Static measuring principle
The measurement is performed in static mode (without moving mechanical parts) and is expressed in m3 at basic conditions (standard m3) on the meter display.
The technology is based on a MEMS sensor which measures the temperature differential between two detection points and which is proportional to the gas flow that passes through them
The system maintains the accuracy of the measurement even in the presence of variations in the composition of the gases within the H and L groups, as defined by the EN437 standard; the measurement of some characteristics of these gases allows us to compensate for the effects due to the change in density.
Measurement principle also allows you to identify the presence of air inside the meter; this allows you to use air for its calibration and to generate an alarm if the phenomenon occurs after installation
The meters can work with biogas mixtures and with a maximum H2 percentage of 20%.
Connectivity
The meters are equipped with an NBIoT modem for remote data communication and for updating the application software
DLMS communication protocol compliant with UNI/TS 11291-13
The same features are available locally via port.
Optics compliant with EN 62056-21.
Internal antenna with provision for connecting a remote antenna.
Field replaceable SIM accessible from the battery compartment without removing the metrological seals.
Data management
Approvals
SG meters have been verified and approved according to the following directives:
Measuring range | G10: 0.10-16.0 m3/h G16: 0.16-25.0 m3/h G25: 0.25-40.0 m3/h |
Standard reference temperature | 15 °C |
Operating temperature | -25 °C a 55 °C |
Standard Pressure | 1013.25 mbar |
Applicability | Gas of 2nd Family Groupps H and L (EN 437) |
Maximum operating pressure | 500 mbar |
Accuracy Class | 1.5 |
Delta P Max. | G10: <2 mbar at Qmax G16: <2 mbar at Qmax G25: <3 mbar at Qmax |
No. of tariffs | 3 |
Daily volume log size | > 72 days |
Time vollume log size | > 72 days |
Nominal Diameter DN | G 2"; G21/2- ISO 228/1 |
Interaxes | G10: 250-280 mm G16: 250-280 mm G25: 335 mm |
Water and dust resistance | IP 66 |
ATEX | zone 1 |
Ex II 2 G Ex ib IIB T4 | |
Display | Alphanumeric, 3 lines x16 characters + icons |
Optical port | EN 62056-21 |
Batteries | 2Lithium batteries D 3,6V (19Ah) |
Usefule life of batteris | 15 years |
Communication | Modem NBIoT band 3, 8 e 20 |
Data transport type | UDP |
Communication protocol | DLMS COSEM conform to UNI/TS 11291-13 |
Overall sizes (L x H x P) | 430 x 188 x 188 mm |
Weight | 5.7 kg |
Features and specifications approximate and subject to change.