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Ludlum Measurements Logo

(800) 622-0828 (US, CA)
(325) 235-5494
(325) 235-4672


After Hours Tech Support
For 375P & 4525 Series:
(800) 717-9506

To search products by model number, enter "m..."
(Ex: Enter "m3" to search for Model 3.)

  • Home
  • Products
    • All Products
    • Health Physics
    • Medical Physics
    • Metal Recycling
    • Monitoring Systems
    • Emergency Response
    • How To Order
    • Connector Types
  • Support
    • Repair & Calibration
    • Training
    • Product Videos
    • Software & Firmware Downloads
    • RadCalc Software
    • Warranty Plans
    • Radiation Resources
    • Gate Monitor Tech Support
  • Documents
    • Product Manuals
    • Detector Reference Chart
    • Product Catalogs
    • Response Curves
    • Test Reports
    • Newsletter Archive
    • Technical Articles
    • End User Statement Form
    • Price List
  • Company
    • About Us
    • Ludlum Divisions
    • Directions to Facilities
    • Exhibition Schedule
    • ISO 9001 Certificate
    • ISO/IEC 17025 Accredited
    • Radioactive Material Licenses
    • Mobile App Privacy Policy
    • Sales Tax Business Licences
    • Export Information
    • Employment Opportunities
  • Contact Us
    • Ludlum Headquarters
    • U.S. Contacts
    • International Contacts
    • Sales Contact Form
Health Physics Medical Physics Metal Recycling Monitoring SystemsEmergency Response

Ludlum Measurements Product Collage

 

Ludlum Measurements, Inc. designs and manufactures radiation detection instruments and technologies. Founded in 1962, we offer a large array of radiation detection instrumentation, developed to help monitor the safety of personnel and the environment. Our instruments are used in applications such as routine personnel and material monitoring, border security, and emergency response situations. We are committed to making the world a safer place to live and work by providing affordable, dependable, and durable equipment.

Ludlum Measurements, Inc. designs and manufactures radiation detection instruments and technologies. Founded in 1962, we offer a large array of radiation detection instrumentation, developed to help monitor the safety of personnel and the environment. Our instruments are used in applications such as routine personnel and material monitoring, border security, and emergency response situations. We are committed to making the world a safer place to live and work by providing affordable, dependable, and durable equipment.

About Our Company

Featured Products

M240

Model 240 Series

Alpha-Beta Floor and Wall Monitor

Learn More

M9-4RF

Model 9-4RF

RF-Immune Ion Chamber Survey Meter

Learn More

m3100

Model 3100

Portable Tritium in Air Monitor

Learn More

m30 7

Model 30-7B

Lightweight Digital Neutron Survey Meter

Learn More

worker w phone instrument7

Model 3000-Series Bluetooth Option

Bluetooth LE® Option for Model 3000 and Model 3001 Survey Meters. Compatible with the Free Lumic Linker and RadResponder Apps. Learn More

m3006 a trans upright

Model 3006

Extended Reach
microR Survey Meter

Learn More

Customer Newsletter

Subscribe to our customer newsletter! Stay informed about Ludlum products and services, and get helpful support tips. Sent out four times a year.
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Repair & Calibration

Ludlum Measurements offers a full service repair and calibration department. We not only repair and calibrate our own instruments but most other manufacturers' instruments as well. Repair sites include the main LMI facility in Sweetwater, Texas and Protean Instrument in Knoxville, Tennessee.

Learn More:

  • Repair & Calibration - LMI (Sweetwater, TX)
  • Repair & Calibration - Protean (Knoxville, TN)
  • FCI Repair & Calibration

Training Courses

Ludlum Measurements offers an intensive two day training course that involves calibration, repair, and maintenance on Ludlum instruments. The training course is held at our main facility, as well as other locations around the country.

Learn More:

  • Ludlum Instrument Repair & Calibration Training
  • Training Course Schedule
  • Training FAQs

Product Videos

Ludlum Measurements has created several overview videos of our most popular products. The full list of videos can be found on our YouTube channel. The individual videos can also be found on the corresponding product pages on our website.

Learn More:

  • Visit Our YouTube Channel

News

  • Model II
  • New HP Catalog
  • Distinguished Engineer
  • 2B Technologies
  • ISO 9001
  • Model II
  • New HP Catalog
  • Distinguished Engineer
  • 2B Technologies
  • ISO 9001

Model II

mIIModel II - Ludlum Measurements' First Meter

We recently reacquired a Ludlum Model II, the first type of survey meter manufactured by Ludlum Measurements. Take a look back with us at the design and technology used in this instrument.

Ludlum Model II

 

New HP Catalog

hp cover web

New Health Physics Catalog

We have a new catalog for the Health Physics product line!

Click here to view or download the PDF version.

 

Distinguished Engineer

Larry Ludlum Award

President of Ludlum Measurements Named Distinguished Engineer

Larry Ludlum, the president of Ludlum Measurements, recently received the 2019 Distinguished Engineer Award from Texas Tech University’s College of Engineering.

Read More

 

2B Technologies

model 202

Acquisition of 2B Technologies

Ludlum Measurements is pleased to announce the acquisition of 2B Technologies, a designer and manufacturer of portable instruments for air monitoring, environmental and industrial applications.

Learn more about 2B Technologies and their products

 

ISO 9001

abs anab iso 9001 2015 2

ISO 9001:2015 Certified

Ludlum Measurements is ISO 9001:2015 certified.

View our certificate

 

Upcoming Exhibitions

6 Jan
Jan 6, 2020 - Jan 8, 2020
ISOE ALARA 2020 Key West, FL - Marriott Key West Beachside Hotel
27 Jan
Jan 27, 2020 - Jan 28, 2020
HPS - Midyear Meeting 2020 Bethesda, MD - Bethesda North Marriott
27 Jan
Jan 27, 2020 - Jan 29, 2020
RP-ALARA Meeting 2020 Key West, FL - Marriott Key West Beachside Hotel
29 Jan
Jan 29, 2020 - Jan 31, 2020
Region I & II RPM Meeting 2020 Key West, FL - Marriott Key West Beachside Hotel

Upcoming Training

11 Feb
Feb 11, 2020 - Feb 12, 2020
Ludlum Instrument Repair & Calibration Training Ludlum Measurements (Sweetwater, TX)
14 Apr
Apr 14, 2020 - Apr 15, 2020
Ludlum Instrument Repair & Calibration Training Ludlum Measurements (Sweetwater, TX)
8 Jun
Jun 8, 2020 - Jun 9, 2020
Ludlum Instrument Repair & Calibration Training Ludlum Measurements (Sweetwater, TX)
11 Aug
Aug 11, 2020 - Aug 12, 2020
Ludlum Instrument Repair & Calibration Training Ludlum Measurements (Sweetwater, TX)

Ludlum Measurements, Inc.
501 Oak Street
Sweetwater, TX 79556
USA

(800) 622-0828 (US & Canada)
(325) 235-5494
(325) 235-4672

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Training

About Us

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© 2019 Ludlum Measurements, Inc.