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This section provides an overview for dosimeters as well as their applications and principles. Also, please take a look at the list of 15 dosimeter manufacturers and their company rankings. Here are the top-ranked dosimeter companies as of December, 2024: 1.Far West Technology, Inc., 2.S.E. International, Inc, 3.ECOTEST.
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A dosimeter is a measuring instrument used to measure the amount of radiation.
Instruments used for measuring radiation are commonly referred to as dosimeters, radiation measuring instruments, survey meters, and more. Dosimeters encompass a wide range of measuring instruments, including those with and without mechanical structures.
Some dosimeters, such as glass dosimeters, thermoluminescence dosimeters, and photoluminescence dosimeters, utilize radiation-induced changes in materials. These dosimeters do not require a power source when measuring radiation. Due to their lightweight nature, they can be worn by individuals for routine monitoring of radiation exposure. Such wearable dosimeters are commonly referred to as personal dosimeters.
In contrast, semiconductor dosimeters, which require a power supply, are also used as personal dosimeters. This is because they can be manufactured to be as small as electronic thermometers.
The term "radiation measuring instrument" is often used interchangeably with "dosimeter." However, a survey meter is a specialized instrument primarily used for measuring (surveying) radiation levels in specific areas or surfaces to assess radiation contamination.
Dosimeters are employed to measure long-term radiation exposure in various aspects of daily life and in occupational settings involving potential radiation exposure.
Strict radiation control measures are mandated by law in medical facilities, research facilities, industrial sectors, and other settings where radiation is utilized. Medical facilities may encounter radiation during X-ray and CT imaging procedures, while nuclear facilities may have radiation exposure risks associated with nuclear reactor operation, nuclear fuel handling, and radioactive material management.
Given the potential health hazards of radiation exposure, workers in radiation-prone environments are required to wear personal dosimeters during tasks involving radiation.
Dosimeters are measuring instruments designed to measure the "dose" of radiation.
This "dose" encompasses various indicators, including:
Dosimeters directly measure the "number" of radiation "rays." To assess the various types of doses mentioned above, dosimeters are designed to differentiate and detect different types of radiation. By measuring the number of radiation "rays" for each type and considering their respective effects on the human body, it becomes possible to evaluate the overall impact of radiation exposure.
Personal dosimeters typically display the effective dose equivalent (unit: Sv sievert). While assessing the effective dose is ideal for evaluating radiation's impact on the human body, it is often challenging to measure this dose in real-time. Therefore, the effective dose equivalent, a practical measure, is commonly used for actual radiation monitoring.
However, because a significant amount of radiation exposure in a short time can pose health risks, some dosimeters can also measure the dose equivalent rate (measured in Sv/h), representing the effective dose equivalent per hour. In workplaces where radiation is used, the effective dose for workers is calculated based on the measured effective dose equivalent.
Various types of radiation exist, including neutron, alpha, beta, gamma, and X-rays, each with distinct characteristics and varying effects on the human body. Glass, thermoluminescence, and photostimulable luminescence dosimeters are capable of detecting β-rays, γ-rays, and X-rays.
Glass dosimeters rely on the phenomenon where irradiated glass emits fluorescence when exposed to ultraviolet light.
Thermoluminescence dosimeters leverage the thermoluminescence phenomenon of solids. This phenomenon involves the emission of light by a substance, such as a phosphor, when heated after being irradiated by an external radiation source.
Photostimulated luminescence dosimeters operate based on the photostimulated luminescence phenomenon, wherein electrons in a metastable state absorb light energy and return to their ground state after exposure to radiation.
Semiconductor dosimeters function on the principle that when a material is ionized by radiation, an electric current flows through a semiconductor.
The primary consideration when selecting a dosimeter is choosing one suitable for the type of radiation to be measured. Dosimeters designed for β- and γ-rays may differ from those intended for X-rays, and product specifications for X-rays can vary based on energy levels.
The aforementioned three types are ideal for long-term radiation monitoring. They do not provide immediate radiation dose readings on the spot but require processing and measurement of accumulated radiation doses. This approach is known as passive radiation monitoring. In contemporary practice, specialized companies typically handle this measurement.
Although these dosimeters do not offer immediate radiation dose readings, they are highly sensitive and well-suited for radiation monitoring based on cumulative exposure over several months. Additionally, vendors can provide records of radiation doses, enhancing convenience.
Semiconductor dosimeters are suitable for situations where substantial radiation exposure is anticipated within a short timeframe, and immediate radiation dose readings are required. These dosimeters provide real-time measurements and are referred to as active dosimeters. Some models display the dose equivalent, which is the dose per hour, and emit warnings when the dose equivalent exceeds predefined levels. Consider whether these functions are necessary when selecting a dosimeter.
However, certain semiconductor dosimeters have limited data storage capacity in the main unit. In such cases, consideration should be given to how dose data will be recorded. Many organizations opt for a combination of active and passive dosimeters to monitor exposure doses during work and manage long-term radiation control effectively.
*Including some distributors, etc.
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S.E. International, Inc., founded in 1979 as Solar Electronics, is an manufacturer based in Summertown, Tennessee, specializing in providing radiation detection equipment. The company’s featured products are offered under the Radiation Alert brand, encompassing analog & digital radiation detectors, radiation area monitors, dosimetry solutions, radiation response kits, radiation spectrum analyzers, as well as related accessories and software. These products find application in various sectors, particularly within environments where radioactive presence is a concern, which include healthcare, government & security, laboratories & educational institutions, nuclear, and public safety. The company also provides a range of services, including calibration and repair.
Far West Technology, Inc., headquartered in the United States, is a manufacturer specializing in radiation measuring products. Established in 1971, the company serves a range of industries including nuclear, physics, medical, and materials fields. Its products encompass dosimetry solutions, detectors for measuring radiation and LET, as well as health physics instruments used for personnel protection. The company employs expertise in chemistry, physics, and electronics to create instruments that measure gamma, beta, alpha, neutron, and X-ray radiation.
LANDAUER is a manufacturer that specializes in radiation measurement and monitoring solutions based in the United States. Founded in 1954, the company offers a comprehensive range of radiation dosimetry products and services. Its offerings include personal dosimeters, area monitors, environmental monitoring solutions, and consulting services. These products and services are utilized in industries such as healthcare, nuclear power, industrial applications, and more. By providing accurate radiation measurement tools, the company helps organizations ensure the safety of workers and the environment in radiation-prone settings.
Ludlum Measurements, Inc., founded in Sweetwater, TX in 1962 is a manufacturer of radiation detection instruments and technologies. The company's product portfolio includes Portable Survey Meters, Personal Radiation Meters, Benchtop Meters, Scalers / Counters and Pulsers. Their products are used are in applications such as routine personnel and material monitoring, border security, and emergency response situations. The company serves markets including Medical and Healthcare, Aerospace and Defense, Consumer Goods, Industrial Manufacturing and Construction and Building. The company also offers services including service repair and calibration, Training Courses, and a full list of product videos.
Mirion Technologies, Inc., established in 2005 and headquartered in Atlanta, Georgia, USA, is a global service provider in radiation safety, science, and medicine. With a rich history dating back to its origins between 1950 and 2004, Mirion's journey has included expansion into healthcare and ongoing advancements in radiation safety technologies. The company’s products and services are aimed at protecting people and the planet from the harmful effects of ionizing radiation. With a diverse portfolio of products and services, Mirion serves across various end markets, from radiation detection and measurement to diagnostic imaging and radiation therapy and more.
Casella CEL, Inc., founded in the UK in 1799, is a manufacturer of occupational and environmental monitoring equipment for the benefit of workers' health. The company's product portfolio includes noise monitoring, dust monitoring, vibration monitoring, perimeter monitoring, and boundary monitoring solutions. The company serves industries such as manufacturing, construction, mining, and public facilities to assess exposure levels to improve worker and community health. It uses eminent figures including David Livingstone and Charles Darwin with instrumentation for exploration and scientific work.
Pulsar Instruments Plc is a British manufacturer specializing in noise measurement equipment established in 1969 and based in Yorkshire, England. The company produces various sound level meters, vibration meters, and acoustic calibrators for monitoring or measuring noise levels. It also offers personal noise exposure meters, noise activated warning signs that signal when wearing hearing protection is necessary, and audiometry equipment for hearing screening purposes. The company provides various training courses, as well as product recalibration and equipment rental services.
Harwell Dosimeters Ltd is a manufacturer specializing in radiation measurement and monitoring solutions. Established in 1960, the company offers a wide range of radiation dosimetry products and services. Its portfolio includes personal dosimeters, area monitors, environmental monitoring solutions, and more. These products find applications in industries such as healthcare, nuclear power, research, and industrial settings. The company offer services that ensure the safety of personnel and environments exposed to radiation.
Polimaster Holdings Corporation, established in 2004 and headquartered in Sterling, Virginia, United States, is a radiation control equipment and instrument manufacturer and supplier. The company's products include X-ray and gamma radiation dosimeters, radiation portal monitors, and personal radiation detectors. It also supplies radion identification devices, hand-held radiation monitors, and mobile detection systems. These products are used in various sectors, including nuclear power plants, medical facilities, and industrial safety systems, and are available through a network of distributors across Latin America, Europe, Asia.
Simpson Electric Company Inc., established in 1927 and headquartered in Lac Du Flambeau, Wisconsin, United States, is a manufacturer of electrical meters, panels, and test equipment. The company's products include smart meters, advanced digital panel meters, and analog panel meters. These products are used in electrical systems and components to monitor and test power output or by maintenance professionals to inspect electrical systems. It offers contract manufacturing for punch pressing, compression molding, and wave soldering and serves industries that include power management, new energy, and automotive.
CESVA instruments s.l.u., founded in 1969, is a manufacturer and supplier based in Barcelona, Spain, developing precision microphones and acoustic instruments. With its own research and development department and patented products, the company offers sound-level meters, noise sensors, and calibrators. Other products, such as logger-limiters, vibrometers, and transducers, are also part of its product range. These products are distributed to more than 40 countries worldwide, utilized in airborne and impact sound insulation, permanent noise monitoring in smart city infrastructures, and industrial noise and vibration measurement for health risk assessment. The company also develops software applications to complement all its products.
ECOTEST is a manufacturer and distributor of radiation detection and measurement equipment based in Ukraine. Established in 1996, it offers a range of products including portable dosimeters, radiation survey meters, spectrometers and many more. These tools cater to various industries such as nuclear power, medicine, and environmental protection. Using advanced technology, the company's instruments provide accurate radiation detection for informed decision-making in safety and monitoring for companies across 70 countries.
Tracerco is a mafufacturer specialized in process diagnostics and measurement solutions. Founded in 1958, the company operates from Billingham, England. The company specializes in utilizing radiation technology, particularly gamma radiation and neutron sources, to provide critical process data. Its solutions are applied in various industries, including oil and gas, petrochemicals, refining, pharmaceuticals, and water treatment, enhancing efficiency, safety, and regulatory compliance. The company's portfolio includes Tru-Grid Diagnostic Surveys, PED Scanner, Level and Interface Measurement Solutions and Radiometric Sensors.
ShangHai Ergonomics Detecting Instrument Co., Ltd., is a supplier established in 2008 and based in China that specializes in intelligent instruments for the nuclear industry. The company's products are utilized in diverse sectors such as healthcare, emergency management, and environmental protection. Its offerings include radiation monitoring equipment like channel-type vehicle and pedestrian monitors, regional monitoring systems, portable air samplers, and handheld radiation detectors. These tools cater to needs such as identifying excessive radioactive substances in vehicles, real-time monitoring of X and gamma rays, and measuring radioactive aerosols and iodine in the air.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Far West Technology, Inc. |
16.2%
|
| 2 | S.E. International, Inc |
11.5%
|
| 3 | ECOTEST |
9.2%
|
| 4 | Harwell Dosimeters Ltd |
9.2%
|
| 5 | CGN |
8.5%
|
| 6 | ShangHai Ergonomics Detecting Instrument Co., Ltd. |
8.5%
|
| 7 | Ludlum Measurements, Inc. |
6.9%
|
| 8 | CESVA INSTRUMENTS SLU |
6.2%
|
| 9 | LANDAUER |
6.2%
|
| 10 | Casella CEL, Inc. |
5.4%
|
Derivation Method
The ranking is calculated based on the click share within the dosimeter page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 38.5% |
|
United Kingdom
|
4 | 30.8% |
|
China
|
2 | 15.4% |
|
Spain
|
1 | 7.7% |
|
Ukraine
|
1 | 7.7% |
33 products found
33 products
Japan Shielding Giken Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Very Fast Response
This is a portable radiation measuring device detection unit collimator that can be used for various purposes, such as measuring the effectiveness ...
Yagyu Shokai Co., Ltd.
30+ people viewing
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Very Fast Response
■Features - When radiation (gamma rays) is detected, a buzzer and detection mark will notify you. - A buzzer will notify you when the dose is high...
Yagyu Shokai Co., Ltd.
30+ people viewing
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Very Fast Response
■Features - Equipped with a high-performance scintillator type sensor, enabling higher-grade measurements. - Quick measurements are possible just b...
SANKO ELECTRONIC LABORATORY CO.,LTD
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Standard Response
■ Features ・ Measure invisible radiation ・ Anyone can easily measure the spatial radiation dose
2 models listed
Jpi Japan Co., Ltd.
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Last viewed: 6 hours ago
Standard Response
Quart's dosimeters for diagnostic equipment and dosimeters for CT pursue high user convenience. Thanks to the manufacturer's specialized technology...
Jpi Japan Co., Ltd.
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Standard Response
Quart's dosimeters for diagnostic equipment and dosimeters for CT pursue high user convenience. Thanks to the manufacturer's specialized technology...
Jpi Japan Co., Ltd.
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Last viewed: 1 day ago
Standard Response
Quart's dosimeters for diagnostic equipment and dosimeters for CT pursue high user convenience. Thanks to the manufacturer's specialized technology...
Jpi Japan Co., Ltd.
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Standard Response
Quart's X-ray field meter and high-precision voltage/current meter are designed to be easy to use and require no operator effort. It can be used wi...
Jpi Japan Co., Ltd.
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Standard Response
By using a measuring device and a display device, you can easily manage the dose even with existing equipment. It is also possible to send measurem...
Jpi Japan Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Standard Response
By using a measuring device and a display device, you can easily manage the dose even with existing equipment. It is also possible to send measurem...
Jpi Japan Co., Ltd.
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Standard Response
By using a measuring device and a display device, you can easily manage the dose even with existing equipment. It is also possible to send measurem...
Jpi Japan Co., Ltd.
30+ people viewing
Last viewed: 17 hours ago
Standard Response
By using a measuring device and a display device, you can easily manage the dose even with existing equipment. It is also possible to send measurem...
Jpi Japan Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Standard Response
By using a measuring device and a display device, you can easily manage the dose even with existing equipment. It is also possible to send measurem...
Jpi Japan Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Standard Response
Measurement data can be sent to the X-ray system using just the measuring device. By using the ASCII protocol, you can also configure the measuring...
Jpi Japan Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
Standard Response
Measurement data can be sent to the X-ray system using just the measuring device. By using the ASCII protocol, you can also configure the measuring...
Jpi Japan Co., Ltd.
20+ people viewing
Last viewed: 1 day ago
Standard Response
Measurement data can be sent to the X-ray system using just the measuring device. By using the ASCII protocol, you can also configure the measuring...
Jpi Japan Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
Standard Response
Measurement data can be sent to the X-ray system using just the measuring device. By using the ASCII protocol, you can also configure the measuring...
Jpi Japan Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
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Quart's dosimeters for diagnostic equipment and dosimeters for CT pursue high user convenience. Thanks to the manufacturer's specialized technology...
Jpi Japan Co., Ltd.
30+ people viewing
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Chiyoda Technol Co., Ltd.
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5.0 Company Review
This is an electronic pocket dosimeter that measures the cumulative radiation dose received by an individual. This is a device that measures person...
3 models listed
Chiyoda Technol Co., Ltd.
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Last viewed: 1 day ago
5.0 Company Review
■A small dosimeter that records data and records. You can feel safe because you can check with your own eyes the cumulative dose for the previous d...
Aynac System Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
■The radiation dose measurement system proposed by Aynac System is in operation. This work involves constructing a temporary treatment facility wit...
