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Thermo Scientific™ Mini 900 Scintillation Monitors

Thermo Scientific™ Mini 900 Scintillation Monitor serves as a portable or benchtop style radiation counter.

£8500.00

Specifications

Certifications/Compliance The monitor conforms to the requirements of the International Technical Commission publication 325
Battery Type 6 AA, Alkaline (IEC LR6) or Rechargeable (IEC KR 15/51)
Product Type Scintillation Monitor
Performance Paralysis Time: Scale corrected to give true reading; Meter Integration Time: 1 to 4 seconds set to match counting rate; Overload Protection: No meter 'fallback' with intensities at least 100 times full scale reading
Detector Type Photomultiplier Tube
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Product Code Brand Description Price Quantity & Availability  
Product Code Brand Description Price Quantity & Availability  
17352200
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Thermo Scientific™
MFG017
Type 900/44B This item is currently unavailable or has been discontinued.
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Description

Description

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

Specifications

Specifications

The monitor conforms to the requirements of the International Technical Commission publication 325
Scintillation Monitor
Photomultiplier Tube
The 900 Series of radiation counters are well established in teaching, research, hospital and industrial laboratories
∼300 hr. at 4 hr.s/day
6 AA, Alkaline (IEC LR6) or Rechargeable (IEC KR 15/51)
Paralysis Time: Scale corrected to give true reading; Meter Integration Time: 1 to 4 seconds set to match counting rate; Overload Protection: No meter 'fallback' with intensities at least 100 times full scale reading
1 kg
Main Power: 12 - 18 VDC; GM Tube: 300 - 700 V
2.2 lb.
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