Máy xác định nhiệt độ điểm ủ nhiệt độ điểm biến dạng hoặc độ nhớt Thủy tinh BBV-1000 ORTON
    Máy xác định nhiệt độ điểm ủ nhiệt độ điểm biến dạng hoặc độ nhớt Thủy tinh BBV-1000 ORTON

    Máy xác định nhiệt độ điểm ủ nhiệt độ điểm biến dạng hoặc độ nhớt Thủy tinh BBV-1000 ORTON

    Mã: 1178-20170 Danh mục:

    Beam Bending Viscosity

    The Model BBV series instrument is a versatile beam bending viscometer system that can determine;

    1. annealing & strain point temperatures of a solid glass beam according to the ASTM C-598 procedure or,
    2. 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 4°C 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
    • 1000°C 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.)

    Specifications

    Model BBV-1000
    Warranty 12 Months
    Range Log 14.0 – Log 9.0 Poises
    Atmosphere Air
    Temperature Range RT to 1,000°C
    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)