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Other instruments:

- Control systems

- Measures

- Scales
 



Air flow meter

Accurate
scales

Anemometers

Multimeters

Calipers 

Analytical
scale

Coating
thickness
meters

Benchtop
Scales

Conductivity
meters 
Balanza de bolsillo HC-100AS
Crane
scales

Cup vane
anemometer

Floor scales

Current detector 

Hanging
Scales 

Distance meter
Balanza contadora
Humidity content
Scales

Earth meters

Kitchen
scales

Electronic
stethoscope

Laboratory
Scales

Gas analyser

Laboratory
scales   

Gas detector for refrigerants  

Multifunction
scales

Humidity
indicators

Packaging Scale

Humidity indicator
Balanza de precisión
Pallet balances

Infrared
thermometers

Pallet truck
scales

Insulation meter
Balanza de suelo
Paper Scale

Thermometers 

Platform scales

Tester for fuel 

Pocket
scales

Thermal
cameras 
Báscula pesa-ejes para coches
Postal scales

Oscilloscope 

Scale for
analysis

Microscopes

Scales for
transit

Microscopes
USB
 

Tabletop
scales

Noise meters

Tabletop Scale

Power analyzer  

Air flow transducers
Caudalímetro para líquidos
Power and
harmonics
 analyser

Digital
indicators

Radiation
analysers

Display systems

Radio frequency
meter

Logic modules

Rotation meter

Signal
converters

Videoscopes 

Temperature
transducers
Videoscopio
Voltmeter

Temperature sensors

Weather
stations

Vibration
transducers

Measurement of hardness: Explanation

Measurement of hardness
Hardness is the property of a material that enables it to resist plastic deformation, usually by penetration. There are elastic and dynamic processes to measure hardness. The usual method to achieve a hardness value is to measure the depth or area of an indentation left by an indenter of a specific shape, with a specific force applied for a specific time. According to the test force: macro hardness (F force > 30 N), small hardness load (3-30 N) and micro hardness (< 0,5N).There are three principal standard test methods for expressing the relationship between hardness and the size of the impression, these being Brinell, Vickers, and Rockwell. For practical and calibration reasons, each of these methods is divided into a range of scales, defined by a combination of applied load and indenter geometry
. There are available the DIN 50150 to compare the obtained results according to one of the selected measuring methods.

Brinell Hardness test
HB. An iron ball of tempered steel (HBS) or a hard metal ball (HBW) with a known diameter is pressed vertically with a test force F in an isolated testing surface. Test force is exerted during a defined time (from 2 to 8 seconds); incidence time must be from 10 to 15 seconds. Brinell hardness is calculated by the pressure diameter and the test force.
 The hardness measurement developed by Brinell is used for soft and medium hard metals, non-alloyed construction grade steel, aluminium, wood and work materials with irregular structures such as cast iron. An iron ball or one made of a hard metal is struck with a defined force for measurement against the surface of the material

Vickers Hardness test HV
The Vickers hardness test method consists of indenting the test material with a diamond indenter, in the form of a right pyramid with a square base and an angle of 136 degrees between opposite faces subjected to a load of 1 to 100 kgf. The full load is normally applied for 10 to 15 seconds. The two diagonals of the indentation left in the surface of the material after removal of the load are measured using a microscope and their average calculated. The area of the sloping surface of the indentation is calculated. The Vickers hardness is the quotient obtained by dividing the kgf load by the square mm area of indentation
. The Vickers hardness testt measures hard work materials but also the hardness of materials and thin walls or marginal areas.


Rockwell Hardness test
The Rockwell hardness test method consists of indenting the test material with a diamond cone or hardened steel ball indenter. For C and A versions (hard and very hard materials) as well as for N version (for thin walls) a diamond ball is used. For B and F versions (medium-hard and soft materials) or T (for thin walls) we use a steel ball.
The permanent increase in depth of penetration, resulting from the application and removal of the additional major load is used to calculate the Rockwell hardness number. The abbreviations for Rockwell are the following: HRC, HRA, HRB, HRF, HR- 15N, HR15T, HR30N, HR30T, HR45N, HR45T. The hardness value goes before teh abbreviation: 45 HRC; 76 HR45N. DIN 50103.

Shore hardness test
Testers of Shore hardness for rubber and similar work materials are composed of a spring loaded point which rebounds when it penetrates during testing, serving as a measurement of the corresponding Shore hardness, which is indicated in a scale from 0 Shore (2.5 millimeters of penetration) up to 100 Shore (0 millimeters of penetration)

Impact hardness test
Dynamic process to measure hardness. The calculation basis is the diameter of a ball pressure produced by a hammer (Poldi hammer) or by a winding spring. With the Poldi hammer the ball is pressed in a known test hardness bar. 

Here you will find all the measuring instruments available at PCE Instruments.

Contact:
PCE Instruments UK Limited
Units 12/13 Southpoint Business Park
Ensign Way, Southampton
United Kingdom, SO31 4RF
Phone. +44 ( 0 ) 2380 98703 0
Fax +44 ( 0 ) 2380 98703 0

Comeback to PCE-DD A digital durometer
 

Below you will find an overview of the different product groups of measuring instruments

 Absolute Humidity Meters
 Accelerometers
 
Alert Meters
 Air velocity meters
 Analyzers (Colour)
 Analyzers (Gas)
 Analyzers (Lan)
 Analyzers (Noise)
 Analyzers (Oxygen)
 Analyzers (Ozono)

 Anemometers
 Barometers
 Borescopes

 Cable detectors
 (electrical)

 Cameras (Infrared  
 Thermal Ima.)
 Capacitance Meters
 Coating Thickness
 Meters

 Chlorine Meters
 Clamp Meters
 Climate Meters
 Colour Meters

 Conductivity Meters
 Contact Thermometers
 Current detectors

 Data Loggers
 Differential Pressure   
 Meters
 Digital Multimeters
 Densimeters
 Detectors (Humidity)
 Detectors (Radiation)

 
Detectors (Voltage)
 
Dose Meters (Noise)

 Earth meters
 Endoscopes
 Environmental Meters
 Fiberscopes
 Flow Meters Air
 Flow Meters Gas
 Force Gauges (digital)
 Frequency Meters
 Gas detectors
 Geiger Counter
 Handheld Tachometers
 Hardness Meters
 Humidity Testers
 (Building material)
 
Hygrometers

Indicator Sound Level
Instruments (Environmental)

Impedance bridges
Infrared Thermometers
Isolation Meters

Lan Network Testers
Laser Distance Meters
Laser level
Laser meters
Laser thermometers
LCR Meters
Length Meters
Light Meters
Lux Meters

 Manometers
 Mat. Thickness Meters
 Measurement Devices

Measu Meters Distance.
Measuring Wheels
Meters (Distance, Power,
Pressure Radiation, Temperatur. Gas, Gloss)
Micrometers
Modular signal Converters
Moisture Indicator
Multimeters
Multi-Parameter Photometers

Noise Meters

 Odometers
 Ohm Meters
 Oscilloscopes
 Oxygen Meters
 Ozono Meters

Paper Moisture Meters
Penetrometers
pH-Meters
Pitot tube air flow
Pocket pH-meters
Power Analyzers
Pressure Gauges,
Pyrometers

 Quality Meters (Air)
 Radiation Counters
 Radioactivity meters
 Reader (Temperature)
 
Recoders Data

Redox Meters
Refractometers
Relative Humidity
Roughness tester

Salt Meters
Sensor (Temperature)
Signal Level Analyzers
Single-parameter Photometers
Sound Level Meters
Systems for Environ.
Stethoscopes (elect.)
Stroboscopes
Surface Thickness Meters

Tachometers
Telescope Meters
Thermo-anemometers
Thermo-Hygrometers
Temperature Probes
Testers (Conductivity, Earth, Electric, Insula.,  Noise,
pH, Resistance, Sound, Temp.)
Thermal stress
Thermal Imaging Cameras
Thermometers
Thermocouples
Thickness Meters
Turdibity Meters

Ultrasonic Flow Meters

VDE tester
Vibration Meters
Voltage meters