The Centro di Taratura e Metrologia Oceanografica (CTMO) is the marine metrology and calibration facility of the Oceanography Section of the OGS (Istituto Nazionale di Oceanografia e Geofisica Sperimentale).
It provides the Section with the scientific and technical infrastructure necessary for making and guaranteeing high-quality observations of the marine environment in a way that continuously meets recognized international standards of excellence. A critical element of the services offered is the ability to calibrate and maintain sea-going instrumentation efficiently. The facility is run applying relevant international guidelines and protocols as much as practically possible in order to assure conformity or, at least, compatibility, with the regulatory standards governing this kind of activity worldwide. The CTMO is manned by a small team of experienced personnel, which also oversees the facility’s continuing scientific and technological development.
Thermally-regulated and humidity-controlled, the Centro di Taratura e Metrologia Oceanografica is currently equipped with primary physical standards, secondary transfer standards and support equipment for performing high-quality calibrations of devices or sensors measuring temperature and conductivity (salinity) able to meet the demanding oceanographic measurement specifications for these parameters. It is also endowed with a number of instruments for making standard electrical measurements of various kinds and functional tests, evaluations and validations of sensors used for measuring some other commonly monitored marine environmental parameters.
Temperature calibration set-up
Uncertainty: Typical expanded measurement uncertainty (95% level of confidence; k=2) for temperature: 0.0034 °C (ITS-90).
Conductivity/salinity calibration set-up
Uncertainty: Typical expanded measurement uncertainty (95% level of confidence; k=2) for conductivity: 0.00054 Siemens/m.
Other key test instrumentation