What does the Ludlum device measure?
What does the Ludlum device measure?
Based in Hamburg, Germany, Ludlum GmbH provides radiometric instruments such as body contamination monitors and release monitors to facilitate the release of people, equipment, and waste from radioactive areas to clean areas.
Which type of radiation does the Ludlum Model 3 scintillation detector detect?
Gamma
Specifications
| Application | Alpha, Beta, and Gamma surveying |
|---|---|
| Compatible Detectors | GM, Scintillation |
| Detection Range | Dependent on detector |
| Linearity | Reading within 10% of true value with detector connected |
| Meter Dial | 0 – 2 mR/hr, or 0 – 500 kcpm, BAT TEST (Meter Faces tab lists other available meter faces) |
What is Ludlum?
Ludlum Measurements is an American manufacturer of radiation detection and monitoring equipment such as geiger counters, scintillation counters, scalers, and other radiation detection equipment. The company is widely accepted as the worlds best selling radiation detection brand.
What is a pancake detector?
The GM pancake-type detector in the Model 44-9 is one of the most popular radiation detectors used throughout the world. This alpha, beta, and gamma radiation detector has a rugged metal housing and is conveniently shaped and sized for checking contamination on people and objects.
How does a survey meter work?
Survey instruments locate contamination or detect radioactive material. Radioactive material detected in the attached probe causes electronic pulses that move the meter needle and make an audio response. The meters read out in counts per minute (cpm) and can be calibrated to report mR/hr.
How does a Pancake probe work?
This model is also known as a “Pancake” probe. Detects radiation via the ionization of a gas contained inside the probe. The ejected electrons are then collected and counted. Probe has a very thin membrane that is under pressure and easily punctured.
How does a GM detector work?
How does it work? A Geiger counter has two main parts—a sealed tube, or chamber, filled with gas, and an information display. Radiation enters the tube and when it collides with the gas, it pushes an electron away from the gas atom and creates an ion pair.
How do you use a survey meter?
Using a survey meter
- Check for a calibration sticker.
- Ensure that the probe is capable of detecting the radioisotope you are using.
- Check for tightness of cable connections.
- Perform a battery check.
- Turn the on/off switch to the lowest multiplication scale.
- Allow the unit to warm up (15-20 seconds).
How often must survey meters be calibrated?
As a rule of thumb, a source should be recertified every two to three half-lives or 8 to ten years, whichever comes first. This is particularly important for unsealed plated sources. Calibrations demonstrate that the measurement accuracy is acceptable at the calibration energy (usually 662 keV).
Why GM counter Cannot detect energy?
GM counter can not measure energy due to a lack of differentiating abilities. Uncharged particles like neutrons cannot be detected. GM counters are less efficient due to its large paralysis time limits and also large dead-time.
