.
Technical Support
Not sure what you need? Start with a conversation.
Electrical measurement decisions are not always simple. Current type,
output signal, window size, mounting requirements, accuracy, environment,
and other application parameters will impact the right solution. OSI’s technical team helps you work through the details to
identify the right product, modification, or custom path forward.
Industries
Trusted where measurement matters
OSI measurement solutions support customers across industries where performance, accuracy, and reliability are critical. From defense to rail, industrial automation, utilities, energy storage, and hazardous environments, OSI helps your teams solve complex measurement challenges with confidence.
Defense
Rail & Transit
Data Centers & BESS
Industrial Automation
Oil & Gas
Utility & Power
Resources
Technical resources to reduce your workload.
Access product information, spec sheets, manuals, certifications, and support materials designed to help engineers and buyers quickly evaluate options, confirm requirements, and move toward the right solution.
Spec Sheets
Manuals
3D Printing
Selection Support
What can we measure for you?
Whether you need a standard product, a modified design, help replacing an obsolete part, or a custom solution for a challenging application, OSI’s technical team is ready to help you take the next step.