NIST
National Institute of Standards and Technology

per il quale, gli strumenti di misura devono rientrare in
determinate tolleranze.

• Anemometro:
  +/- 5% a 6,12,25,40,75 mph (3,5,11,18,34 m/sec)

• Barometro:
  +/- 0.05Hg (+/- 1.3 mm/Hg, 1.7 mb, 1.7 hPa)

• Umidità esterna:
  +/- 3%

• Umidità interna:
  +/- 5%

• Temperatura esterna ed interna:
  +/- 1°F a -50,-15,0,40,80,140°F (+/- 0.5°C a -45,-26,-18,+4,+27,+60)

• Pluviometro:
  +/- 4% di 0.2mm

CE
Compatibilità elettromagnetica

• EMC:
  EN50082-1: 1991 Generic Immunity Standard for Residential, Commercial
  and Light Industrial Product
  EN55022: 1992 Limits and Methods of Measurement of Radio
  interference Information Technology Equipment

• SAFETY:
  EN60950 incl. amendments 1&2: Safety of information technology
  equipment including electronic business equipment

• Sono conformi alla direttica EC EMC 89/336/EC