Beam Bending Viscosity


The Model BBV series instrument is a versatile beam bending viscometer system that can determine;
annealing & strain point temperatures of a solid glass beam according to the ASTM C-598 procedure or,
the temperatures for a range of viscosities of a solid glass beam according to the ASTM C-1350m procedure.

The annealing and strain points of a glass are widely used production control parameters. Changes in the annealing and strain point temperatures are indications of chemistry changes. If forming a fiber is not desired, is impractical, or impossible, annealing and strain point temperatures can still be determined using cut or machined rods or bars in a beam bending viscometer according to ASTM C-598.

The annealing point temperature is the temperature at which a 2-point supported horizontal bar or rod with a uniform cross section deflects under an applied mid-point load at a prescribed calculated rate while cooling in a special furnace at the rate of 4C per minute. The strain point temperature is determined by extrapolation of the annealing point data and is the temperature at which the mid point deflection rate is 0.0316 times the deflection rate observed at the annealing point.

These tests are performed with an LVDT extensometer system that is manufactured by Orton. The Model BBV Series has been designed to automatically monitor the deflection of the sample beam and calculate the annealing and strain points according to the ASTM C-598 method, or calculate the temperature for a range of viscosities according to the ASTM C-1350M method.


Model BBV-1000





General

A laboratory bench-top system for automatically determining annealing point temperature, strain point temperature or viscosity (Log poise 14.0 - 9.0) of a solid glass beam, rod, or tube below 1000C.

Operated according to ASTM C598, ASTM C1350M or modified versions of those test procedures

Includes
  • Bench top instrument console
  • 1000C furnace
  • programmable process controller
  • measuring head with fused quartz sample pedestal (50mm diameter) and fused quartz load rod
  • type "S thermocouple
  • load weights
  • computer software
  • accessories and instruction manual. (Computer not included.)
Specification 

Model  : BBV-1000
Warranty  : 12 Months
Range :   Log 14.0 Log 9.0 Poises
Atmosphere  : Air
Temperature Range  :  RT to 1,000C
Furnace  :  Tube style
LVDT Displacement Range  :  0.500 inch (12.7 mm)
LVDT Sensitivity  :  0.7 mV/V/.001 inch(28 mV/V/mm)
Mass Set  :  Slotted weight set 1-500 Grams
Thermocouple  : Type S
Sample Size  : 2.53 to 3.78mm dia. Rod (or) 2.21 to 3.31mm bar
Power Requirements  : 120vac/10amp or 240vac/5amp, 50 or 60 Hz
Computer Requirements  :  Desktop with available PCI slot
Power Control  :  SSR
Pedestal  :  Fused Quartz 50mm diameter
Load rod  :  Fused Quartz Shepherds hook
Furnace Movement  :  Manual lift
Temperature Control  :  Honeywell UDC 3200 Process controller
Computer Interface Software  :  Included
25mm Diameter Pedestal :   Optional
Bench-top Footprint (stand)Length x Depth x Height  :  12 x 14 x 33(31 x 36 x 84 cm)
Bench-top Footprint (controller)Length x Depth x Height  :  18 x 12 x 5(46 x 31 x 13 cm)



Model BBV-1200




General

A laboratory bench-top system for automatically determining annealing point temperature, strain point temperature or viscosity (Log poise 14.0 9.0) of a solid glass beam, rod, or tube below 1200C.

Operated according to ASTM C598, ASTM C1350M or modified versions of those test procedures.

Includes

  • Bench top instrument console
  • 1200C furnace
  • programmable process controller
  • measuring head with alumina sample pedestal (50mm diameter) and alumina load rod
  • type S thermocouple
  • load weights
  • computer software
  • accessories and instruction manual. (Computer not included.)

Specification :

Model  :  BBV-1200
Warranty  :  12 Months
Range :   Log 14.0 Log 9.0 Poises
Atmosphere  :  Air
Temperature Range  :  RT to 1,200C
Furnace  : Tube style
LVDT Displacement Range  :  0.500 inch (12.7 mm)
LVDT Sensitivity  :   0.7 mV/V/.001 inch(28 mV/V/mm)
Mass Set  :   Slotted weight set 1-500 Grams
Thermocouple  :  Type S
Sample Size :   2.53 to 3.78mm dia. Rod (or) 2.21 to 3.31mm bar
Power Requirements  : 120vac/10amp or 240vac/5amp 50 or 60 Hz
Computer Requirements  :  Desktop with available PCI slot
Power Control  :  SSR
Pedestal  :  Alumina 50mm diameter
Load rod  : Alumina Shepherds hook
Furnace Movement  :  Manual lift
Temperature Control  :  Honeywell UDC 3200 Process controller
Computer Interface Software :   Included
Bench-top Footprint (stand)Length x Depth x Height  :  12 x 14 x 33(31 x 36 x 84 cm)
Bench-top Footprint (controller)Length x Depth x Height  :  18 x 12 x 5(46 x 31 x 13 cm)



 
 
 
 
PT. SPEKTRA SURYA UTAMA
 
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