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Automatic Ring and Ball


ASTM D36, EN 1427, NFT 66008, ISO 4625, DIN 52011, NFT 66147, IP 58

  • Accurate, Modern, Reliable, Fast, Versatile
  • Fully automatic tester with two independent test cells, compact and self contained
  • Four pre-set or programmable Softening Point methods: Repeatability and reproducibility according to the standard methods
    1. ASTM D36 / IP58 / DIN 52011 / NFT 66008 with water or glycerol
    2. ISO 4625 with water, glycerol, paraffin (resins, binders for paints and varnishes)
    3. NFT 60147 (compound paraffins and paraffin melts)
    4. Other specified methods with mineral oil or silicone
  • Enhanced temperature detecting range from 0� C to +250� C
  • Controlled stirring speeds and glycerin preheating cycle (�1� C)
  • Automatic recooling by air fan at end of test (less than 5
  • minutes)
  • Programmable safety on heating block, sample, probe, initial temperature
  • Auto calibration of the PT100 probe from the keyboard by means of regulated bath or variable resistor box and software
  • Supervision maintenance and calibration software utilities
  • Printer and RS 232C PC outputs for curve tracking and data processing
    The fully automatic NBA 440 Ring and Ball Tester performs a dual determination of softening point of bituminous materials, waxes, rubbers, adhesives and similar products in the range 0� C to 250� C by using distilled warer (up to 85� C), glycerol (from 80� C to 157� C), ethylene glycol(+30� C to 110�C), paraffin, mineral oil or silicone oil (+80� C to 199� C). The softening point is reported as the mean of the temperatures out of which two disks soften enough a ball, enveloped in bitumen, to fall a distance of 25 mm.

    Two horizontal disks of bitumen in, casdt in shouldered or straight brass rings, are heated at a controlled rate (4.5 to 5.5� C per minute) in a liquid bath while each supports a steel ball. Stirring temperature rate, detection and safety are automatically controlled, recorded and displayed by means of the NBA 430 processing unit or by means of a computer.

  • Complete instrument according to the standards with full diagnostics
  • Selection of method to be performed by means of supervision software
  • Display and tracking program, parameters, time, sample and results
  • Results, test data and heating profile are printed out at the end of the test
  • Standard RS 232 C output for PC and 25 pins parallel output for printer
  • Ticket printer, PC connection and power supply cables supplied with tester
  • Stirrer with two programmable speeds and four propellers to ensure a good temperature stability
  • Fall detection by light barrier and ajustment of sensitivity by software
  • Programmable set-up temperature of sample at start and end of test
  • Programmable end of stirring just before detection to avoid disturbances
  • Print-out of test configuration on request
  • Drain system in case of beaker breaking
  • Programmable emergent stem correction
  • Measurement of sample temperature by 4-wired glass PT100 (1/10 th �C)
  • Sample-tight keyboard located in the front panel of the upper module
  • Electronics isolated from hot and mechanical parts
  • Maintenance utility to operate or check all logical inputs and
  • outputs
  • Safety alarms are triggered,. message displayed and shut-offs
  • activated in case of faulty probe, abnormal initial test
  • temperature and overheating
  • Programmable over-heating safety cut-out on heating element and sample
  • Automatic calibration and storage of test parameters bymeans of software
    SIZE : 260 x 535 x 500 mm
    SUPPLY : 230V � 10% - 50/60 Hz
    CONSUMPTION : 1200 Va
    WEIGHT : 20 Kg

  • Official PT 100 Calibration
  • Metallic PT100
  • 80 columns graphical plotter
  • Print out of temp gradients
  • Other voltage supply
  • See also:
    Automatic Ring & Ball Tester Model D36-EN1427