- Description
- Specifications
Thermo Scientific™ Mini 900 Scintillation Monitor serves as a portable or benchtop style radiation counter.
A variety of different probes to accommodate most radiation detection needs.
Feature a large logarithmically scaled meter with an open scale at the lower end to show background levels of radiation while displaying high levels without switching
- Several configurations available
- Built-in speaker provides audible feedback of the radiation intensity
- An alarm can be set to tripat any level on the scale
- Battery or line powered
- Packaged in a durable, lightweight aluminum case
Type R:
- Monitoring High Level Dose Rates A monitor scaled over the range 0.5 to 5000µSv h-1 (0.05 to 500mR/h)
- G-M tube is compensated to give a useful response from 45 keV to 1.5MeV and above
- Not recommended for monitoring X-radiation from apparatus operating below 75kVp
Type G:
- Monitoring for Low Environmental Dose Rates Highly sensitive performance
- Scaled over the range 0.05 to 75µSv h-1 (0.005 to 7.5mR/h)
- Useful energy range: 55 keV to 1.5MeV and above
- Not suitable for monitoring X-radiation
Type D:
- Uses partially compensated G-M tube to obtain an extended low energy response
- Scaled over the range of 0.5 to 1000µSvh-1 (0.05 to 100 mR/h)
- Useful energy range: 30 keV to 1.5MeV but response is maintained down to at least 17 keV
- Suitable for measuring radiation from X-ray apparatus operating at or above 45kVp
Type X:
- Scaled 0.5 to 2000 counts per second Uses an end window G-M tube without energy compensation
- Sensitive to radiation down to 10keV Useful for locating X-ray leakage from a variety of systems including high voltage equipment
- Not intended for measurement but as a relative check device
Type 41:
- Sodium iodide crystal (19mm dia. × 25mm thick)
- Suitable for energies from 25 keV upwards
- A lead cylinder surrounds the crystal gives the probe directional properties as well as reducing background
- Diameter: 41mm
- Length: 220mm
Type 41S:
- Cylinder without lead shielding and with a larger sodium iodide crystal (25mm dia. × 38mm thick) for increased sensitivity
- Suitable for energies from 25 keV upwards The probe is essentially omni-directional for medium and high energy gamma radiation
- Diameter: 38mm
- Length: 217mm
Type 42A:
- Sodium iodide crystal 23mm dia. × 1mm thick with a 14mg cm2 aluminum window
- Probe has a higher sensitivity than the Type 41 for gamma energies below 60 keV to a minimum of 10-15 keV
- An integral lead collimator makes it particularly useful for 125I thyroid monitoring and deep vein thrombosis location
- Diameter: 40mm
- Length: 187mm
Type 42B:
- This probe is the beryllium window version of the type 42 and detects very low gamma energies down to 5keV
- The response above 15 keV is almost identical to the 42A
Type 44A:
- The sodium iodide crystal (32 × 2.5mm thick) is mounted on the front surface of the probe to facilitate monitoring of large contaminated areas Suitable for a range of energies from approximately 15 keV to 250 keV Beta sensitive for energies above 500 keV
- Diameter: 50mm
- Length: 180mm
- Aluminum window weight: 14mg/cm2
Type 44B:
- This probe is the beryllium window version of the above and extends the sensitivity down to approximately 5keV, making it useful for 55Fe
- 3.7kBq (0.1µCi) of 55Fe at 10mm yields approximately 180 counts s-1
- Window weight: 47mg/cm2
Includes:
Each unit comes with a comprehensive manual containing tables and curves of response to different radiations and other useful information
Recommended for:
The 900 Series of radiation counters are well established in teaching, research, hospital and industrial laboratories
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