Welcome to Thermal Instrument Company. Providing flow measurement solutions for 55 years!

Compliant on Greenhouse Gas Emissions Monitoring with Accurate & Reliable Thermal Mass Flow Transmitters

View The Video

Stack and Flare Vent Measurements

An Ideal High Performance Flow Switch for Semi-Conductor and Pharmaceutical Applications on Ultra High Purity Water with Electro-polished contact flow surfaces

Meeting the Tough Requirements in Power Stations and Nuclear Plants


Insertion Probe Meters

Inline Flow Meters

Thermal Mass Flow Switches

62-9 Series Specifications

• Versatile solution for liquid or gas measurement

• Multi-point flow measurement available

• Repeatable rates within +- .2%

• 100:1 turndown range (1000:1 Application dependent)

600-9 Series Specifications

• Unobstructed Path

• 100:1 Turndown range (1000:1 Application dependent)

• Repeatable rates within +- .2%

• Low Pressure drop

• Mass Flow

• Stainless Steel Material Standard

Flow Switch Specifications

• Calibrated to each application

• Mass flow technology

• High Pressure

• In-line model offers unobstructed path

Bringing Over 50 Years of Trusted Flow Measurement Solutions to Our Customers 

With more than a half century of providing best in class flow measurement solutions to the industrial and environmental markets, Thermal Instrument Company has a lot to say for itself when it comes to knowledge and experience on flow.  Let's face it, with 50+ years in business, we have seen just about every application for flow measurement that you can possibly imagine.  And the interesting thing about those application requests is that we have solved a large majority of them with our thermal mass flow metering technology.  Whether your flow application requires measurement on liquids, gases, corrosive media, or even a slurry, Thermal Instrument has a flow meter to reliably and accurately perform the job well.  Our product line consists of micro-processor based electronic / sensor combinations in both remote or integral style mounting.  The sensor probe configurations are either in-line or insertion type designs and the flow rates accomodated are expansive especially with greater than 100:1 turndown ratio.  Thermal Instrument understands that many liquids and gases can be extremely corrosive to standard materials of construction, so we offer the most exotic metals and even high polish finishes for those demanding services.  We can assure you that we have a solution for your application and our experienced staff will be glad to work with you every step of the way from start to finish and beyond. 

All of our in-line Thermal Mass Flow Meters and Flow Switches provide reliable, accurate flow measurement with no obstructions to the actual flow path. Our internal sensing circuit does not come into direct contact with the flow stream and are completely protected from any adverse process conditions. We utilize this technology across our product lines from in-line, to insertion probes, to our flow switches.

Our Thermal Mass Flow Meters are being used every day in a wide variety of applications: Landfills, Flare Gas, Pollution Control, Petrochemical, Chemical Processing, Food and Beverage, Pharmaceutical, SemiConductors, and Power / Utility.

Latest News

Belilove Company Engineers to represent Thermal Instrument in Northern California

Effective February, 2015 TIC is happy to announce that Belilove Company Engineers is the authorized representative of Thermal Instrument Company in the Northern CA and Nevada markets. Belilove Company-Engineers has over 60 years of experience

Read more →

Cost Effective Solution for Vent Flare Gas Measurement

Flare gas systems are most often designed to burn large quantities of gas resulting from an inventory removal method of storage or process units during upset or emergency conditions.Gas well flare measurement These flare gas systems are used throughout the oil & gas industry from upstream process areas at the wellhead sites to the refineries downstream. Measuring vent flare gas can be difficult for traditional flow measurement technologies. Most of the flow rates in these flare gas applications have low flow with an occasional high erratic increase during upset conditions. Some of the adversities encountered in these flow measurement applications...

Read more →

Thermal Instrument Flow Meters Increase Presence on West Coast

Thermal Instrument Company is happy to announce that we have partnered with Engineered Process Controls (headquartered in Woodinville, WA), Innovative Process Controls (headquartered in El Segundo, CA), and H2O Process Systems (headquartered in Honolulu, HI) in an effort to increase brand awareness and grow sales on the west coast. This partnership will allow...

Read more →

Contact Us

Send us a message

Let us help you determine your needs

Find a Sales Rep

Select your state or region to find a sales representative.

Ryan Equipment

Serving Eastern PA, NJ, & DE

PO Box 3232
Easton, PA 18043

David Ryan
Phone: 610-252-6160
Cell: 610-517-2400
Fax: 610-252-6161


M. S. Jacobs & Associates

1 School St., PO Box 93
Batavia, NY 14021
Phone: 585-344-0102
Fax: 585-344-0315


V. F. Controls, Inc.

Serving North Ohio, Western PA (including Pittsburgh and State College), and West Virginia

8619 Tyler Blvd.
Mentor, OH 44060

Jim Weinstein
Phone: 440-974-7757
Fax: 440-974-6766


Flow Control, Inc.

2010 Q Street
Omaha, NE 68107

Richard Watkins
Phone: 402-738-8515
Fax: 402-738-8516


Control Systems West

12857 N.W. Jackson Quarry Dr.
Hillsboro, OR 97124

Rob Boyce
Phone: 503-647-0979
Fax: 503-647-0983


Lesman Instrument, Main Office

135 Bernice Dr.
Bensenville, IL 60106-3366
P: 800-953-7626
P: 630-595-8400
F: 630-595-2386

Lesman Instrument, Butler Office

5160 North 125th Street
Butler, WI 53007-1332
P: 800-837-1700
P: 262-923-1790
F: 262-923-1797

Hatfield and Company, Inc., Dallas Area

2475 Discovery Blvd.
Rockwall, TX 75032
Phone: 972-285-0115
Fax: 972-289-8934
Toll-Free: 800-879-9191

Hatfield and Company, Inc., Austin Area

12416 Hymeadow Dr., #218
Austin, TX 78750
Phone: 512-918-9663
Fax: 512-918-9669
Toll-Free: 800-879-9191 (Rockwall Office)

Hatfield and Company, Inc., Houston Area

11922 Cutten Rd.
Houston, TX 77066
Phone: 281-893-8870
Fax: 281-893-9247
Toll-Free: 800-899-3163

Hatfield and Company, Inc., Longview Area

414 E. Loop 281, #8
Longview, TX 75605
Phone: 903-291-0223
Fax: 903-291-0316
Toll-Free: 800-753-9445

Hatfield and Company, Inc., Odessa Area

1904 W. 3rd
Odessa, TX 79763
Phone: 432-337-4737
Fax: 432-333-9939
Toll-Free: 800-264-3132 or 800-400-4282

Hatfield and Company, Inc., New Orleans, LA

2419 Delaware Ave
Kenner, LA 70062
Phone: 504-469-6432
Fax: 504-468-9474
Toll-Free: 800-999-5788

Hatfield and Company, Inc., Tulsa, OK

5710 E. Admiral Blvd.
Tulsa, OK 74115
Phone: 918-838-9987
Fax: 918-838-1989
Toll-Free: 888-388-7724

Measurement Resources

Serving Southern Texas

5233 IH 37
Suite A-1
Corpus Christi, TX 78408

Clay Hammond
Phone: 361-882-3444
Fax: 361-882-3441
Cell: 361-765-9819


JMC Instruments

9829 E. Easter Ave
Centennial, CO 80112-3723
P: 303-794-8833
F: 303-730-1220


R A Kirby Sales

Serving Ontario, Quebec, Newfoundland and Labrador

200 Viceroy Road, Unit 16
Concord, Ontario L4K 3N8
Phone: 905-738-6225
Fax: 905-738-4355


Sure Flow Products

28265 Beck Rd, Bldg C-11
Wixom, MI 48393

Marty Petrill
Phone: 248-380-3569
Fax: 248-380-3568



Serving South Ohio, Kentucky, So Counties of Indiana

2615 Arbor Tech Drive
Hebron, KY 41048

Mike Maloney
Phone: 859-525-9890
Fax: 859-525-9891

Acrotech Limited

33 Woodbury Dr.
Halifax, Nova Scotia B3M 1Z7
Phone: 902-445-5338
Fax: 902-443-1027

High Tech Engineering Inc.

Serving Puerto Rico and Caribbean Region

P.O. Box 2043
Dorado, PR 00646-00625

Jose A Ciuro
Phone: 787-796-4713
Fax: 787-796-2243


Allée de Chamillé - ZI du Bois des Lots

Frédéric Buskowa
Telephone: +33 (0)4 75 54 86 05
Fax: +33 (0)4 75 54 86 09


Beijing Puttom Instrument Inc

Rm. 901, JinJiYeBld.#2
Sheng Gu Middle Rd
ChaoYang Beijing 100029

March He
Phone: 86-10-64415004
Fax: 86-10-64416692


M&C Engineering

Room 612, A-Dong, Woolim Lions Valley
425 Cheong Cheon-Dong, BuPyeong-Gu
Incheon, 403-911, Korea

Grace Jeong
Phone: 82-32-623-6230
Fax: 82-32-623-6234


Isoil Industria spa

F.lli Gracchi, 27
Cinisello Balsamo (MI)
Italy 20092

Massimo Spotorno
Phone: 0266027.242
Cell: 335-879-7271
Fax: 026123202


Tolar Marketing Communications

Serving the Landfill & Refinery industries

92 Sunrise Lane
Cleveland, GA 30528

Fred Tolar


Tolar Marketing Communications

Serving the Landfill & Refinery industries

92 Sunrise Lane
Cleveland, GA 30528

Fred Tolar
P: 706-809-3019


Eastern Energy Services PTE Ltd.

Serving Southeast Asia

60 Kaki Bukit Place #02-19
Eunos Tech Park Singapore,
SG 415979 Singapore
Telephone: +65-6748 691
Fax: +65-6748 6912


Duncan Co

Serving Northern Iowa, Western Wisconsin, MN, ND, and SD

425 Hoover St. NE
Minneapolis, MN 55413
Phone: 800-677-1776
Fax: 612-331-4735

Lesman Instrument, St. Louis Office

Tom Pataky
Phone: 800-953-7626

King Gage Engineering

119 Uxbridge Road
Mendon, MA 01756

Chris Hack
Phone: (508) 482-0033
Fax: (888) 435-1062


Innovative Process Controls LLC

Serving Southern CA & Las Vegas, NV

400 Continental Blvd.
Sixth Floor
El Segundo, CA 90245

David DiDomizio
CA Phone: 310-414-3700
CA Fax: 310-414-3710
Nevada - P: 702-759-0290 F: 702-759-0289


H2O Process Systems

Serving Hawaii, Guam, and South Pacific US Territories

2419 University Avenue
Honolulu, Hawaii 96822

Milton Choy
Phone: 808-349-8207
Fax: 808-988-2678


Engineered Process Controls

Serving Washington, Oregon, Montana, and Northern Idaho

14522 NE N Woodinville Way
Suite 201
Woodinville, WA 98072

David DiDomizio
Phone: 425-844-8901
Fax: 425-844-8904


W.T. Maye, Inc.

Serving entire state of TN, Western KY, and Northern AL

10805 Kingston Pike
Suite 120
Knoxville, TN 37934

Chip Maye
Phone: 865-622-8811
Fax: 865-622-2331


Durkin Equipment Company

Serving Western Missouri & Kansas

1445 Swift Avenue, N.
Kansas City, MO 64116

Jay Bailey
Phone: 816-421-7722


Belilove Company Engineers

Serving Northern CA and NV

21060 Corsair Blvd.
Hayward, CA 94545

Dave House
P: 510-274-1990
F: 510-274-1999


No sales reps found

It looks like there are no sales reps serving your region. Please contact Thermal Instrument Company directly or fill out our Application Inquiry Form.

Traditional Contact

217 Sterner Mill Road, Trevose, PA 19053
Tel: 215-355-8400    Fax: 215-355-1789
Email: office@thermalinstrument.com

Business Hours: Monday-Friday, 9-5 ET