ISPRA Istituto Superiore per la Ricerca e la Protezione Ambientale

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26,400,778 VISITS SINCE 5/1/2011  1 CONNECTED USERS

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National Tidegauge Network

General information

Networks

Tidegauge

Anomalus waves

Levelling

Stations

Ancona

Anzio

Bari

Cagliari

Carloforte

Catania

Civitavecchia

Crotone

Gaeta

Genova

Ginostra

Imperia

La Spezia

Lampedusa

Livorno

Marina di Campo

Messina

Napoli

Ortona

Otranto

Palermo

Palinuro

Ponza

Porto Empedocle

Porto Torres

Ravenna

Reggio Calabria

Salerno

San Benedetto del Tronto

Sciacca

Strombolicchio

Taranto

Tremiti

Trieste

Valona

Venezia

Vieste

Stations comparison

Sensors

Air temp. & rh% transducer

Barometric sensor

Hydrometric staff

Level pressure

Multi parameter probe

Radar level transducer

Ultrasonic tidegauge

Water level sensor

Water temperature transducer

Wind direction transducer

Wind speed transducer

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BAROMETRIC SENSOR - SIAP+MICROS PA9880

The digital barometer is the VAISALA model PTB220B.
The sensing element of PA9880 pressure sensors is a symmetrical silicon capsule that deforms depending on the atmospheric pressure. The transducer is characterised by a very low thermal expansion coefficient and a negligible mechanical hysteresis: both the above characteristics allow high performances mainly in terms of long time stability.
Two gold electrodes are soldered onto the internal surfaces of the capsule in order to create a variable capacitor. An atmospheric pressure increase induces an approach of the electrodes that causes an increase in the capacitance value. The capacitance value is then converted into a voltage by an integrated circuit included in the sensor.
The sensor includes also a digital circuit whose function is to linearize the transducer response and to compensate the pressure data in all the operating temperature range.

Technical data

Transducer: Silicon Capacitor
MeasurementRange: 500 1100 hPa
OverallAccuracy: ( 0.3 hPa maximum)
Resolution: + 0.1 hPa
Linearity: 0.05 hPa
Hysteresis: 0.01% FS
ResponseTime(transducer): < 10 ms
AcquisitionInterval: Programmable
AvailableData: instantaneous
Output: serial RS232/TTL
Operatingconditions: Temperature -4060 C: Humidity 10100 %
Dimensions: 145x1138x65 mm
Weight: 0,95 Kg

BAROMETRIC SENSOR

This sensor is installed into these stations:

Ancona, Anzio, Bari, Cagliari, Carloforte, Catania, Civitavecchia, Crotone, Gaeta, Genova, Ginostra, Imperia, La Spezia, Lampedusa, Livorno, Marina Di Campo, Messina, Napoli, Ortona, Otranto, Palermo, Palinuro, Ponza, Porto Empedocle, Porto Torres, Ravenna, Reggio Calabria, Salerno, San Benedetto Del Tronto, Sciacca, Strombolicchio, Taranto, Tremiti, Trieste, Venezia, Vieste

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