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Laboratories for Metrology

  • GALILEO at CENTER TELESPAZIO SPA
  • CMM Laboratory POGGIOLI SRL
  • ZANELLI SRL METROLOGY
  • temperature-close-control
  • CMM Laboratories Branca Idealair
  • MAGNETI MARELLI Metrological room Branca Idealair
  • MITUTOYO Laboratory for metrology and CMM by Branca Idealair
  • MICROTEC Metrological lab Branca Idealair
  • ISOTTA FRASCHI MOTORI SpA Metrological room
  • ISOTTA FRASCHINI MOTORI Spa Laboratory for metrology Branca Idealair
  • SAU (Polinago) Metrological Lab Branca Idealair
  • TELESPAZIO Spa Maser Clock controlled room by Branca Idealair
  • SECO TOOLS CMM Temperature close-control room by Branca Idealair
  • MITUTOYO Spa Metrological lab Branca Idealair
  • FRASCOLD (Rescaldina - Italy) CMM controlled temperature Lab by Branca Idealair
  • PAMA Spa (Rovereto) CMM Lab Branca Idealair
  • Politecnico di Milano Termometry dipartment Laboratory Branca Idealair
  • Laboratories for dimensional metrology Branca Idealair

The constant close control on Temperature is a fundamental requisite for dimensional metrology according to the ISO 1 International Standard that fixes the reference temperature at 20C for geometrical specifications (GSS).

The requirements are various depending on the application fields, on measurements accuracy of coordinate measuring machines (CMM) and on geometrical parts to be conditioned.

metrological-roomsLaboratories for CMM Branca Idealair

Even if the requirements specify that it is not compulsory that all calibrations and tests for the acceptance of mechanical parts must be done at 20C, it is indicated that a measurement done at a different temperature may lead to apply an offset on final results contributing to the increase of measure uncertainty.

Calibrations and measurements done with CMM (large bridge-type machines, bridge-type measuring machines and servo-driven gantry style machine, etc.) are performed in air conditioned rooms with variable air volumes depending on machines dimension, but always as same requisite is the importance to keep the at a constant temperature of 20C and with a reasonably low percentage of relative humidity (%) to reduce at minimum level the apply of an offset and having more reliable and reproducible measurements.

metrological room designed by branca idealair CUSTOMER REFERENCES

Acceptable limits for temperature gradients are around 0,5C, which has to be set in order to define clearly how much temperature could acceptably move from 20C during the test activities without penalizing excessively the quality of measurements. For this reason it is important that the precision air conditioning system maintains the temperature under close control and relative humidity (%) higher threshold too through a constant regulation.

Branca Idealair offers three solutions for Metrology laboratories:

SOLUTION 1 : The Climatic Element - Branca Idealair
High accuracy measurements with the precision air conditioning handled from the "Climatic Element Branca Idealair" with a proper thermal insulation of laboratory followed by specialized technicians from S.T.A. Branca Idealair able to guarantee the thermo-hygrometric parameters below:

Temperature:
20 0,1C
Relative humidity:
45 + 5%

or:

Temperature:
23 0,1C
R.H.:
50 5%


Spatial Temperature gradient:
≤ 0,05 C/m
Temporal Temperature gradient:
≤ 0,05C/h
0,1C/day
Air velocity on the worktop:
≤ 0,15 m/s


View the unit model that fit your Laboratory air volume (m3):


DIRECT EXPANSION MODELS


TYPE MINI: 9 25 m3
Branca-DX-Type-MINI
TYPE 0: 20 50 m3
Branca-DX-Type-0
TYPE 1: 50 100 m3
Branca-DX-Type-1
TYPE 2: 100 200 m3
Branca-DX-Type-2
TYPE 2S: 200 300 m3
Branca-DX-Type-2S
TYPE 3: 300 500 m3
Branca-DX-Type-3
TYPE 4: 500 800 m3
Branca-DX-Type-4



COOLED-WATER MODELS


TYPE MIN: 20 100 m3
Branca-hydronic-Type-MIN
TYPE MED: 100 300 m3
BRANCA-hydronic-Type-MED
TYPE MAC: 300 800 m3
BRANCA-hydronic-Type-MAC




SOLUTION 2: CABINET

Cabinet

Solution 2 is equipped with an insulated chamber with a Climatic unit Type 0T that ensures the following reference ambient parameters:

Temperature:
20 0,1 C
Relative humidity:
45 + 5 %

or for Electrical Metrology applications:

Temperature:
23 0,1 C
Relative humidity:
50 2%


SOLUTION 3 : MEASURE BOX

Measure-box

Available various air volumes specified chosen by the customer the "Measure box" is the ideal solution to get an extremely satisfactory precision air conditioning of parts (for example commonly used for Johnson gauge blocks) inside a small air volume preliminary chosen by the customer and guaranteeing the tolerances here below:

Temperature T1:
(20-23) 0,01C
Temperature T2:
(20-23) 0,1C
Temperature T3:
(20-23) 0,5C
Relative humidity:
50 2%




CUSTOMER REFERENCES:
Prof. Guglielmo M. Tino (Dipartimeto di Fisica e Astronomia and LENS Laboratory)
Universit degli Studi di Firenze
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

POLO scientifico - Via Sansone 1 I-50019 Sesto Fiorentino (Firenze) ITALY
Tel.: +39 055 457-2034 (Office) - 2214 (Lab), - 2462 (Lab)
Fax.: +39 055 457-2121
Email: guglielmo.tino@fi.infn.it
Web: http://coldatoms.lens.unifi.it/tino

"... In several occasions I had the opportunity to advice other colleagues about your excellent realization of the precision air conditioning system of our MAGIA laboratory; that was an essential element for the success of the MAGIA experiment whose goal was the accurate measurement of the gravitational constant G which is a fundamental physical constant of metrological interest. ..."



Dott. Vincenzo Greco (CNR Istituto nazionale di ottica)
Largo Enrico Fermi, 6 50125 Firenze (Italy)
Tel.: +39 055 2308271
Fax.: +39 055 2337755
Email: vincenzo.greco@ino.it
Email1: vgr.greco@gmail.com
Web: http://www.ino.it/home/greco/

"... As anticipated by phone call we perform temperature measures inside our conditioned room for a period of 3 hours with time sampling of 5 minutes. The data anlyses shows that in 1 hour the flunctuation of temperature values in correspondece to the average value is +/- 0,1 C (measure uncertainty 2 sigma that represents for a normal distribution corresponds to a level of reliability of 95%) ... "



WEB LINKS

MeasureBOX
MeasureBox METROLOGY

MeasureBox for Metrology, Comparison of gage blocks by calibration and PM10 analyses

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