Calibrations

Why calibrate?

There are at least three main reasons for calibrating measurement instruments:

  1. To ensure the readings obtained by an instrument reflect the actual conditions
  2. To define the accuracy of the readings taken
  3. To establish the reliability of an instrument, i.e. whether and to what extent we can trust the results it provides

The regular monitoring and calibration of measurement instruments is a mandatory requirement under the ISO9000 standards.

Size - Length

The Size-Length laboratory is located in a standardised grade 1 measuring room (according to the VDI / VDE 2627 standards), conditioned as follows:

  •  Temperature 20.0°C ± 0.3°C
  • Humidity 50% ± 10% rh

We specialise in the calibration of the most common mechanical instruments, and are equipped to measure special tools:

Callipers / micrometers / gauge blocks / plain gauges / threaded gauges / cylindrical gauges / plain ring gauges for zero-setting / threaded ring gauges / indicators / height gauges / surface plates / machine tools / lines / laser distance measurers / square rulers / protractors / spirit levels / templates / custom parts / etc.

Electrical

We calibrate and repair most electronic products.

The tools we calibrate include:

Multimeters / current clamps / oscilloscopes / generators / ohmmeters / LCR meters / data acquisitions / decade resistance boxes / earth resistance testers / hipot meters / network analysers / power meters / magnetic  flow meters / etc.

Torque

Torque wrenches are used when clamping is important, in order not to damage the thread or to ensure load homogeneity in a mechanical part held in place by several screws or bolts. One example is given by the head of spark-ignition engines. It is extremely important to calibrate and fine tune these tools, to avoid defects or damages during assembly.

The calibration of torque tools is performed in accordance with the DIN/ISO 6789 and UNI EN 26789 standards, and is envisaged for the following tools:

Torque wrenches0.1 cNm - 3000 Nm
Torque screwdrivers0.1 cNm - 50 Nm
Pneumatic screwdrivers1 Nm - 100 Nm
Torque wrench calibrators / Static Torque Transducers0.05 cNm - 3000 Nm
Temperature and humidity

The laboratory is equipped with thermostatic baths, hot ovens, a climate chamber, and a humidity and blackbody calibrator, to allow for calibration of the following instruments in accordance with international standards:

Room thermometers(5 ... 160°C)
Resistance thermometers(-10 ... +450°C)
Hygrometers(5 ... 95% Rh)
Infrared thermometers(RT ... +450°C)
Thermographic cameras(RT ... +350°C)
Contact probes(RT ... +400°C)
PT100 probes(-20 ... +160°C)
Thermocouples (K, J, ...)(-20 ... +450°C)
Pressure

Calibration takes place using either a nitrogen calibrator or a hydraulic (oil) system, to allow calibration in the same conditions of use as the pressure gauge. To generate pressure, a reference master gauge is used, with accuracy up to 0.005%.

Relative pressure gauges-1 ... 700 bar
Absolute pressure gauges0 ... 700 bar
Pressure generators-1 ... 700 bar
Onsite Measurements

We are equipped to perform calibrations and controls according to and in compliance with international standards, directly at the customer's premises. This is necessary when the production cycle does not allow for equipment to be moved or removed.

Examples:

  • EDM machines

    The service includes the measurement, analysis and optimisation of EDM machines. A new compensation table is created and transmitted directly to the CNC system.

    Flyer Laser (PDF approx 0.6 Mb)
  • Machine tools

    All systems and machine tools are checked in line with international standards [ISO 230/1 - ISO 230/2 - VDI/DGQ 3441].

    Calibration by laser measurement is an important tool that helps you check your production process, which may be required for the purposes of obtaining ISO9000 certification. Certificates attesting to the performance of the tools can be used as certification documents.

  • Surface plates

    Surface plates are checked in accordance with the DIN 876-1 standards, using electronic spirit levels to determine errors of flatness.

    If a plate should no longer meet the customer's specifications, our technicians will provide a quote on the spot, and, if accepted, will perform instant relapping.

Balancing Analysis - DSS

As the only calibration laboratory in Europe approved by DSS Dynamic Solution Systems, we are able to calibrate balancing analysis tools, such as microvib II, accelerometers and all related accessories.

You can view the DSS approval certificate on the accreditation page, or on the manufacturer's website: www.dssmicro.com

Services
Latest news All news
About Us
SCS-accredited independent laboratory for the parameters Length, Torque and Electric Current.
Metron Measurement SA
Via Luserte Sud 7
CH-6572 Quartino Map »
Tel: +41 91 780 49 37
Fax: +41 91 780 49 38