G4 GPRS

A comprehensive range of smart and integrated gas meters small and easy to install displaying readings in standard cubic meters, no external devices needed for conversion and for communication, for an accurate billing transparent to the end customer.

Domusnext G4

 

 

 

G4 Meters Integrated shut-off valve (optional) Remotely controllable for end-customer contract management.

  • GPRS (P2P)

 

GENERAL CATALOG  TECHNICAL DATA USER MANUAL

Innovation and reliability

have passed the most stringent reliability tests

Despite being highly innovative, Domusnext® meters have passed the most stringent reliability tests, conducted by notified body and designated laboratories recognised at European level. This certifies the robustness of MeteRSit meters and the accuracy of their measurements, even at high concentrations of dust and contaminants in the gas distribution networks. The high accuracy of the measuring principle ensures the gas meter compliance with the MID (MeasuringInstruments Directive). Such micro-thermal measuring principle is also commonly used in laboratory instruments. Resistance to contaminants and dust is ensured by design.

An innovative static measurement principle

measurement technology is based on a MEMS

Measurement is intrinsically compensated in temperature and independent from pressure. Measurement is displayed directly in standard cubic-meters*. The measurement technology is based on a MEMS "Micro Thermal Flow Sensing" principle. Two temperature sensors are symmetrically placed around a micro-heating element: under stopped-flow conditions, both sensors measure the same temperature. As the flow rate increases, heat is carried away from the upstream sensor towards the downstream sensor and the measured temperature difference between the two sensors is proportional to the mass flow rate.

Gas recognition

calibrating it self accordingly without any additional adjustment.

The accuracy of measurement is not affected by changes in the chemical composition of the European distributed gases within the 2nd family groups H and L (as defined by EN 437:2003). By measuring specific gas properties, a pre-set auto-calibration process guarantees the required accuracy levels without any additional adjustment. The meter is also able to operate in air (test phase), by calibrating it self accordingly without any additional adjustment.

Tariff management

5 daily tariff bands

Management of 3 tariffs, with consumption divided into 5 daily tariff bands, which can be programmed for weekdays, weekends/public holidays and daylight saving time.

Connectivity

Integrated high performance antenna

The application software can be remotely updated or locally updated via optical port in accordance with the EN 62056-21. SIM card is replaceable on location; it is accessible from the battery compartment. The meter is equipped with an Integrated high performance antenna.An external antenna is available on request..

Noise level

for domestic application

Thanks to the static technology adopted, the meter has a very low level of noise and practically no wear . This characteristic is well appreciated in particular for domestic application.

Accuracy of measurement

at every temperature and at every pressure

Domusnext® meters provide an exact measurement of supplied gas in standard m3, avoiding the use of annual average temperatures and conversion factors, which inevitably lead to approximate values and errors of estimation. These errors then affect the amount billed.

The measurement principle

Measurement is intrinsically compensated in temperature and independent from pressure. Measurement is displayed directly in standard cubic-meters*.The measurement technology is based on a MEMS "Micro Thermal Flow Sensing" principle. Two temperature sensors are symmetrically placed around a microheating element: under stopped-flow conditions, both sensors measure the same temperature. As the flow rate increases, heat is carried away from the upstream sensor towards the downstream sensor and the measured temperature difference between the two sensors is proportional to the mass flow rate.

Principio di misura

The high accuracy of the measuring principle ensures the gas meter compliance with the MID (Measuring Instruments Directive). Such micro-thermal measuring principle is also commonly used in laboratory instruments. Resistance to contaminants and dust is ensured by design: sensor module configuration prevents dust from affecting sensor response. The accuracy of measurement is not affected by changes in the chemical composition of the European distributed gases within the 2nd family groups H and L (as defined by EN 437:2003).

By measuring specific gas properties, a pre-set auto-calibration process guarantees the required accuracy levels without any additional adjustment. The meter is also able to operate in air (testphase), by calibrating itself accordingly without any additional adjustment.

* According to UNI EN ISO 13443 standard

1 Shut-off valve: Integrated shut-off valve (optional), which can be remotely controlled, in accordance with EN 16314.2 Consumption curves: Hourly and daily consumption storage for 72 days. 3 Tariff management: Management of 3 tariffs, with consumption divided into 5 daily tariff bands, which can be programmed for weekdays, weekends/public holidays and daylight saving time. 4 Small Size: Compact design. Easy to install and initialise. 5 Measurement and certifications: MID certifications Module B T10362 and Module D EC-193. 6 Encryption / Authentication: AES 128-bit encrypted communication.. 7 Replaceable SIM: SIM is replaceable on location; it is accessible from the battery compartment. 8 Alarms: Alarms to signal abnormal operating conditions and suspected hacking. Logger to record alarms and events. 9 Software Upgrade: The application software can be remotely updated.