When buying a dosimeter one might get lost in the options available on the market. So today we will discuss what one should look for when buying a new dosimeter.
We are assuming that the reader of this article is aware of the working principles, applications, and different types of dosimeters available. However, if you are not aware of the following concepts, then you can read our article that explains the working and other important features of a dosimeter. The dosimeter models that we will be focusing on in this guide are more of a Geiger counter meter which converts the count rate to dose rate or Sievert (Sv/h) to be more specific.
Let’s do a brief recap of what a dosimeter is.
A radiation dosimeter is a device, instrument, or system that measures or analyses the quantities of exposure, absorbed dose, equivalent dose, or related quantities of ionizing radiation, either directly or indirectly. They can be clipped to your pockets and be worn, hence making them portable and compact. These devices are mostly used by professionals in the nuclear, chemical, and medical industry. For further information, you can read our article mentioned above.
After analyzing and testing multiple types of dosimeters we have narrowed down the 10 choices for you, each of them offering unique features according to type of application, price range, and reviews.
Our Top 3 Picks of Best Dosimeter
1. SOEKS Quantum Dosimeter (Top Rated)
The SOEKS Quantum Professional radiation detector dosimeter ranks first on our list. This dosimeter offers almost the same type of specifications as the EcoLifePro 1 below, however, there are features that set them apart.
Sensor: SBM-20-1 tube sensor
Soeks Quantum is more powerful due to employing dual SBM-20-1 Geiger tubes for detecting the radiations of Alpha, beta, gamma, and X-ray. The Range of indicated background radiation level is up to 1000 µSv/h radiation level that can be sensed by this dosimeter.
The measurement range of cumulative dose accumulation (the total amount of radiation administered throughout a course of radiation treatments) is up to 1000 Sv and the dose accumulation time is up to 999 days. This important feature allows you to keep track of that dose accumulation.
If you carry it outdoor, it has a sufficient measurement time interval. The time of measurement by this device is up to 10 seconds. That means every 10 seconds, it will update the reading.
Display and other features
The SOEKS Quantum has a 128 x 160 color TFT screen. In terms of power supply, it requires 2 AAA size batteries to operate it with a voltage range of 1.9 to 3.0 Volts. Nicely, those batteries have been included in the purchasing package. For estimation, this device can run continuously for up to 700 hours.
For dimension, the overall dimensions of the SOEKS Quantum are 130 × 52 × 18 millimeters (height × width × thickness). In comparison with the EcoLifePro1, this device has a larger footprint mainly due to its larger screen.
Most importantly, this device can be your best personal dosimeter because it is also equipped with alerting features such as vibration, alarm, and notifications on its screen. The vibration is important to let the dosimeter works alerting you silently while it’s in your pocket.
The SOEKS Quantum is a little bit expensive though when compared to others on the list, but it does offer a larger screen, higher accuracy, and precision rate thanks to its upgraded processor which is also partly responsible for its higher price.
2. EcoLifePro 1 Dosimeter
From our 10 Picks the EcoLifePro 1 is our second best choice since the device provides a high range for dose rate measurement and is a very affordable option. The EcoLifePro 1 dosimeter is portable, compact, and comes with a variety of unique features.
Sensor: SBM-20 tube sensor
Designed by the Russian military NOS Geiger Tube SBM-20 is used for ionizing radiation detection. It can detect beta and gamma ionizing radiation.
Detector Sensitivity & Dose range
Since this dosimeter is using two SBM-20 tube sensors, the EcoLifePro1 is a highly sensitive device. It can detect Alpha, Beta & Gamma particles. The energy level of the radiation that can be detected by this detector is between the ranges of 0.05 up to 3 MeV.
The ambient Dose range scale for this dosimeter has a range of 0 to 10000µSv. The EcoLifePro 1 has a dose rate of 1000µSv/h using the conversion 1 µSv/h = 5cps (Counts per second) we will have 5000 counts or decays per second. This detector has an error percentage of ± 25% in all modes. It only takes 10 seconds for this device to measure the radiation.
Display and other features
The EcoLifePro 1 features an OLED 1×0.5 inch colored screen. The software on this device is user-friendly making it easy for users to navigate through the setting and allows them to easily configure this device. The interface is compatible with both the English and Russian language. The Device comes with an alert system that signals using the buzzer or the vibration motor within this device. The device measures only 105 x 58 x 18.5 millimeters and weighs 110 grams. It requires two AAA batteries to operate it and comes with a USB cable and a charging brick.
The EcoLifePro1 offers many features in such an affordable price, it is a perfect instrument for someone who is a total beginner as its UI and operating system are very easy to navigate through.
3. RADEX ONE Dosimeter
Finally our 3rd best choice for this guide, it’s the RADEX ONE dosimeter. The device has a clean minimal look to it. It has a very compact and linear design that allows user to easily carry it around. It is specifically designed for a non-professional consumer with little to no experience with such devices. The device is also one of the most affordable options after the EcoLifePro 1 dosimeter.
The RADEX ONE features a dose rate range of 0.05 to 999 µSv/h, and a received dosage range of 0 to 9990000 µSv. This dosimeter has a measurement cycle of 10 seconds with 15% margin of error. The RADEX ONE is capable of measuring Alpha, Beta and Gamma radiations it has gamma radiation energy range of 0.1 to 1.25 MeV, X-ray range of 0.03 to 3.00 MeV, and Beta radiation range of 0.25 to 3.50 MeV. This device can continuously operate for 3000 hours. This dosimeter can sustain a maximum temperature of 50 Degrees Celsius and a minimum of -20 Degrees Celsius.
The device comes with radiation search mode and can also transfer all the gathered data onto your PC via a USB cable provided. The RADEX ONE comes with ‘alarm’ and ‘vibration’ feature for whenever it senses high level of radiations or if it’s above a set threshold value. The device only weighs about 40 grams has dimensions of 112 x 32 x 23 millimeters (Height x width x depth). Like all the other dosimeters this one also requires AAA batteries to operate.
Things to Consider before Buying Dosimeter
When choosing a dosimeter application is one of the most important factors, since there are many variations of this device available. For nuclear plants and other industry-related applications a high scale, and more complex dosimeter is required, one which has higher accuracy.
For medical purposes accuracy is a more important factor than range, unlike industrial dosimeter which are used to measure higher amounts of radiation levels.
Since this guide is specifically for non-professional individuals, a dosimeter with Geiger tubes should be more than enough to provide you with accurate and precise results all in an affordable price range.
2. The types of radiation that you want to measure
In the Industry professional would want to measure all types of radiations and hence would want a dosimeter equipped with all sensors required to measure Alpha, Beta, and Gamma radiations. In medical industry, X-rays are more common, and hence a dosimeter capable of measuring X-rays would be highly useful. When selecting a dosimeter our priority should be if it can detect beta, gamma and X-rays, since detecting alpha particles can be a challenge for some dosimeters.
3. Range of Dosimeter
For a high radiation level area such as a nuclear plant, a dosimeter with a higher range will be required to measure high levels of radiation. For normal use a dose rate scale range of maximum of 1000 µSv/h should be enough for reference a chest X-ray has a dose of 20 µSv that a person can absorb which is well within the 1000 µSv range for a dosimeter to measure.
4. Additional features
It is very important that a dosimeter must have an alarm feature to alert the user of high radiation areas along with vibration. Aside from that, being able to transfer data to your PC is also of the handy features. Since analyzing the reading results on your computer is much easier, you should also look into this feature when buying a dosimeter. Most importantly, a dosimeter with a dose accumulation reading feature enables its users to easily count the total absorbed radiation (commonly in Sievert) while being on the go. Clip the dosimeter on their pockets to allow it to measure and collect data over time.
It’s clear that we pick Soeks Quantum as it provides you with dose accumulation reading and it can trace your dose accumulation up to 999 days. Aside from that, the features of vibration and alarm can be very helpful to alert you either silently or loudly. These two readings are important if you are looking for dosimeter for personal use or home use. When you are visiting a certain place, you can save this dosimeter in your pocket, allowing you to check all the time how many doses you have absorbed. However, remember that the Dosimeter with Geiger tube doesn’t measure 100% accurately. So, you have to set the alarm below the usual dose limit.
Other related pages:
- Best Geiger Counter Reviews
- How Geiger Counter Works
- How to Calibrate the Geiger Counter with A Known Radiation Source
- How to Read & Use Geiger Counter
- How Accurate is Geiger Counter to Measure Ionizing Radiation?
- What is the Safe Level of Ionizing Radiation for Humans?
- Best Dosimeter Reviews
- List of Instruments to Measure Ionizing Radiation