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RUS en
+7 (3412) 60-14-39
Business hours: 8 a.m. to 5 p.m.

Radiascan 801M Dosimeter-Radiometer

An instrument for radiation hazard warning concerning the surroundings and individual objects.


  • It professionally measures all 4 radiation types known to science—alpha, beta, gamma, and X-ray!
  • High accuracy of measurements with a verified error of lower than 15 % against 25 % to 30 % for similar instruments!
  • An interval between verifications of 2 years, which saves you money and time for repeated verifications!
  • A bright colour display with an angle of view of 170°!
  • Light and sound alarm!
  • A possibility of integration with a computer!
  • Operation for up to 59 hours in the active mode!
  • The instrument is produced with built-in rechargeable batteries!
  • A function of scheduled radiation monitoring!
Overall dimensions
110x60x23 mm
110 g
Sensor type
Beta 1-1 Geiger–Müller sensor
Dose indication range
0.001 to 1,000 mSv
Dose rate indication range
0.01 to 10,000 µSv/hour
Photon emission energy range
65 to 3,000 keV
Log capacity, records, min.
Power supply via USB
Power cells
2 rechargeable or nonrechargeable AAA batteries
Indication means
Colour OLED display; light and sound alarm
Operating temperature range
Minus 20 °C to +50 °C
The ST Microelectronics processor based on the ARM Cortex-M3 core

The RadiaScan 801M has characteristics of a professional dosimeter. The device is easy to use and provided with software for data transfer to a personal computer. It was developed by Russian engineers.

Device Description

The RadiaScan 801M Dosimeter-Radiometer measures the ambient dose equivalent (ADE), the ambient dose equivalent rate (ADER), gamma rays, X-rays, and flux density of beta-particles from domestic and industrial sources.

The instrument houses a special detector that measures ionizing radiation. The dosimeter is also equipped with a loudspeaker for an audible signal, microcontrollers, and a battery (power cells). The device operation is based on a principle of physics—transformation of radiations (gamma, X-ray, beta particles) into electrical impulses.

Generated signals differ in their amplitude and length. They arrive at a registration circuit responsible for demonstration of the received data on the device’s display. While measurement is in progress, the results may continuously vary. The data are automatically averaged, with the error being within a range of 0.95.

Radiascan 801M Purpose

The Beta 1-1 sensor is designed to check for alpha, beta, gamma, and X-ray radiation. It shows accuracy in scanning of each individual radiation type. The professional RadiaScan 801M dosimeter is a portable device for scanning the radiation background indoors and in the environment as well as for looking for radioactive elements and objects in the surroundings.

When the readings are exceeded, the RadiaScan 801M dosimeter alerts thereto with an audible signal, which can be disabled in its settings if necessary. The GAMMA mode is the main mode of the device and is automatically selected once the device is turned on. Measurement can be started after the relevant button is pressed. Measurement ends either automatically or after the relevant button is pressed.

Device Features

The RadiaScan 801M with state verification is the only device that allows you to evaluate radiation contamination of food. This possibility is implemented via a special software algorithm that compares the background radiation and that from an individual object. A product contaminated with radiation poses a considerable threat to health. Having entered the body, the particles have an adverse effect and cause chronic diseases.

Our country has quite a few territories used for agricultural purposes that have a high radiation background. Crops grown there are dangerous to humans. Reviews of RadiaScan 801M dosimeter buyers prove that contaminated areas may include mushroom and berry picking places. It is better to spend a few seconds to make certain of complete safety.

Radiascan 801M Specifications

Before buying a dosimeter, one should match up the price and basic specifications. The device is equipped with a bright display with a wide angle of view (170 degrees). The received information is easy to read for the user. The screen size is 1.8 inches.

The RadiaScan 801M dosimeter is able to operate continuously for 10 hours at the screen contrast of 50 % and background radiation of 0.30 µSv/hour. Two AAA batteries are used as power cells. At power supply via a USB port, the operating time is unlimited. The specifications are as follows:

  • Geiger–Müller sensor—Beta 1-1;
  • measurement range (µR/hour)—1,000,000. 0.01 to 10,000;
  • power cell—2 AAA batteries/via a USB port;
  • external software—yes;
  • a possibility of connection to a PC;
  • weight—110 g;
  • dimensions (mm)—110x60x23;
  • housing colour—white;
  • country of origin—Russian Federation;
  • warranty period—2 years.

Unlike other dosimeters, the RadiaScan 801M limit of error is within a range of ±3 %. It depends on humidity in the room and operating conditions.

Dosimeter’s Advantages

The RadiaScan 801M is a professional dosimeter to be used for obtaining a legally valid expert opinion. The dosimeter error is 15 % (vs 25 % to 30 % in similar devices). Specifications of the device are confirmed by a state verification certificate, which is included in the complete set.

An interval between verifications of 2 years saves buyers their money for metrological expert examinations. Dosimeters on the market that are produced by other manufacturers shall be verified every 12 to 18 months, depending on a particular model. The RadiaScan 801M has parameters as follows:

  1. An extended warranty period.
  2. A Beta 1-1 sensor, which is used in professional measurements and is able to take high accuracy measurements of alpha, beta, and gamma radiation.
  3. A 32-bit microcontroller with a high-power processor and an ARM Cortex-M3 core. Accelerated processing, which will allow you to use complex computational algorithms.
  4. The measurement range 10 times larger as compared to other dosimeters. The range is up to 1,000,000 µR/hour or 10,000 µSv/hour.
  5. Software specially developed for PC connection.

The software will allow you to adjust the instrument, to work with a readings log, and to analyze the data. The RadiaScan 801M engineering mode will allow you to add new options on a regular basis by updating the firmware (it can be downloaded from the manufacturer’s website).

Use of the Instrument

Use of the RadiaScan 801M depends on the mode in which it is operating. There are 2 types of measurements—in the manual mode and in the automatic mode. Automatic scanning starts immediately after turning the instrument on and runs continuously. When you switch to another mode, the measuring process stops. According to the manual, the dosimeter can operate in 5 modes.

  1. The Gamma mode is the main operation mode to which the instrument goes as soon as it is turned on; it measures the radiation ADE and ADER.
  2. The Search mode is required for detecting contaminations and radiation sources in the surroundings. When in this mode, the instrument promptly responds to background fluctuations, but accuracy of measurements being taken gets lower.
  3. The Beta mode will help you to determine the particle flux density per time interval.
  4. The Alpha mode evaluates the alpha-particles flux density in two measurements. The measurement can be taken in large intervals—from several minutes to several hours.
  5. The Detection mode is suitable for searching for contaminations on food items.

If the threshold is exceeded during the current scanning or when a radiation source is detected, the RadiaScan 801M generates an alarm sound as a series of signals with a specific tone, depending on features of the selected mode. On the manufacturer’s official website, customer testimonials provide evidence of the device effectiveness.

Joint development with Scan-Electronics LLC.