The LB 2045 is a modern gamma spectroscopy system for activity measurements in laboratories. It is easy to operate and provides quick and reliable measurement results which are presented clearly arranged on a large graphical display with a touch panel. The instrument is ideally suited for nuclide-specific activity measurements in the radionuclide laboratory.
Application
The gamma spectrometer has been designed for use in nuclear medicine, e.g. for in-vitro tests,radio-immunoassays or for the analysis of environmental samples, e.g. wastewater, or for the detection of extremely low activities in food samples. Various scintillation probes are available, e.g. for Marinelli beakers, or as 2″ well-type crystals.
System Description
The measurement electronics LB 2045 is a modular designed 1/219″ system accommodated in a desktop housing comprising a computer unit, graphical display with touch panel and power supply unit. For data acquisition, the measurement electronics include two additional plug-in cards, a high voltage unit with a preamplifier and an ADC for the acquisition of spectra. The power supply unit is designed for all typical voltages from 90 – 260 VAC and 50 – 60 Hz; switch-over is not required.
Features
- Connection for scintillator probes(NaI, CsI, BGO)
- 3 different energy ranges
- Spectrum presentation(1024 channels)
- Graphical display (320 x 240)with touch panel
- One or two energy windows
- Nuclide library
- Storage of spectra or ROI data
- Half-life correction
- Weight entry and spillover correction
- Real-time clock
- RS232 interface for printer/PC
For more details, please refer to the datasheet.
The LB 124 B beta-gamma contamination monitor is used for the measurement of radioactive contamination on surfaces is based on the well-proven Xenon filled proportional counter technology. This detection technique provides extremely high sensitivity for beta particles and also for gamma radiation. The instrument is therefore ideally suited for the measurement of photon emitting radionuclides as widely used in nuclear medicine as well as in other laboratories and environments.
Applications
The contamination monitor LB 124 B is a versatile and flexible instrument for practical radiation protection. It can be employed wherever contamination caused by radioactive substances is encountered and has to be monitored: in nuclear medicine, research, nuclear power plants, in decommissioning of nuclear facilities, disposal of nuclear waste and also in environmental monitoring. The instrument is used to measure radioactive beta-gamma contaminations on surfaces such as floors, walls, desks, objects, clothing or skin.
Description
The contamination monitor LB 124 B is a portable battery-operated instrument with a sensitive area of 150cm2. It comprises a sealed Xenon filled proportional counter tube, a microprocessor board with a display unit, as well as an amplifier and discriminator module with a high voltage supply for signal processing. There are guides to mount an additional grating for better detector protection or to use a sample holder with a drawer for activity measurement of small samples.
Features
- Calibration factors for more than 50 nuclides
- Calibration selectable according to ISO 7503-1 or related to activity on 100 cm2 area
- Protection grid with high transmission
- Adjustable alarm thresholds
- Acoustic alarm
- RS232 Interface
For more details, please refer to the datasheet.
The LB 124 SCINT series of Contamination Monitors are versatile and flexible instruments for practical radiation protection applications. They can be employed wherever contamination caused by radiation substances is encountered and has to be monitored:
- In nuclear medicine
- Research
- Nuclear power plants
- In decommissioning of nuclear facilities and disposal of nuclear waste
- In environmental monitoring
The instruments are used to measure radioactive alpha and beta-gamma contaminations on surfaces such as floors, walls, desks, objects, clothing or skin. The contamination monitors are contamination monitors based on scintillation technology. The benefits are:
- Simultaneous and separate measurement of alpha and beta-gamma contaminations
- Measurement of gamma dose rate (only for LB 124 SCINT-D)
- High sensitivity and uniform response
- No counting gas required
- Lightweight, easy to handle and rugged instrument
- Wide temperature range
The Contamination Monitors are portable battery-powered instruments. It is comprised of a display unit with microprocessor electronics, signal processing electronics and a ZnS scintillator with a photomultiplier.
Versions:
LB 124 SCINT
- Sensitive area of 170 cm²
- Simultaneous and separate α- and β-γ-measurement
- Calibration factors for more than 50 nuclides
- Protective grid with high transmission
- Adjustable alarm thresholds
- Acoustic alarm
- High sensitivity and uniform response
- Lightweight, easy to handle and rugged instrument
- Wide temperature range
LB 124 SCINT-D
- Sensitive area of 170 cm²
- Simultaneous and separate α- and β-γ-measurement
- γ dose rate detection (2 channels)
- Mobile determination of contamination and equivalent dose rate H*(10)
LB 124 SCINT-300
- Large detector area of 345 cm²
- Time efficient measurement of large surfaces
- High efficiency over the entire sensitive area
For more details, please refer to the datasheet.
The LB 1342 scintillator probe for α, β, γ and X-ray radiation is designed with a 170 cm² surface area. The contamination probe has a window foil that is sensitive to mechanical damage, and it is therefore protected by a protective grid. However, everything should be done to avoid the destruction of the window foil such as sharp objects, measurement on rough surfaces, rose bushes, and cat’s paw retractors.
Nevertheless, a damaged LB 1342 detector window foil can easily be replaced by the user. Berthold supplies a foil stretched over a frame as a spare part.
The measuring results are presented on the easy to operate battery Universal Monitor (UMo II) LB 134 with display, data storage and printer output.
Features
- High measuring accuracy
- A precise distinction of radiation types
- High sensitivity even at low energies
- Low costs for the scintillator
- Ease of maintenance
- Unique simultaneous and separate measurement of α and β-y radiation
- The individual types of radiation can be distinguished by means of special evaluation and correlation circuits, and thus separated and measured at the same time.
- No counting gas required
- 118 mm x 145 mm (170 cm²) at the transmission of 80%
- It is protected by a protective grid
- Background: alpha channel approx. 0.1cps, beta channel approx. 15cps
For more details, please refer to the datasheet.
The LB 1343 scintillator probe for α, β, γ and X-ray radiation is designed with a 345 cm² surface area. The contamination probe has a window foil that is sensitive to mechanical damage, and it is therefore protected by a protective grid. However, everything should be done to avoid the destruction of the window foil such as sharp objects, measurement on rough surfaces, rose bushes, and cat’s paw retractors.
Nevertheless, a damaged LB 1343 detector window foil can easily be replaced by the user. Berthold supplies a foil stretched over a frame as a spare part.
The measuring results are presented on the easy to operate battery Universal Monitor (UMo II) LB 134 with display, data storage and printer output.
Features
- High measuring accuracy
- A precise distinction of radiation types
- High sensitivity even at low energies
- Low costs for the scintillator
- Ease of maintenance
- Unique simultaneous and separate measurement of α and β-y radiation
- The individual types of radiation can be distinguished by means of special evaluation and correlation circuits, and thus separated and measured at the same time.
- No counting gas required
- It is protected by a protective grid
- Background: alpha channel approx. 0.1cps, beta channel approx. 15cps
For more details, please refer to the datasheet.
The Berthold LB 6701 ionisation chamber is a photon radiation dose rate probe used in health physics applications. Its measured quantity is ambient dose equivalent H*(10) or ambient dose rate equivalent Ḣ*(10).
The Berthold LB 6701 ionisation chamber is made from aluminium with a nitrogen gas filling at 10 bar and a radiation resistance up to 106Gy. The chamber current is proportional to the dose rate, this current is converted into a +11V Norm pulse frequency in the Current/Frequency converter LB3856-23 or LB3856-24.
The Current/ Frequency converter is mounted in a separate housing LB6703 which also contains the high voltage module to operate the ionisation chamber. A 90Sr check source with 2.5 kBq, 25 kBq or 50 kBq activity is built in the ionisation chamber to continuously monitor the proper functioning of the system.
The ionisation chamber exists in 3 versions:
- LB 6701L – Low dose rate 10 µSv/h to 10 Sv/h
- LB 6701M – Middle dose rate 0.1 mSv/h to 100 Sv/h
- LB 6701H – High dose rate 1 mSv/h to 1000 Sv/h
Main applications:
- Nuclear Medicine
- Civil Defence and Disaster Control
- Research Facilities
- Industry and Services
- Public Facilities
- Nuclear Facilities
For more details, please refer to the datasheet.
The LB 6419 neutron and gamma detector is designed to derive dose and dose rates at particle accelerators. In this environment, very specific conditions for dose monitoring prevail like pulsed radiation or high beam energies. Many conventional measuring devices for ionized radiation suffer greatly from dead-time effects and are therefore only limited suitable for the measurement of pulsed radiation fields. In addition, many types of detectors do not have the necessary sensitivity at high energies or high dose rates and tend to underestimate the radiation field intensities significantly.
The design of the dose rate monitor LB 6419 is unique in many respects:
- Dual Detector Design with 3He and scintillation detector
- Measurement of neutron and gamma dose (rate)
- Measurement of prompt and delayed neutrons
- Measurement of low and high energy neutrons
- Unsurpassed level of measurement and data security through dual detection design and data storage
The Dual Detector Design is patented and provides outstanding features. Whereas prompt neutrons can be detected in the 3He tube, those from pulsed sources produce short-lived reaction residuals in the plastic scintillator or the surrounding which are observed with very high efficiency. The dose is derived from the intensity of those residuals between the pulses. Under typical pulsed beam conditions, the probe does not suffer from saturation effects up to neutron dose rates of approx. 1 Sv/h in the burst. Furthermore, the gamma dose rate in the pulse can be detected with the plastic scintillator as well.
Additionally, the Dual Detector Design provides security far better than any other REM counter. Both detectors are applied independently and are able to control themselves mutually. Two independent interlock signals round out the security concept.
For more details, please refer to datasheet.
Features:
- Arrangement of a dual detector with 3He and scintillation detector
- Measurement of unpulsed and pulsed radiation
- Neutron and gamma measurement simultaneously and separate
The LB 126 is a portable dose rate monitor which is used for fast and reliable measurements in photon radiation fields. A sealed off proportional counter tube, approved in accordance with the measured quantity of ambient dose equivalent H*(10), is used as a detector. The unit is simple to operate with only three keys to navigate through the clearly arranged and user-friendly menu prompting.
Up to 1000 measurements can be stored in the LB 126 data memory which can be accessed and printed out via an RS232 and/or an RS485 interface allowing communication with the PCs, i.e. reading and reset of the data memory, acquisition of the measurement values, reading the parameters and reset of the dose, takes place via F2C Protocol.
For more details, please refer to datasheet.
Features:
- RS232 and RS485 data interface for printout and communication
- Detector: energy compensated proportional counter tube LB 6006-H10
- Measuring range: 50 nSv/h to 50 mSv/h
- Energy range, polar response: 30 keV to 1,3 MeV, ±45°
- Selectable Units: µSv/h, µSv or mrem/h mrem
- Freely adjustable alarm thresholds for dose and dose rate
- Microprocessor electronics with charging circuit for 4 rechargeable batteries (AA cells)
- Data storage for 1000 measurements
- Real-time clock, battery-buffered
- Acoustic signal and alarm display
- RS485 networking for up to 32 devices
- Temperature range: -10 bis +40 °C
The LB 6414 is a new portable neutron survey meter with extremely high sensitivity. The energy-dependent response of the instrument was maximized for fission neutrons. There are several interesting applications amongst which is the search for plutonium.
Neutron Detection – Some applications in neutron detection require extremely sensitive instruments rather than flat energy response. In these cases, the LB 6414 neutron survey meter is superior to the conventional rem-counters, which have relatively low efficiencies.
Plutonium Detection – Plutonium is extremely dangerous and hard to detect over larger distances. The α-particles, γ’s and X-rays which are emitted by plutonium isotopes could easily be shielded by the material itself or by surroundings. Besides a few γ-rays, the only penetrating radiation emitted by plutonium samples are neutrons from the spontaneous fission of the even-numbered plutonium isotopes, especially from 240Pu. Thus a neutron detector that has maximum sensitivity for fission neutrons would provide an excellent tool for the detection of plutonium, even through shieldings.
Plutonium Contaminations – At close distances the neutron survey meter LB 6414 is capable of monitoring even smaller amounts of plutonium. This enables this instrument for the search and localization of plutonium contaminations for instance in glove boxes, pipes or elsewhere in plutonium processing facilities. Regions with relatively high plutonium concentrations can easily be identified. This is even true in the presence of shielding surrounding materials because neutrons are strongly penetrating.
Neutron Dose Rate Monitoring – As the LB 6414 is extremely sensitive it would sometimes also be useful in neutron dose rate monitoring. Especially in applications, where there is more need for high sensitivity than for flat energy response. For instance, in measuring low neutron radiation levels with a constant neutron energy spectrum it would be favourable to determine a user-specific calibration factor once and then benefit from good counting statistics.
The Universal Monitor (UMo II) LB 134 acquires the data from the neutron probe LB 6414 and provides easy-to-use data analysis, display of measured values, alarm indications, data storage, parameter setting and communication and service functions. The software uses sophisticated algorithms for the detection of changes in the observed counting rates. Therefore the instrument has excellent characteristics for the search for radiation sources.
For more details, please refer to datasheet.
Features:
- Search for illicit trafficking plutonium
- Search for plutonium contaminations
- Measurement of 240Pu equivalent mass
- Nuclear waste inspection
- Measurement of 252Cf and other neutron sources
- Monitoring of neutron radiation field intensities
The Berthold LB 6411 Neutron Dose Rate Probe was designed for the measurement of the ambient equivalent dose of neutrons. It consists of a polyethylene (PE) moderator sphere with a composite 3He recoil proton counter tube at its centre. The system can be operated with the easy to use universal monitor (UMo II) LB 134 or as a stationary system with our data logger LB 115.
The LB 6411 probe is characterized by an extremely high sensitivity of approx. 3 pulses per nSv, more than 5-times better vs. detectors with conventional design. This was achieved by the relatively large detector volume and a special gas filling of the proton counter tube. Thus, additional recoil protons are produced in the counting gas, resulting in enhanced sensitivity.
For more details, please refer to datasheet.
Features:
- Best-in-class sensitivity: 3 counts per nSv in the energy range of 1 to 10 MeV
- Fast results: Short measuring times in weak neutron fields
- Oustanding flexibility: can be used both, as a portable and as a stationary measuring device
- High data integrity: calibrated to the ambient equivalent dose H*(10) for neutrons recommended by the ICRP 60 and ICRU 39
- Wide range of applications: special version available for high energy applications at several hundred MeV or more, e.g. to be used for neutron dose rate monitoring at high-energy accelerators
