MET-U1AULTRASONIC HARDNESS TESTER, 15N TESTFORCE

118 PORTABLE HARDNESS TESTING

PORTABLE ULTRASONIC HARDNESS TESTER MET-U1A

FEATURES

The INNOVATEST MET-U1A differs completely from traditional hardness testers. Instead of measuring the size of the indentation of the test sample using a microscope, it uses a diamond indentor mounted on a vibrating rod that presses onthe test surface at a fixed load and then measures its hardness by applying ultrasonic vibrations and analyzing its damping effect.

The technique is very reproducible which makes the MET-U1A a perfect tool for on-site measurements such as maintenance of large scale structures, vehicles, ships, steel towers, bridges, air planes. It is ideal for inspection of thin materials or difficult to get area such as crank shaft, gears and grooved areas.

• Hardness measurements of metals and alloys on standardized hardness scales: Rockwell (HRC), Brinell (HB), Vickers (HV) and Shore (HSD)

• Three additional scales H1, H2, H3 for calibration of selfdefined hardness scales

• Rm scale for determination of tensile strength • Typically suitable for components that are inaccessable for dynamic hardness testers (small articles, structures with thin

walls, pipes, reservoirs, steel sheets etc.)• Leaves no visible indent on the tested article surface (crankshafts necks, mirrored surface, knives)

PORTABLE HARDNESS TESTING 119

TECHNICAL SPECIFICATIONS

Measuring principle According to the UCI method (ultrasonic contact impendance principle)

Measuring range Rockwell C scale HRC 20-70 Brinell scale HB 75-650 Vickers scale HV 75-1000Shore scale HSD 23-102Tensile strength MPa 378-1736

Reproducibility Rockwell C scale HRC 1.5Brinell scale HB 10 Vickers scale HV 12Shore scale HSD 2Tensile strength MPa 5%

Measurement results Computation of average value from the dataprocessing stored in the memory;

selective data deleting (for example, in caseof doubt in the conducted measurements)

Display lighting AvailableDisplay features Hardness scale, measured value, number of

measurement, operation mode, archivalnumber, battery charge indication, Auto-offafter 150 sec.

Memory 100 readings, also stored when test is switched off

Surface roughness <Ra 2.5Convex/concave >5mmMinimum specimen weight >0.01kgMaterial thickness Probe without position accessories >2mm

Probe with position accessories >1mmPenetration depth 0.03mm averageProbe operating life ±200000 measurement Measuring force 14.7 NPower supply AC mains, V / Hz100-240 / 50-60

Batteries AA, 1.2V (4pcs) Consumed power <3.0VA

Battery life Without lighting 16 hours, With lighting 8 hours

Battery charging time 8 hoursTransportation & -35°C ... +60°Cstorage temperatureOperating environment Relative humidity 30% ... 80%Overall size Gauge 180 x 80 x 42.4mm

Probe 160 / 25mm / ø7mm

STANDARD DELIVERY

• Main unit• U1 ultrasonic probe• Power unit• Batteries AA (4pcs) NiMh• Carrier bag• INNOVATEST® certificate• User and installation manual

OPTIONAL ACCESSORIES

• Hardness reference test blocks• Precision holding fixture for probe• Battery operated grinder• Changeable headpiece to probe• Probe stand

ORDER DETAILS

MET-U1A Ultrasonic portable hardness tester

ULTRAMATIC 2ULTRASONIC HARDNESS TESTER

FEATURES

The ULTRAMATIC 2 is the next generation portable and laboraty use ultrasonic hardness tester. The instrument covers several new advanced features that can be selected from a menu operated full color display.

• Ultrasonic Contact Impedance test principle, fast, accurate, easy to use in confined spaces• Full color display with easy to operate user interface• Suitable for hardness tests on metals, plastics, ceramics• Direct reading in Vickers HV, and direct conversion to HRC, HRB, HB & UTS• High reproducibility, tolerance within ±1%• Extensive range of application at locations difficult to access• Large memory, statistics and multiple data outputs• Optional dynamic rebound hardness impact devices available• Windows software for testing, remote control, data processing and file storing

120 PORTABLE HARDNESS TESTING

VICKERS PORTABLE HARDNESS TESTER `ULTRAMATIC 2` HV400

PORTABLE HARDNESS TESTING 121

STANDARD DELIVERY

• Main unit• Cable• Power supply 100-240V / 50-60Hz• Carrying case• Manual• INNOVATEST® certificate

OPTIONAL PROBES

• 10N, 20N, 30N, 49N, 98N force(Impact device D, DC, D+15, DL, G)

SOFTWARE OPTIONS FORMAIN UNIT

• SPS Option for use in automated testing systems

• Measurement of sinter materials• Storage of 30000 measurements

OPTIONAL ACCESSORIES

• High precision stand for probe• Probe shoes for flat surfaces• Probe shoes for convex surfaces

10mm - 50mm• Probe shoes for convex surfaces

50mm - 250mm• Probe SL type (slim nose)• Probe shoes for probe SL type

(width 21mm)• Windows software program for data

transmission to PC (incl. cable)• Windows software program for

production-following hardness testing• Plastic handle for probe • Carrier bag for main unit & accessories

TECHNICAL SPECIFICATIONS

Measuring principle According to the UCI method (ultrasonic contact impedance principle)Also available with dynamic impact devicesfor rebound hardness testing

Indentor Vickers diamond (angle 136°)Test load 3N, 10N, 20N, 30N, 49N, 98N

(different probes)Measuring range Vickers HV 10 - 3000 (direct)

Rockwell HRC 20 - 68 (conversion)Rockwell HRB 41 - 99.5 (conversion)Brinell HB (76) - 447 (conversion)UTS N/mm² 255 - 2180 (conversion)

Reproducibility Vickers HV ±1% Rockwell HRC ±0.5Rockwell HRB ±1.2Brinell HB ±1%

Applicable testing Preferably metals, for which HV400 can be materials calibrated. Examinations of ceramic(s), glass

and plastic are possible, if comparative measurements are accomplished for calibration.

Display Large full color graphical, backlit display, contrast and brightness adjustable, display ofhardness scales HV, HRC, HB

Calibration Storage of up to 20 calibrations for different materials

Display languages English, German, French (selectable)Memory 500,000 readings, storage in batches with

date, hour, and Go/No Go judgement Statistics Mean value, minimum, maximum, standard

deviation absolute and relative Delete single readings

Interface Serial RS-232C, RS-485, USB, Host, deviceParallel Printer

Printer output Prints hardness values, hour and datePrints statistics of stored data

Power Power supply 100-240V / 50-60HzBatteries Rechargeable 9.6V / 1700 mAh

(2.5 hrs charging, 8 hrs continuous use)Operating temperature 0°C to 50°CDimensions Display unit 85mmx225mmx198mm

Probe 19.5 diameter x 175mm lengthWeight 2200gr (including probe 190gr)

ORDER DETAILS

HV400 Hardness tester HV400 for portable accurate testing onmetals, plastics and ceramics

SHORE DUROMETERS

The durometer hardness scale was defined by Albert F.Shore, who developed a measurement device called a durometer in the 1920s. The term durometer is often usedto refer to the measurement, as well as the instrument itself.Durometer is typically used as a measure of hardness in polymers, elastomers, plastics and rubbers.

Durometer scalesThere are several scales of durometer hardness, used formaterials with different properties. The two most commonscales, using slightly different measurement systems, are thetype A and type D scales. The A scale is for softer plastics,while the D scale is for harder ones. There are 12 scales,depending on the intended use; types A, B, C, D, DO, E,M, O, OO, OOO, OOO-S, and R. Each scale results in avalue between 0 and 100, with higher values indicating aharder material.

Method of measurementDurometer, like many other hardness tests, measures thedepth of an indentation in the material created by a givenforce on a standardized presser foot. This depth dependson the hardness of the material, its viscoelastic properties,the shape of the presser foot, and the duration of the test.The durometers allows for measurements of the initial hardness, or the indentation hardness after a given periodof time. The basic test requires applying the force in a consistent manner, without shock measuring the hardness.

Depth of the indentation If a timed hardness is desired, force is applied for the required time and then read. The material under test shouldbe a minimum of 6.4mm.The final value of the hardness depends on the depth of theindentor after it has been applied for 15sec on the material.If the indentor penetrates 2.5mm or more into the material,the durometer is 0 for that scale. If it does not penetrate atall, then the durometer is 100 for that scale. It is for this reason that multiple scales exist. Durometer is a dimensionless quantity, and there is no simple relationshipbetween a material's durometer in one scale, and its durometer in any other scale, or by any other hardness test.

Durometer hardness of various common materials

Material Durometer Scale Bicycle gel seat 15-30 OO Chewing gum 20 OO Sorbothane 40 OO Sorbothane 0 A Rubber band 25 A Door seal 55 A Automotive tire tread 70 A Soft skateboard wheel 75 A Hydraulic O-Rings 70-90 A Hard skateboard wheel 98 A Ebonite Rubber 100 A Solid truck tires 50 D

122 SHORE DUROMETER

SHORE DUROMETERS

Test specimen Elastic recovery

Permanent depthof indentation

B C

AIndenter

Preload

applied Mainload

applied

Applied load

0-2.

5mm

D 0.79mm R 0.1mm

Durometer indentors

Shore A Shore D

D 1.1-1.4mm D 1.1-1.4mm

30°35”