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Geiger Counters
At PCE-Instruments you will find geiger counters, devices for measuring illumination, electro maGeiger Counters for measuring illumination, electro magnetic fields, solar radiation and solar activity.gnetic fields, solar radiation and solar activity. The geiger counters for electro magnetic fields, solar radiation and lux each day become more important due to the increased negative effects of the environment. geiger counters are used for both personal and professional for measuring such things as transformers, power lines and electrical devices. It is also used extensively in the industrial sector or in research and development. These geiger counters can be DIN ISO 9000 calibrated and certified and have other optional accessories available. A Geiger counter is an instrument that measures the radioactivity of an object or place. It is a particle detector that measure ionizing radiation.
It is usually made up of a tube that has a fine metallic wire through the middle. The space between them is isolated and filled with gas, and with a wire of about 1000 volts in relation to the tube. 
An ion or electron penetrates the tube (or an electron is released from the wall by x-ray or gamma), liberates electrons from the gas atoms which, due to the positive voltage of the central wire, are attracted towards the wire. In doing so, they gain energy, collide with the atoms and liberate more electrons, until the process becomes an avalanche that produces a detectable pulse current. Filled with a suitable gas, the flow of electricity stops by itself or even the electric circuit may help stop it. 
The instrument is called a “counter” because each particle that passes through it produces an identical pulse, making it possible to count the particles (usually electronically) but without telling us anything regarding its identity or energy (except that they must have enough energy to penetrate the walls of the counter). The Van Allen counters were made of a thin metal with isolated connections at the ends.
If you don't find the geiger counters you are looking for, please contact us and we will help you find the best solution to suit your needs by calling our offices on: UK customers +44(0) 23 809 870 30 / US customers (561) 320-9162 and our technical staff will advise you regarding our measuring instruments. Our engineers and technicians will be happy to help you with the geiger counters, and of course, with the other products in the field of regulation and control, and scales and balances.

Here you can see geiger counters from these companies:
Geiger Counters Gamma-Easy for the company Gamma ScoutGeiger Counters MKS-05 series for the company Ecotest.Geiger Counters by ATWA-STED GbRGeiger Counters PM1203-M for the company Polimaster.Geiger Counters Alpha-Beta-Gamma SM-3-D for the company Step.Geiger Couners by FlukeGeiger Counters Gamma Graetz ED150 for the company Graetz.

Technical specifications for Geiger Counters can be found at the following links:

- Geiger Counters Gamma-Easy 
  (Easy-to-handle geiger counters for the inspection, suitable for beginners)

Geiger Counters Gamma-Easy for the inspection, suitable for beginners.Geiger Counters Gamma-Easy for the company Gamma Scout

- Geiger Counters GAMMA - SCOUT Geiger Counters with memory and software.
  (Geiger counters with memory and software)

Professional Geiger Counters to measure accurately alpha, beta and gamma radiation.Geiger Counters GAMMA - SCOUT for the company Gamma Scout

- Geiger Counters MKS-05
  (Geiger counters warn about a great amount of radiation in a body)

Geiger Counters warn about a great amount of radiation in a body.Geiger Counters MKS-05 series for the company Ecotest.

- Geiger Counters Radex RD1503 and RD1503+ 
  (Geiger Counter Radex RD1503 to detect gamma and RD 1503+ gamma - x-ray and beta radiation)

Geiger Counter Radex RD1503 to detect gamma and RD 1503+ gamma - x-ray and beta radiationGeiger Counters by ATWA-STED GbR

- Geiger Counters Radex RD1706 
  (Geiger Counter Radex RD1706 to detect gamma - x-ray and beta radiation, small construction)

Geiger Counter Radex RD1706 to detect gamma - x-ray and beta radiation, small constructionGeiger Counters by ATWA-STED GbR

- Geiger Counters Radkeeper RPK
  (Detects gamma and x-ray radiation, for protection of occupational safety)

Detects gamma and x-ray radiation, for protection of occupational safetyGeiger Counters by Radkeeper

 - Geiger Counters PM1208-M
  (Geiger Counters for measuring radioactivity, audible alarm function, use as an watch)

Geiger Counters for measuring radioactivity, audible alarm function, use as an watchGeiger Counters PM1203-M for the company Polimaster.

- Geiger Counters Alpha-Beta-Gamma SM-3-D
  (Geiger counters for the protection of mechanics and technicians)

Geiger Counters for the protection of mechanics and technicians.Geiger Counters Alpha-Beta-Gamma SM-3-D for the company Step.

- Geiger Counters Fluke 481
  (hand-held, 
to measure beta above 100 keV and gamma and x-ray radiation above 7 keV)

hand-held, battery operated,to measure beta above 100 keV and gamma and x-ray radiation above 7 keVGeiger Couners by Fluke

- Geiger Counters Alpha-Beta-Gamma SM-5-D
  (Mobile geiger counters for measuring activities of alpha and beta fields)

Geiger Counters Alpha-Beta-Gamma SM-5-D for measuring activities of alpha and beta fields.Geiger Counters Alpha-Beta-Gamma SM-5-D for the company Step.

- Geiger Counters Gamma Graetz ED150
  (Counters for the detection of X rays and Gamma rays, with warning function)

Geiger Counters Gamma Graetz ED150 for the detection of X rays and Gamma rays, with warning function.Geiger Counters Gamma Graetz ED150 for the company Graetz.

What is radioactivity?

In the late nineteenth century, Antoine Henry Becquerel discovered that the joints of uranium produced invisible emissions spontaneously without any external influence.

Also, this radiation can be determined in the case of the radio and other elements. Radiations can:

- Penetrate material.
- Blacken photographic plates.
- Cause fluorescence..
- Ionize gas, or make them electrically conductive.

Therefore this is known as ionizing radiation.  Especially important are alpha, beta and gamma radiation.

  Sources of ionizing radiation:

- The atomic nuclei of these elements – called radionuclides – are not stable. They decay and transform into a stable state, or rather,
  they transform without external effects in the nuclei of other radioactive nuclides.

- An energy emission in the form of particles or electromagnetic waves is produced  -  ionizing radiation.

- At the end of a decay series there is always a stable element. 

There are 236 known stable elements and about 2600 radionuclides.  The radionuclides come from naturally occurring radioactive materials or they can also be produced artificially.

This property is called radioactivity.

 

Geiger Counters: Radioactive decay with emission of alpha rays


Radioactive decay with emission of alpha rays

The unstable nucleus of the radioactive isotope Ra226 (consisting of 88 protons and 138 electrons) has a continual tendency to change to a stable state.

For this reason, the radio nucleus emits a so-called alpha particle, which is similar to a helium nucleus made up of 2 protons and 2 neutrons.

This is known as alpha radiation

The radio nucleus transforms into a nucleus of the element radon, due to the two missing protons.

The nucleus of radon has 86 protons and 136 neutrons

Radon is also radioactive and continues the decay series. Radon continues decaying to become polonium, etc. At the end of the decay series, it eventually becomes lead which is stable and not radioactive.

Geiger Counters: Beta radiation.

Beta radiation

This is made up of negatively charged electrons that form when a neutron nucleus transforms into a proton nucleus. This occurs when, for example, radioactive iodine 131 decays .

Alpha rays and beta rays are particle rays.

Geiger Counters: Alpha and Beta radiation.

The nucleus of an iodine atom transforms into a nucleus of the element xenon.  
Alpha and Beta radiation are always related to the transformation of elements.

Geiger Counters: Gamma radiation.

Gamma radiation

Unlike particle radiation, with gamma radiation electromagnetic waves are emitted when the atomic nucleus decays.  

 

Geiger Counters: Lonizing radiation has a different penetration power.

Lonizing radiation has a different penetration power.

- Alpha radiation:
Can be protected against using a sheet of paper only 0,1mm thick

- Beta radiation:
Can be protected against with a book with a thickness 2-5cm

- Gamma radiation:
Continued protection with 1m of concrete or 20 cm of lead.

 

Ionizing radiation can have damaging effects if it comes into contact with living tissue.

The attenuation of the radioactivity, that is, the decay of radionuclides happens in very different periods of time.
 

Examples of the variation of magnetic field with distance

Density of magnetic flow (B, in microteslas, µT), measurement taken at one meter from the floor, of a railway line's electrical transport system (the tower is not shown to scale). You can observe that the value "B" is reduced significantly when the distance to the line is increased. As such, in the vertical of the line, "B" can be reach values of up to 6 µT; at 15 meters from the line "B" will be reduced by half and for distances greater than 30 meters, "B" would be in the order of tenths of a microtesla.


Geiger Counters: graphic of the density of magnetic flow

You will find a detailed explanation about radio activity if you follow this link or if you click on the image to the left. There are a wide range of uses for geiger counters, such as in nuclear plants, hospitals (for radiology), in construction safety, in the food industry (for food conversation using radiation) or in testing wood (when importing). As you can see, geiger counters can be used for many application in a variety of fields.

If you wish to view or print a selection of geiger counters from our catalogue, click the PDF symbol.
Geiger Counters: go to catalogue

Topseller in Measuring Instruments

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If you have any questions, call our offices on:
UK customers +44(0) 23 809 870 30
US customers (561) 320-9162

This page in German Geiger counters in German.  in Italian Geiger counters in Italian. in Spanish Geiger counters in Spanish. in Croatian Geiger counters in Croatian. in French Geiger counters in French. in Dutch Geiger counters in Dutch. in Hungarian Geiger counters in Hungarian.
in Polish Geiger counters in Polish. in Bulgaria Geiger counters in Bulgaria. in Russian Geiger counters in Russian. in Turkish Geiger counters in Turkish. in Czech Republic Geiger counters in Czech Republic. and in Portuguese Geiger counters in Portuguese..

Below you will find an overview of the different product groups of measuring instruments

Absolute Humidity Meters
Accelerometers
Alert Meters
Air velocity meters
Analyzers (Colour)
Analyzers (Combustion)

Analyzers (Gas)
Analyzers (Lan)
Analyzers (Noise)
Analyzers (Oxygen)
Analyzers (Ozono)

Anemometers
Barometers
Balances
Borescopes
Cable detectors (electrical)
Calibrators
Calipers
Cameras (Infrared Thermal Imaging)
Capacitance Meters
Coating Thickness Meters
Chlorine Meters
Clamp Meters
Climate Meters
Colour Meters

Conductivity Meters
Contact Thermometers
Current detectors

Data Loggers
Differential Pressure Meters
Digital Multimeters
Densimeters
Detectors (Humidity, Radiation, Voltage)
Dose Meters (Noise)
Durometers

Dust particle analyzers

Electric Tester
Endoscopes
Fiberscopes
Flow Meters Air
Flow Meters Gas
Force Gauges (digital)
Function generators
Frequency Meters
Gas Detector
Gaussmeters
Handheld Tachometers
Hardness Meters
Humidity Testers (Building material)
Hygrometers
Indicator Sound Level
Indicator (Humidity)
Instruments (Environmental)

Impedance bridges
Infrared Thermometers
Insulation Meters
Lan Network Testers
Laser Distance Meters
Laser level
Laser meters
Laser thermometers
LCR Meters
Length Meters
Light Meters
Lux Meters
Magnetometers
Manometers
Material Thickness Meters
Measurement Devices (Force)
Measuring Meters (Distance)
Measuring Wheels
Meters (Combustion, Distance, Earth,
Energy, Environmental, Gas, Gloss, Ground pH, PowerPressure, Radiation, Salt, Temperature)
Megohmmeters
Micrometers
Microscope
s
Modular signal Converters
Moisture Indicator

Multimeters
Multi-Parameter Photometers
Noise Meters
Odometers
Ohm Meters
Oscilloscopes
Oxygen Meters
Ozone Meters
Paper Moisture Meters
Penetrometers

Phase rotation meters
Photovoltanic meters
Pitot tube air flow meters
Pocket pH-meters
Power Analyzers
Pressure Gauges
Pyrometers
Quality Meters (Air)
Radiation Counters
Radioactivity meters
Reader (Temperature)
Recorders Data
Redox Meters
Refractometers
Relative Humidity Meters
Resistance Testers
Rotation meters
Roughness tester
Rotation meters
Roughness tester
Scales
Sensor (Temperature)
Signal converters
Signal Level Analyzers
Single-parameter Photometers
Sound Level Meters
Systems for Environmental
Stethoscopes (electronic)
Stroboscopes
Surface Thickness Meters

Tachometers
Telescope Meters
Thermo-anemometers
Thermo-Hygrometers
Temperature Probes
Testers Air
Testers Conductivity
Testers Earth
Testers Insulation
Testers Noise
Testers pH
Testers paper
Testers Sound
Testers Temperature
Thermal stress
Thermal Imaging Cameras
Thermometers
Thermocouples
Thickness Meters
Torque meters

Ultrasonic Flow Meters

VDE tester
Vibration Meters
Video endoscopes
Voltage meters
Weather Stations
Wood (humidity)

Below you will find an overview of the different product groups of scales and balances

 Accurate scales
 Analytical scales
 Animal scales

 Baby scales
 Basic scales

 Bench scales

 Cask scales
 Crane scales
 Compact scales
 Counting scales

 Density scales
 Dosing scales

 Electronic scales

 Floor scales
 Force meter

 Hanging scales

 Hook scales
 Hopper scales
 Household scales
 Humidity scales

 Industrial scales
 Inventory scales

 Jewellery scales

 Kitchen scales

 Laboratory scales
 Lifting scales
 Load cranes
 Load scales

 Mechanical scales
 Micro scales
 Moisture scales
 Multifunction scales

 Package scales
 Pallet truck scales
 Pallet scales
 Paper scales
 Pharmacy scales
 Piece counting scales
 Platform scales
 Pocket scales
 Postal scales

 Precision scales
 Probe cutter

 Retail scales

 Scales for analysis
 Scales for carat
 Scales for colleges
 Scales for dentistry
 Scales for gold
 
Scales for people
 Scales for school
 Scales for transit

 Scales for weighing pallets
 Scales with a support
 Scales with counter
 Scales with software
 Shipping scales
 Spring scales
 Surface scales

 Systems (Hanging)

 Tabletop scales
 Thermo scales
 Trade scales

 Vehicle scales
 Verifiable scales
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 Water resistant scales
 Weighing hooks
 Weighing platforms
 
Weighing scales
 Weight indicator