Littleton Softening Point


The softening point of a glass is the most widely used production control parameter.

Changes in the softening point temperature are indications of chemistry changes. According to ASTM C-338 the softening point temperature is the temperature at which a uniform fiber of glass (0.65 mm in diameter x 23.5 cm long) elongates under its own weight at a rate of 1.0 millimeters per minute when the upper 10 cm of its length is heated in a special furnace at the rate of 5C per minute. This test is performed in a laser optic extensometer system that is manufactured by Orton. The Orton Model LSP Series has been designed to automatically monitor the elongation of the sample fiber and calculate the Littleton softening point according to the ASTM C-338 method.

(Note: If forming a fiber is not desired, is impractical, or impossible, the softening point temperature RANGE can still be determined by the Parallel Plate Viscometer method, ASTM C-1351M.)


Model LSP-900





General


A laboratory, bench-top, fiber elongation system for automatically determining Littleton softening point of a glass fiber below 900C

Operated according to ASTM C-338 Method or modified version of this procedure.

Includes
  • Bench top instrument console
  • 900C furnace
  • programmable process controller
  • laser micrometer and controller
  • type "S" thermocouple
  • computer software
  • accessories and instruction manual. (Computer not included.)
Specification :

Model  :  LSP-900
Warranty  :  12 Months
Accuracy  :  +/-2C
Atmosphere  :  Air
Temperature Range  :  RT to 900C
Furnace Core  :  Stainless Steel
Heated Length  : 3.25 inches (83 mm)
Laser Type  :  FDA Class II / IEC Class 1
Laser Micrometer Range  : 0 35 mm
Sample Load  :  none
Thermocouple  : Type "S"
Sample Size  :  235 mm long x 0.65 mm diameter
Power Control  : 4-20ma
Power Requirements  :  120vac/10amp or 240vac/5amp, 50 or 60 Hz
Temperature Control  :  Honeywell UDC 3200 Process controller
Computer Interface Software  :  Included
SRM Calibration samples  :  Optional
Bench-top Footprint (stand) Length x Depth x Height  :  10 x 10 x 15 (25 x 25 x 38 mm)
Bench-top Footprint (controller) Length x Depth x Height  :  18 x 12 x 5 (46 x 31 x 13 cm)





Model LSP-1000





General


A laboratory, bench-top, fiber elongation system for automatically determining Littleton softening point of a glass fiber below 1000C.

Operated according to ASTM C-338 Method or modified version of this procedure.

Includes
  • Bench top instrument console
  • 1000C furnace
  • programmable process controller
  • laser micrometer and controller
  • type "S" thermocouple
  • computer software
  • accessories and instruction manual. (Computer not included.)
Specification :

Model  :  LSP-1000
Warranty  : 12 Months
Accuracy  :  +/-2C
Atmosphere  :  Air
Temperature Range  :  RT to 1000C
Furnace Core :   Inconel
Heated Length  :  3.25 inches (83 mm)
Laser Type  :  FDA Class II / IEC Class 1
Laser Micrometer Range  :  0 35 mm
Sample Load  :  none
Thermocouple  :  Type S
Sample Size  :  235 mm long x 0.65 mm diameter
Power Control  : 4-20 ma
Power Requirements  :  120vac/10amp or 240vac/5amp, 50 or 60 Hz
Temperature Control  :  Honeywell UDC 3200 Process controller
Computer Interface Software  :  Included
SRM Calibration samples :   Optional
Bench-top Footprint (stand) Length x Depth x Height  : 10 x 10 x 15 (25 x 25 x 38 mm)
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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