ugm g4 smartmeterq

UGM-G4 / TGM-G4 Gas Smart Meter Series

The UGM-G4 Smart Meter Gas is designed and manufactured to measure the volume of Natural Gas and Liquefied Petroleum Gas (LPG). The measurement technology is based on an innovative ultrasonic sensor which integrates also the temperature sensor for volume conversion and permits to obtain an high precision and performance. The gas meters satisfy the new generation of smart devices to fulfill all requirements of European and International standard MID-OIML. Quality guarantee Made in Italy.

Main Features

  • ultrasonic flow sensor;
  • integrated temperature sensor;
  • integrated shut off valve;
  • high corrosion-resistance coated steel with coating composition of zinc in combination with aluminum, magnesium and silicon;
  • indoor and outdoor installation;
  • electronic circuit designed for severe environment areas;
  • integrated earthquake sensor for automatic shut off valve (optional);
  • custom application by integrated valve, prepayment and multi tariff management;
  • low losses and low flow measurement;

Technical Features

Local interface

Optical port ZVEI compliant to standard IEC 1170 (EN62056-21) Communication protocol in accordance with UNI/TS 11291 (DLMS/COSEM)

GSM Communication module (PP4)

2G or 3G or 4G or fallback, depend of the model (see the order code for variant)

RF Communication module (PM1)

Modulo Radio 169/868MHz 500mW (27dBm) WMBus mode N Communication protocol in accordance with UNI/TS 11291 (DLMS/COSEM)

LoRaWAN communication module

Radio module 433/470/779/864/865/915/920/923MHz 100mW (20dBm) Communication protocol LoRaWAN (DLMS/COSEM)

Communication protocol

Communication protocol in accordance with UNI/TS 11291 (DLMS/COSEM) DLMS Association Authentication Algorithm: High Level Security with AES-128-GMAC (Galois Message Authentication Code) Data messages Authentication/Encryption algorithm: AES-128-GCM (Galois/Counter Mode)

WIRED M-BUS communication module

Communication protocol Wired M-BUS EN13757-2/3

Estimated battery life

Metrological battery: ≥15 years Communication battery: ≥10 years

Mechanical environment class


Electromagnetic environment class


Resistance to high ambient temperatures

T (EN 14236)

Resistance to dust and water


Resistance to impact


Index enclosure

Polycarbonate V0 UV resistant, RAL7040 – other colours on request

Metallic body

High corrosion-resistance coated steel with coating composition of zinc in combination with aluminum, magnesium and silicon


Zone 2 (II 3G Ex ic IIB T3 Gc X)

Gas Type

Natural gas, LPG

Gas group family

2: H, L, E (EN 437) 3: P (EN 437)

Accuracy class (MID)

Class 1.5

Lowest flow rate measurable (Qstart)

0.003 m³/h

Minimum flow rate (Qmin)

0.012 m³/h

Transitional flow rate (Qt)

0.6 m³/h

Maximum flow rate (Qmax)

6.0 m³/h (Qr Overload = 7.2 m³/h)

Measurement accuracy

Qmin to Qt → ±3.0% Qt to Qmax → ±1.5%

Std temperature for gas volume

+15 °C (Configurable)

Maximum pressure

500 mbar

Load loss

≤ 2 mbar

Gas temperature

-25°C to +55°C

Ambient temperature

-25°C to +55°C

Storage temperature

-25°C to +60°C

Relative humidity

0% to 95%) (non-condensing)

Electrovalve (EN 16314)

Integrated valve with status signal Max leakage: 120 cc/h at Pin = 500 mbar

User interface (UNI/TS 11291.6)

Display LCD icons and chars Visible area 73x21mm Cubic Metres indications 8 digits (3 decimals) 2 push buttons


W mm

C mm

H mm

M mm

D mm

G mm




100 * 110





3/4″ ** 1″** 1″¼



152 * 220 * 250





3/4″ ** 1″ ** 1″¼


Small: 1.61 kg Large: 2.53 kg

G4 misure

* With space adaptor, ** With connection adaptor
(These spare parts are not included)

Order Code: Customize Your Smart Meter

Each Order Code represents a unique configuration of your smart meter. Discover all customization options in our product catalog.