BX-2 Series X-ray Tubes-  BX-2 CH/R 1.35 mm 35 degree X-ray Tube
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BX-2 CHR 1.35 mm 35 degree x-ray tube
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Application: The BX-2 CH/R X-ray tube has a beryllium window for minimal attenuation of low-energy radiation in both gauging and industrial applications.  This tube also features a cathode hood for enhanced stability of radiation output.  The BX-2 CH/R is suitable for applications in air to 25 kV, and in transformer oil to 40 kV.  A mounting flange with tapped holes and an O-ring groove is supplied for applications where a leak-tight seal is required.

Structure:
Anode:  
Tungsten target cast in solid copper anode.   
Cathode:    
Line focus, tungsten filament.    
Envelope:                     
Hard glass, gettered.
Mass:
475 grams, approx.
Dimensions:    
Focal Spot Size:        
1.35 mm, per NEMA Std.  XR 5-1984
Target Angle:            
35 degrees effective.  
Window:                               
0.010" (0.25mm) thick high-purity beryllium.

Electrical Ratings:
Voltage:                       
In Air:
            Maximum 25 kVp self-rectified.
            Maximum 25 kV constant potential.
In Oil:
            Maximum 40 kVp self-rectified.
            Maximum 40 kV constant potential.
Current:                       
Filament:                          


Thermal Ratings:
2.20 Amperes Maximum.
Energy Storage:               
10.6  kJ (15 kHU)     
Energy dissipation:     
In Air:
             Maximum 5.0 J/sec (7HU/sec) continuous
             without additional heat sink or forced air
             cooling.
             See Heating and cooling Chart.
In Oil:            
              Maximum 110 kJ/sec (155 HU/sec) continuous.
              See Heating and Cooling Chart.

 Cooling rate:                       
Maximum 7.5 kJ/min (10.6 kHU/min) averaged over a
one minute interval.

Cooling and Insulation:

     This tube is intended to be used in an environment in which a high-grade transformer oil is used as the primary means of cooling and insulation.  
The oil should have a minimum dielectric strength of 45 kVp per ASTM D 877-49.  All ratings herein assume operation in well circulated oil.
     Alternatively, this tube may be operated in air at the noted reduced electrical and thermal ratings.  In air, the use of additional heat sinking or forced-air cooling is very strongly recommended to ensure reasonable tube life.