Pyrometer Instrument
Keller HCW GmbH, doing business as Keller Pyrometer Systems (Pyrometer Instrument in the US), manufactures industrial infrared pyrometers for non-contact optical temperature measurement from -30°C to 3,500°C, serving steel, aluminum, glass, semiconductor, foundry, cement, energy, and research customers via direct enterprise sales worldwide.
- Company typePrivate
- Founded1928
- HeadquartersWindsor, United States
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Pyrometer Instrument does
Keller HCW GmbH, doing business as Keller Pyrometer Systems and referred to in the United States as Pyrometer Instrument, manufactures industrial infrared pyrometers for non-contact optical temperature measurement. Founded in 1928 and headquartered in Ibbenbüren-Laggenbeck, Germany, the company operates as a division of the Keller industrial conglomerate and sells through a direct enterprise field-sales model. Its six pyrometer series (CellaTemp PX, PA, PK/PKF/PKL, PR, PT, and Mikro) cover a measurement range from -30°C to 3,500°C and are complemented by fiber optic pyrometers, complete measuring systems, accessories, and mounting combinations. The technical foundation rests on proprietary optical designs combined with modern sensor technology and digital interfaces, including IO-Link (IEC 61131-9) on the PK and PX families, the CellaView configuration and visualization software, and the KITS Service App available in 22 languages on iOS, Android, and web. Customers are industrial enterprises in steel, aluminum, glass, semiconductor manufacturing (including MBE, PLD, RTP, SiC, and artificial diamond processes), foundries, building materials and cement, energy and combustion, and research institutions.
The business model is anchored on custom-quoted hardware sales of pyrometers and measurement systems, supplemented by professional services including installation, commissioning, supervision, repair, and technical consultation, plus pricing for the KITS App and CellaView software stack. No public pricing is disclosed; applications are matched through online inquiry forms, a product finder, measuring-field and emissivity calculators, and direct application-engineering engagement. The company maintains a multi-language web presence (14+ languages), runs vertical-specific content marketing through technical publications and an industry glossary, and participates in industry trade shows across Europe and Asia-Pacific, with scheduled appearances through 2026 in Germany, China, India, Japan, and Sweden. Ownership is private (German GmbH structure) under the Keller parent conglomerate, with no public listing, no disclosed funding rounds, and no public investor disclosures. Management team, executive leadership changes, regulatory actions, mergers, acquisitions, and restructuring events are not disclosed in the available source material.
Pyrometer Instrument firmographics
Firmographics- Name
- Pyrometer Instrument
- Legal name
- Keller HCW GmbH
- Website
- https://pyrometer.com
- Company type
- Private
- Founded year
- 1928
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Keller HCW GmbH, doing business as Keller Pyrometer Systems (Pyrometer Instrument in the US), manufactures industrial infrared pyrometers for non-contact optical temperature measurement from -30°C to 3,500°C, serving steel, aluminum, glass, semiconductor, foundry, cement, energy, and research customers via direct enterprise sales worldwide.
- Ownership category
- akta.pro rank
Pyrometer Instrument industry classification
Industry- Product category
- Industrial Temperature Measurement Instruments
- NAICS
- Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Other Measuring and Controlling Device Manufacturing (334519)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Optical Instruments & Lenses (3827)
- akta.pro primary industry
- Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration) (IMAGAFAA)
Keywords
Where Pyrometer Instrument is headquartered
LocationHeadquarters
- HQ city
- Windsor
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Pyrometer Instrument business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Industrial Pyrometer Equipment Sales: Sale of precision optical temperature measurement devices including pyrometers, measuring systems, accessories, and mounting combinations for industrial applications.
- Professional Services (Installation, Commissioning, Maintenance): Construction and assembly services including on-site installation, commissioning, supervision, and repair services. Priced according to time-based rates or project-based fees.
- Technical Consultation and Application Engineering: Expert consultation for selecting appropriate measurement solutions for specific industrial applications, including Industrial Solution Guide services.
Go-to-market motion1 record
Distribution channels2 records
Marketing channels7 records
Pyrometer Instrument product offering
Product offeringCore offering
Pyrometer Instrument (operating as Keller Pyrometer Systems under Keller HCW GmbH) designs, manufactures, and sells non-contact infrared pyrometers for industrial temperature measurement applications. The product portfolio covers six pyrometer series (PX, PA, PK, PR, PT, Mikro) with measurement ranges from -30°C to 3,500°C, complemented by integrated measuring systems, configuration software (CellaView), and professional installation, commissioning, and consultation services for industrial process control across steel, aluminum, glass, semiconductor, foundry, cement, and energy sectors.
Product overview
Keller HCW GmbH (Keller Pyrometer Systems) offers a comprehensive portfolio of non-contact infrared temperature measurement products for industrial applications. The core offering consists of six pyrometer series (Serie PX, PA, PK, PR, PT, and Mikro) covering a temperature measurement range from -30°C to 3,500°C, complemented by complete measuring systems, accessories, and mounting combinations. The product lineup is supported by software tools (CellaView, IO-Link Communication Tool) and the KITS Service-App — a digital service platform providing product information, calculators (measuring field, emissivity), troubleshooting guides, and ticket management. The company also provides online calculation tools (Messfeld-Kalkulator, Emissionsgrad-Kalkulator, Fehlerbehebung) accessible via web and mobile app. Key product series include IO-Link-enabled models (CellaTemp PK/PKF/PKL and PX series) supporting Industry 4.0 integration. Applications span steel, glass, aluminum, semiconductor manufacturing, foundries, induction heating, cement, and combustion plants.
Differentiator
Problem solved
Functional benefit
Brands
- Keller Pyrometer Systems: Brand name for the pyrometer and optical temperature measurement product line under Keller HCW GmbH
Products and services
- CellaTemp PX Pyrometer Series Pyrometer series with IO-Link communication interface (IEC 61131-9), designed for precision optical temperature measurement in industrial applications. Provides Industry 4.0 connectivity with automatic parameterization and plug-and-play device replacement.
- CellaTemp PA Pyrometer Series Pyrometer series for industrial temperature measurement applications, designed for specific temperature ranges with excellent optical properties.
- CellaTemp PK/PKF/PKL Stationary Pyrometer Series Stationary pyrometer series with IO-Link support, suitable for continuous industrial temperature monitoring and control. Supports digital point-to-point communication, automatic parameterization, and predictive maintenance.
- CellaTemp PR Pyrometer Series Pyrometer series for industrial temperature measurement applications with specialized optics for specific industrial requirements.
- CellaTemp PT Pyrometer Series Pyrometer series for industrial temperature measurement applications, designed for specific industrial requirements.
- CellaTemp Mikro Pyrometer Series Compact pyrometer series designed for applications requiring small measurement fields and precise temperature readings, with compact form factor suited to confined installation spaces.
- Messsysteme (Measuring Systems) Complete measurement systems integrating pyrometers with necessary components (including cooling armatures and fiber optic elements) for specific industrial measurement applications in harsh environments.
- CellaView Software Software solution for pyrometer configuration, data visualization, and temperature/process monitoring for industrial applications.
- Installation, Commissioning, and Maintenance Services Professional on-site services including installation, commissioning, supervision, and repair services for pyrometer systems. Priced according to time-based rates or project-based fees.
- Technical Consultation and Application Engineering Expert consultation services for selecting appropriate pyrometer measurement solutions for specific industrial applications, including application-specific engineering and Industrial Solution Guide services.
Companies that use Pyrometer Instrument
Customer profileSegments7 records
Ideal customer profiles7 records
Pyrometer Instrument technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Pyrometer Instrument partnerships and signals
Strategic signalScale indicators1 record
Recent moves5 records
Expansion highlights5 records
Pyrometer Instrument competitors and assessment
Company assessmentBroad incumbents
- Keyence Corporation: Global Japanese manufacturer of industrial sensors including laser displacement, proximity, and infrared temperature sensors. Competes with Keller in industrial process sensing through a broad, direct-sales-led portfolio and a much larger balance sheet.
- Advanced Energy (LumaSense / Impac): Advanced Energy acquired LumaSense and Impac Infrared, offering a broad portfolio of optical pyrometers, thermal imagers, and gas-detection instruments for industrial and semiconductor customers. Highly comparable product overlap with Keller, with a much larger corporate parent providing broader portfolio leverage.
- Excelitas Technologies (formerly Qioptiq / Linos): Excelitas offers optical sensing, infrared detection, and pyrometer sub-systems for industrial, scientific, and defense applications. Comparable at the level of optical infrared measurement technology, with a broader photonics portfolio than Keller.
- AMETEK Land Instruments: AMETEK's Land division supplies non-contact infrared pyrometers, thermal imagers, and combustion monitoring instruments to steel, glass, cement, and power customers. Closely comparable to Keller in industrial process temperature measurement, with the backing of a large industrial conglomerate.
- Fluke Process Instruments (Raytek): Fluke's process-instruments business, built on the legacy Raytek pyrometer line, provides fixed and portable infrared temperature sensors for industrial maintenance, manufacturing, and process control. Direct product overlap with Keller, with a much larger commercial and service infrastructure.
- Siemens Industry (Process Instrumentation): Siemens' process instrumentation portfolio, including SITRANS temperature sensors and integrated automation, competes with Keller in metals, glass, cement, and power plants. As a broad automation incumbent, Siemens can bundle temperature instrumentation with PLCs, drives, and digital-industry software that Keller cannot match.
Direct peers
- Calex Electronics: UK manufacturer of non-contact infrared temperature sensors and pyrometers for industrial OEM and process applications. Direct overlap with Keller in fixed pyrometers, short-wavelength devices, and industrial OEM integration use cases.
- Optris GmbH: Germany-based specialist manufacturer of infrared pyrometers and thermal imaging cameras for industrial non-contact temperature measurement. Direct overlap with Keller in product range (fixed pyrometers, portable devices), European industrial customer base, and Industry 4.0 / IIoT integration messaging.
- Thermoteknix: UK-based specialist in infrared thermal imaging and non-contact temperature measurement for industrial and defense applications. Comparable niche specialization and pyrometer / thermal-camera portfolio, competing for similar glass, metals, and process-industry customers.
Others
- Heitronics (Keller Group sibling / process radiation thermometers): Heitronics, part of the same Keller corporate group, produces radiation thermometers and blackbody calibration sources for industrial and laboratory use. Sister-company adjacency creates both an internal competitor and a potential cross-sell relationship relative to Keller Pyrometer Systems.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Pyrometer Instrument social profiles
Digital presencePyrometer Instrument financial estimates
Financial estimateRevenue estimate
Valuation estimate
Pyrometer Instrument leadership team
Management profileNumber of profiles
Pyrometer Instrument funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Pyrometer Instrument 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 Pyrometer Instrument
What does Pyrometer Instrument do?
Pyrometer Instrument (operating as Keller Pyrometer Systems under Keller HCW GmbH) designs, manufactures, and sells non-contact infrared pyrometers for industrial temperature measurement applications. The product portfolio covers six pyrometer series (PX, PA, PK, PR, PT, Mikro) with measurement ranges from -30°C to 3,500°C, complemented by integrated measuring systems, configuration software (CellaView), and professional installation, commissioning, and consultation services for industrial process control across steel, aluminum, glass, semiconductor, foundry, cement, and energy sectors.
Is Pyrometer Instrument a public or private company?
Pyrometer Instrument is a private company. It is classified as corporate owned and is currently operating.
When was Pyrometer Instrument founded?
Pyrometer Instrument was founded in 1928. It employs 1 to 10 people.
Where is Pyrometer Instrument based?
Pyrometer Instrument is headquartered in Windsor, United States, in the North America region.
How does Pyrometer Instrument make money?
Three revenue lines are on record. Industrial Pyrometer Equipment Sales are the primary driver. The others are professional Services (Installation, Commissioning, Maintenance) and technical Consultation and Application Engineering.
Who are Pyrometer Instrument's main competitors?
Broad incumbents on record are Keyence Corporation, Advanced Energy (LumaSense / Impac), Excelitas Technologies (formerly Qioptiq / Linos), AMETEK Land Instruments, Fluke Process Instruments (Raytek) and Siemens Industry (Process Instrumentation). Direct peers are Calex Electronics, Optris GmbH and Thermoteknix. Heitronics (Keller Group sibling / process radiation thermometers) is listed as an others.
Does Pyrometer Instrument have an API?
No public API is recorded for Pyrometer Instrument.
What industry is Pyrometer Instrument in?
Pyrometer Instrument's product category is Industrial Temperature Measurement Instruments. Its primary akta.pro industry code is IMAGAFAA, Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration). Its NAICS code is 334513 and its SIC code is 3823.