Thermo Scientific™ Mini 900 Scintillation Monitors

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

Brand:  Thermo Scientific™ MFG017

Product Code. 17352200

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&bulletc1_end;

  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

• Background Measurement: 20 - 30 s-1
• 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)
• 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
• Weight (Metric): 1 kg
• Voltage: Main Power: 12 - 18 VDC; GM Tube: 300 - 700 V
• Battery Life: ∼300 hr. at 4 hr.s/day

• Sensitivity: 130 s-1 due to 3.7 kBq 99Tc at 20 mm
• Description: Type 900/44B
• Product Type: Scintillation Monitor
• Detector Type: Photomultiplier Tube
• For Use With (Application): The 900 Series of radiation counters are well established in teaching, research, hospital and industrial laboratories
• Radiation Type: Gamma or X-Ray depending on config.
• Weight (English): 2.2 lb.