Company lists · Data refreshed September 2026

Top 25 Process instrumentation companies based in the United States

Name: Process instrumentation companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 882 companies tracked

RevenueBase identified 882 process instrumentation companies headquartered in the United States as of September 2026 and tracks 22,203 professional contacts across them, including 8,616 with verified work emails. Houston is the largest hub.

This list covers process instrumentation companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

882Companies

22,203Contacts tracked

8,616Verified emails

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The 25 largest process instrumentation companies based in the United States

Ranked by team size

Top 25 of 882 process instrumentation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to process instrumentation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	TSI Incorporated	Indirect evidence	Shoreview, MN, United StatesHQ checked Sep 20, 2026	501-1,000	1,211 contacts →
	Indirect evidence “TSI Incorporated serves a global market by investigating, identifying and solving measurement problems.” Source: RevenueBase Database · checked Sep 20, 2026
2	PCB Piezotronics, INC	Indirect evidence	Depew, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	778 contacts →
	Indirect evidence “PCB manufactures vibration, pressure, force, strain, shock, and acoustic sensors used by design engineers and predictive maintenance professionals worldwide for test, measurement…” Source: RevenueBase Database · checked Sep 20, 2026
3	Omega Engineering	Indirect evidence	Norwalk, CT, United StatesHQ checked Sep 20, 2026	501-1,000	582 contacts →
	Indirect evidence “Omega sells more than products used to measure temperature and humidity, flow and level, and pressure.” Source: RevenueBase Database · checked Sep 20, 2026
4	Campbell Scientific	Indirect evidence	Logan, UT, United StatesHQ checked Sep 20, 2026	201-500	560 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
5	Dwyeromega	Strong evidence	Michigan City, IN, United StatesHQ checked Sep 20, 2026	1,001-5,000	557 contacts →
	Strong evidence “DwyerOmega is a trusted global leader in sensing, instrumentation, and process control solutions, supporting HVAC, industrial, manufacturing, and research applications where…” Source: RevenueBase Database · checked Sep 20, 2026
6	Contech Control Services	Partial evidence	La Porte, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	512 contacts →
	Partial evidence “When we formed Contech in 1980, our goal was to create a specialized engineering and construction company to provide a full range of system independent services for process…” Source: RevenueBase Database · checked Sep 20, 2026
7	Dresser, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	448 contacts →
	Partial evidence “Dresser Utility Solutions (formerly Dresser, Inc.) is a leading provider of measurement, instrumentation, piping solutions and over pressure protection devices to the natural gas…” Source: RevenueBase Database · checked Sep 20, 2026
8	Vega Americas, INC	Indirect evidence	Mason, OH, United StatesHQ checked Sep 20, 2026	201-500	432 contacts →
	Indirect evidence “For more than 70 years, VEGA Americas, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
9	Ashcroft INC	Indirect evidence	Stratford, CT, United StatesHQ checked Sep 20, 2026	1,001-5,000	381 contacts →
	Indirect evidence “Ashcroft \| Industrial Measurement & Control Solutions For over 170 years, Ashcroft has been the trusted global resource for industrial measurement and control.” Source: RevenueBase Database · checked Sep 20, 2026
10	Nordson Measurement & Control Solutions	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 20, 2026	201-500	244 contacts →
	Indirect evidence “Nordson Measurement & Control Solutions (formerly NDC Technologies) is a leading global provider of intelligent, connected gauging systems.” Source: RevenueBase Database · checked Sep 20, 2026
11	Proconex	Partial evidence	Royersford, PA, United StatesHQ checked Sep 20, 2026	201-500	238 contacts →
	Partial evidence “For over 75 years, Proconex has been a leading provider of Process Automation Control Systems, Valves and Control Devices, and related technologies and services.” Source: RevenueBase Database · checked Sep 20, 2026
12	Relevant Industrial, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	209 contacts →
	Partial evidence “Relevant Solutions is the preferred provider of process equipment solutions.” Source: RevenueBase Database · checked Sep 20, 2026
13	GIL Automations	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	209 contacts →
	Partial evidence “GIL Automation is a leading provider of industrial products and services related to Instrumentation, Measurement, Safety, Electrical, Automation and Mechanical Systems.” Source: RevenueBase Database · checked Sep 20, 2026
14	Panametrics	Indirect evidence	Billerica, MA, United StatesHQ checked Sep 20, 2026	501-1,000	205 contacts →
	Indirect evidence “Panametrics develops solutions for moisture, oxygen, liquid flow, and gas flow measurement, with proven technologies that are known across many industries, including oil and gas.” Source: RevenueBase Database · checked Sep 20, 2026
15	SOR Controls Group	Indirect evidence	Lenexa, KS, United StatesHQ checked Sep 20, 2026	51-200	186 contacts →
	Indirect evidence “SOR Controls Group is a global leader in the design and manufacture of measurement and control devices and sampling systems under the brands of SOR, SSi Temperature Sensors and…” Source: RevenueBase Database · checked Sep 20, 2026
16	Guidant Measurement	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	175 contacts →
	Indirect evidence “Boasting three core businesses – Measurement Products & Accessories, Terminal Management & Automation, and Metering Systems - Guidant is the leader in liquids custody transfer…” Source: RevenueBase Database · checked Sep 20, 2026
17	BBP	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 20, 2026	201-500	169 contacts →
	Partial evidence “For over 30 years, BBP has served the Southeast region as a manufacturer's representative and distributor of industrial instrumentation, valves, analytical products, and control…” Source: RevenueBase Database · checked Sep 20, 2026
18	Control Associates, INC	Partial evidence	Allendale, NJ, United StatesHQ checked Sep 20, 2026	51-200	161 contacts →
	Partial evidence “Control Associates is a provider of control systems, valves, instrumentation, pressure management, asset reliability, MES, PAT, systems integration and data management solutions…” Source: RevenueBase Database · checked Sep 20, 2026
19	Airmar Technology Corporation	Indirect evidence	Milford, NH, United StatesHQ checked Sep 20, 2026	201-500	155 contacts →
	Indirect evidence “AIRMAR® Technology Corporation is a world leader in the design and manufacture of high-performance sensors for marine and industrial applications.” Source: RevenueBase Database · checked Sep 20, 2026
20	Daily Thermetrics	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	151 contacts →
	Partial evidence “Since 1973, Daily Thermetrics has provided the global process industries with category-leading temperature measurement solutions.” Source: RevenueBase Database · checked Sep 20, 2026
21	Mccrometer, INC	Indirect evidence	Hemet, CA, United StatesHQ checked Sep 20, 2026	201-500	147 contacts →
	Indirect evidence “McCrometer is a global leader in providing flow measurement solutions.” Source: RevenueBase Database · checked Sep 20, 2026
22	Rexa, INC	Partial evidence	West Bridgewater, MA, United StatesHQ checked Sep 20, 2026	51-200	144 contacts →
	Partial evidence “At REXA, we provide customer-specific engineered process control solutions.” Source: RevenueBase Database · checked Sep 20, 2026
23	Barksdale Control Products	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	201-500	141 contacts →
	Indirect evidence “Barksdale Control Products specializes in designing and manufacturing high-quality solutions to meet the demands of modern industries.” Source: RevenueBase Database · checked Sep 20, 2026
24	Clark-Reliance	Indirect evidence	Strongsville, OH, United StatesHQ checked Sep 20, 2026	201-500	136 contacts →
	Indirect evidence “Clark-Reliance® continues to be the global leader in the level indication and control, sightflow indication, and filtration and separation industries.” Source: RevenueBase Database · checked Sep 20, 2026
25	George E. Booth CO	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 20, 2026	51-200	135 contacts →
	Indirect evidence “As a proud third-generation family-owned business, George E.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: process instrumentation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names process instrumentation companies.
Partial evidence: Its own public description names part of process instrumentation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name process instrumentation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 882 process instrumentation companies based in the United States

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Process instrumentation companies based in the United States at a glance

As of Sep 20, 2026

38.8%Verified-email coverage

25.2Average contacts per company

11-50Median size (employees)

5.7%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

305

11-50

331

51-200

172

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 882 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among process instrumentation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “process instrumentation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names process instrumentation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among process instrumentation companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 8,616 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Process instrumentation companies by metro

Process instrumentation companies in Houston50

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names process instrumentation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many process instrumentation companies are there based in the United States?

RevenueBase identified 882 process instrumentation companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

TSI Incorporated, headquartered in Shoreview, tops this list with the largest team on record.

Which city has the most process instrumentation companies?

Houston leads with 50 headquartered companies, followed by Cincinnati (8) and Milford (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 8,616 verified decision-maker contacts tracked across these 882 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.