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UGM G4 (Ultrasonic Gas Meter) is a gas smart meter for domestic use. Its main
application is at the end point of delivery of natural gas network. It is suitable
also for use in LPG gas network. The device integrates an electronic ultrasonic
sensor able to measure the gas volume at standard condition (compensation
in temperature). It is equipped with an optical port for local communication and
a communication module for remote communication. Remote communication
allows the AMR (Automatic Meter Reading) services and the remote control
of the gas supply. The communication protocol used for local and remote
communications is DLMS/COSEM protocol. UGM meter is used in low
pressure measuring systems (< 0.5 bar) with ow less than 6 m3/h (A2 class,
according to the classication of UNI/TS 11291 norm).
1. Introduction
UGM meter is available in different models with the following common main
features:
• ultrasonic sensor;
• integrated temperature sensor;
• electro-valve to stop the gas supply;
•2 not-rechargeable batteries (metrological battery and communication
battery);
• optical port for local communication (compliant to IEC 62056-21 norm);
• integrated GSM module for remote communication ;
• LCD display (user interface);
• 2 push buttons (user interface);
• anti-fraud tamper switch.
The different meter UGM models differ in the following features:
•communication module type/model (GPRS, UMTS, NB-IoT, LTE Cat M1);
• meter size (G4) ;
•meter case (small, large) ;
•pitch pipe (100, 110, 152, 220, 250 mm)
•connection pipe (3/4”, 1”, 1 1/4”)
2. Safety Instructions
Observe the following Safety Instructions to ensure that neither persons or gas
meters are damaged during installation and operation
• Install device in the right orientation position (vertical).
•Install device in a compartment that complies with the applicable legal
requirements about security.
•Install device far from any damages originating by mechanical shock, heat
source or ame, i.e. place device in dry place protect against weathering.
• Do not scratch or rub during installation and use.
•Do not remove or damage metrological seals, if not authorized.
•The device must be installed only by an authorized installer, compliant to
the applicable legal requirements about security.
• Every technical change on the device is forbidden.
• Respect the construction parameter and security warnings.
•When tightening the tting not overcome the 110 Nm torque.
• Install the gas meter free of mechanical stress.
•Maximum pressure of the plant has to be lower than the maximum
pressure allowed for the meter (0.5 bar relative pressure).
•Relieve internal pressure completely before removing the device. Ensure
proper ventilation because of possible escapes of residual gas. Cap the
inlet/outlet connections.
• Do not install the meter if it is damaged.
•The integrated valve of the gas meter does not assumes the functions of
a safety shut-off valve.
•Before to connect to the plant be sure that the customer’s consumers are
closed.
•Before to connect to the plant be sure that the security shut-off valve
upstream the meter is closed, so there is no gas ow during installation.
•Any necessary meter pipe work, soldering, drilling or other installation
works must be completed before the meter is unboxed, uncapped and
tted.
SmartMeterQ disclaims all liabilities from the risks and
consequences of non-compliance with these prescriptions.
The following important safety instructions have to be ensured:
•All national rules for installation, operation, inspection and maintenance of
gas meters must be respected.
•If there is a risk of internal or external corrosion, inspect the device
regularly. If the device is clearly affected by corrosion, put it out of use.
•The operating conditions indicated on the meter front panel, especially
maximum admissible operation pressure and ow rate, have to be
respected. The device is not designed to withstand earthquakes and
oods.
2.1 ATEX
UGM meter is suitable for use in low risk atmosphere explosive area (risk only
for short period).
UGM meter is an intrinsically safe apparatus complies to the directive for
atmosphere explosive 2014/34/EU. It is suitable for installation in zone 2, gas
group IIB, category II 3G.
The UGM meter ATEX marking is: II 3G Ex ic IIB T3 Gc
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