Dynamp
DynAmp, LLC designs and manufactures high-current measurement systems — fiber optic, Hall-effect, OLOP, and Rogowski-based — used by global aluminum, chlor-alkali, hydrogen, fusion, copper, magnesium, steel, and zinc producers to optimize electro-industrial process efficiency and protect power-conversion equipment.
- Company typePrivate
- Founded1961
- HeadquartersGrove City, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Dynamp does
DynAmp, LLC is a US-based designer and manufacturer of high-current measurement systems for electro-industrial processes and high-power conversion applications, headquartered at 3735 Gantz Road in Grove City, Ohio. Founded in 1961 as Halmar Electronics, the company has continuously operated for over 60 years under multiple ownerships — most recently transitioning in October 2022 to a wholly-owned subsidiary of Italian electro-industrial group FRIEM, following a 2003 management buyout from LEM DynAmp. Its portfolio spans six core measurement product families based on four underlying sensing technologies: the LKCO fiber optic current measurement system using Faraday-effect with patented closed-loop architecture (rated to 600kA DC at 0.1% accuracy), the LKP closed-loop Hall-effect system for 12kA-60kA DC bus currents, the LKAT/LKAT2 systems built on Open Loop Open Path (OLOP) technology, the BRP Advanced Rectifier Protection system with proprietary magnetic shielding and ASIC-based sensors, the RCEM Rogowski-coil rectifier monitoring system for 12-240 channels, and the battery-powered COP Clamp-On portable ammeter for up to 100kA DC. Supporting offerings include precision instrumentation shunts, process voltage isolators, standard signal isolators, integrated instrumentation packages, and fully custom engineered systems.
DynAmp generates revenue through three streams: one-time hardware sales of the proprietary measurement systems; recurring services including in-house and on-site calibration, commissioning, verification, repair, upgrades, energy audits, and training; and customized instrumentation peripherals. Pricing is quote-based with no public list prices, and the company sells primarily via direct enterprise field sales complemented by a global network of regional support partners in Australia, China, France, Germany, India, Japan, Norway/Sweden, and South Africa, with the FRIEM relationship strengthening European reach.
The end markets are industrial verticals whose productivity hinges on accurate DC current measurement: aluminum smelting (pot-line current efficiency and process optimization), chlor-alkali chemical production, green hydrogen electrolysis, plasma fusion energy research, copper refining, magnesium electrolysis, zinc electrolysis, and steel electric arc furnaces. Customers are large-scale industrial operators for whom a tenths-of-a-percent measurement improvement can materially shift competitive position and where energy spend per facility ranges from $11M to over $75M.
Dynamp firmographics
Firmographics- Name
- Dynamp
- Legal name
- DynAmp, LLC
- Website
- https://dynamp.com
- Company type
- Private
- Founded year
- 1961
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- DynAmp, LLC designs and manufactures high-current measurement systems — fiber optic, Hall-effect, OLOP, and Rogowski-based — used by global aluminum, chlor-alkali, hydrogen, fusion, copper, magnesium, steel, and zinc producers to optimize electro-industrial process efficiency and protect power-conversion equipment.
- Ownership category
- akta.pro rank
Dynamp industry classification
Industry- Product category
- Industrial Current Measurement Systems
- NAICS
- Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Other Measuring and Controlling Device Manufacturing (334519), Electronic and Precision Equipment Repair and Maintenance (811210)
- SIC
- Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Power Quality, Metering & Monitoring (HDACAJAG)
Keywords
Where Dynamp is headquartered
LocationHeadquarters
- HQ city
- Grove City
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Dynamp business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- High Current Measurement Hardware: DynAmp generates revenue through the sale of high-precision current measurement systems including LKCO, LKP, LKAT, BRP, RCEM, and Clamp-On products. These are industrial measurement instruments sold primarily to large-scale electrolysis and electro-industrial operations for process monitoring, control, and protection.
- Services and Support: Revenue generated from in-house support, on-site services including commissioning, verification, calibration, repair and upgrades, power usage monitoring, and energy audits. Also includes rental options for LKAT, RCEM systems and Opti-Cal portable reference standards.
- Custom Instrumentation and Peripherals: Sale of custom engineered solutions including process voltage isolators, standard signal isolators, integrated instrumentation packages, precision instrumentation shunts, and fully custom systems tailored to specific customer requirements.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Quote-based industrial product sales |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Dynamp product offering
Product offeringCore offering
DynAmp designs, manufactures, and sells high-accuracy, high-reliability current measurement systems for electro-industrial processes and high-power conversion applications. The portfolio spans four proprietary sensing technologies—patented closed-loop fiber optic (LKCO), closed-loop Hall effect (LKP), OLOP (LKAT), and Rogowski coil (RCEM)—and measures currents from 2kA to over 600kA with accuracies of 0.1% to 2.5%. Products are complemented by on-site/in-house support, calibration, repair, rentals, and custom-engineered peripheral instrumentation.
Product overview
DynAmp offers a comprehensive portfolio of high current measurement systems for electrolytic and electro-industrial applications. The core product line includes the LKCO (fiber optic), LKAT (OLOP technology), LKP (Hall effect), BRP (rectifier protection), RCEM (rectifier monitoring), and Clamp-On portable meter. These products utilize four distinct measurement technologies: fully-compensated optical, closed-loop Hall effect, advanced OLOP, and Rogowski coil technology. Supporting the product line are peripheral offerings including process voltage isolators, signal isolators, precision shunts, integrated instrumentation, and custom systems. Comprehensive services cover in-house/on-site support, equipment rentals, and training. The portfolio serves applications including aluminum, chlor-alkali, hydrogen, fusion, copper, magnesium, steel, and zinc production with systems capable of measuring currents from 2kA to over 600kA with accuracies ranging from 0.1% to 2.5%.
Differentiator
Problem solved
Functional benefit
Products and services
- LKCO Fiber Optic Current Measurement System High-accuracy fiber optic current measurement system using Faraday effect technology with a patented closed-loop design. Measures DC currents to over 600kA with 0.1% accuracy, with immunity to external magnetic interferences and automatic temperature compensation. For aluminum smelting, chlor-alkali, hydrogen, copper, magnesium, and fusion energy processes.
- LKAT OLOP Current Measurement System Current measurement system using advanced OLOP (Open Loop Open Path) technology designed to accurately measure high AC/DC currents in harsh industrial settings, with 0.25% measurement accuracy and rugged construction. For aluminum electrolysis, electrochemical industries, and other harsh electro-industrial applications.
- LKP Closed-Loop Hall Effect System
- BRP Advanced Rectifier Protection System Modular reverse current detection system with proprietary magnetic shielding and ASIC-based current sensors. Incorporates 30+ years of rectifier protection experience with a fourth-generation quadrature switch element and onboard temperature compensation. Replaces older BCMR systems with simplified configuration.
- RCEM Rectifier Condition and Evaluation Monitoring System Non-contact measurement system using Rogowski coils to detect the balance of every semiconductor within a rectifier. Measures 12 to 240 individual channels with up to 10kA per channel, real-time data display, and adjustable alarm capabilities for predictive maintenance of high-power rectifiers.
- Clamp-On (COP-D) Portable Ammeter Battery-powered digital ammeter for non-contact DC current measurement from 2kA up to 100kA. Lightweight, portable design providing 2.5% accurate readings even in extreme magnetic fields, for field troubleshooting and spot measurements on electro-industrial equipment.
- Process Voltage Isolators Products designed to isolate higher DC voltages up to 2.5kV from downstream instrumentation and systems. Used to protect downstream measurement and control equipment in high-voltage electro-industrial environments.
- Standard Signal Isolators Signal isolators designed to convert input signals to various forms (voltage/current, uni-polar, bi-polar) for noise-free transmission in industrial environments.
- Integrated Instrumentation Packages Custom instrumentation packages configured to customer applications, combining industry-standard components with custom products to deliver complete measurement and isolation solutions.
- Precision Instrumentation Shunts High-accuracy, individually calibrated shunts for precise conversion of current signals to voltage. Compatible with LKCO, LKP, LKAT, and legacy DynAmp systems.
- Custom Engineered Systems Custom engineered solutions designed to specific customer requirements, applying DynAmp's measurement know-how and IP for unique electro-industrial applications.
- In-House and On-Site Support Services Expert technical support including calibration, troubleshooting, repair, commissioning, verification, power usage monitoring, and energy audits, delivered in-house at DynAmp's Ohio facility or on-site at customer plants.
- Equipment Rentals Rental options for LKAT, RCEM systems, and Opti-Cal portable reference standard equipment for urgent needs or short-term process monitoring.
- Training Services Training programs for technicians to operate, troubleshoot, and perform maintenance on DynAmp equipment.
Quantifiable outcome
- LKCO systems measure currents to over 600kA DC with accuracy of 0.1% or better
- +4 more outcomes
Companies that use Dynamp
Customer profileNamed customers8 records
Segments9 records
Ideal customer profiles8 records
Dynamp technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Dynamp partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and regional.
- GEcoreDynAmp signed optical technology agreement with GE in March 2021. DynAmp had been sourcing its fiber optic sub-system from GE for almost 20 years. The agreement provides DynAmp with access to GE renewable energy patents, intellectual property, and manufacturing processes to produce the fiber optic sub-system at its headquarters and factory. This enables DynAmp to optimize the complete manufacturing process and have the entire process under one control structure.
- Pacific Test (Australia)regionalRegional support partner for DynAmp in Australia, providing local sales and support services for customers in the region.
- Sunking-Tech (China)regionalRegional support partner for DynAmp in China, providing local sales and support services for customers in the region.
- SEREM Electronics (France)regionalRegional support partner for DynAmp in France, providing local sales and support services for customers in the region.
- Friem (Germany)regionalRegional support partner for DynAmp in Germany, providing local sales and support services for customers in the region. Friem is also the parent company that acquired 100% ownership of DynAmp.
- PaceC Services (India)regionalRegional support partner for DynAmp in India, providing local sales and support services for customers in the region.
- Current JapanregionalRegional support partner for DynAmp in Japan, providing local sales and support services for customers in the region.
- Normet (Norway/Sweden)regionalRegional support partner for DynAmp in Norway and Sweden, providing local sales and support services for customers in the region.
- Denver Tech (South Africa)regionalRegional support partner for DynAmp in South Africa, providing local sales and support services for customers in the region.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
Dynamp competitors and assessment
Company assessmentDirect peers
- LEM: Swiss-based global leader in electrical measurement solutions for current, voltage, and power. LEM is the most direct peer, having previously owned DynAmp (as LEM DynAmp) and continuing to compete across Hall effect and similar high-current measurement technologies for industrial and traction applications.
- FRIEM: Italian designer and manufacturer of power conversion and electro-industrial measurement systems. FRIEM is both DynAmp's parent company and a peer, serving overlapping electrolysis, smelting, and rectifier customers with complementary product lines.
Broad incumbents
- ABB: Global broad-line industrial automation and electrification supplier. ABB offers current sensors, power measurement, and process instrumentation that overlap with DynAmp's offerings as part of a much larger portfolio serving metals, chemicals, and power customers.
- Siemens: Diversified industrial technology and automation incumbent. Siemens' process instrumentation and power management products compete with DynAmp in metals, chemicals, and energy customers, typically as bundled automation solutions.
- Schneider Electric: Global specialist in energy management and industrial automation. Schneider's power metering, monitoring, and process instrumentation portfolios overlap with DynAmp's measurement capabilities for industrial customers worldwide.
- Yokogawa Electric: Japanese industrial measurement and control specialist serving process industries including chemicals, metals, and power. Yokogawa's current, voltage, and process instrumentation products compete with DynAmp in electro-industrial applications.
- Eaton: Global power management company with a wide range of electrical measurement, monitoring, and power quality products. Eaton competes in industrial and utility metering where DynAmp's high-current sensors are specified.
- Honeywell Process Solutions: Industrial process measurement and controls business within Honeywell. Serves metals, chemicals, and power customers with sensors and instrumentation that overlap with DynAmp's industrial current measurement portfolio.
- Rockwell Automation: Global industrial automation and information leader. Rockwell's process measurement and power monitoring products serve overlapping heavy-industry customers in metals and chemicals where DynAmp's current measurement systems are deployed.
Emerging players
- Phoenix Contact: German provider of industrial connection, automation, and measurement technology. Phoenix Contact's signal conditioners, current transducers, and process monitoring devices are partial competitors in industrial current measurement applications.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Dynamp social profiles
Digital presenceDynamp compliance and trust
Trust signalCompliance4 records
Dynamp financial estimates
Financial estimateRevenue estimate
Valuation estimate
Dynamp leadership team
Management profileNumber of profiles
Profiles13 records
Dynamp funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Dynamp M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Dynamp
What does Dynamp do?
DynAmp designs, manufactures, and sells high-accuracy, high-reliability current measurement systems for electro-industrial processes and high-power conversion applications. The portfolio spans four proprietary sensing technologies—patented closed-loop fiber optic (LKCO), closed-loop Hall effect (LKP), OLOP (LKAT), and Rogowski coil (RCEM)—and measures currents from 2kA to over 600kA with accuracies of 0.1% to 2.5%. Products are complemented by on-site/in-house support, calibration, repair, rentals, and custom-engineered peripheral instrumentation.
Is Dynamp a public or private company?
Dynamp is a private company. It is classified as corporate owned and is currently operating.
When was Dynamp founded?
Dynamp was founded in 1961. It employs 11 to 50 people.
Where is Dynamp based?
Dynamp is headquartered in Grove City, United States, in the North America region.
How does Dynamp make money?
Three revenue lines are on record. High Current Measurement Hardware is the primary driver. The others are services and Support and custom Instrumentation and Peripherals.
Who are Dynamp's main competitors?
Direct peers on record are LEM and FRIEM. Broad incumbents are ABB, Siemens, Schneider Electric, Yokogawa Electric, Eaton, Honeywell Process Solutions and Rockwell Automation. Phoenix Contact is listed as an emerging player.
Does Dynamp have an API?
No public API is recorded for Dynamp.
What industry is Dynamp in?
Dynamp's product category is Industrial Current Measurement Systems. Its primary akta.pro industry code is HDACAJAG, Power Quality, Metering & Monitoring. Its NAICS code is 334515 and its SIC code is 3825.