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

TECHNICAL FEATURES
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.

PRINCIPLE
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.

TECHNICAL SPECIFICATIONS:

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

SPECIFICATIONS C/N�: 40 100
SIZE : 260 x 535 x 500 mm
SUPPLY : 230V � 10% - 50/60 Hz
CONSUMPTION : 1200 Va
WEIGHT : 20 Kg

OPTIONS

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

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