Ultrasonic Gas meter | Sarf G4 Vertical | +Modem, SIM card, valve, certificate

Vertical SARF GPRS G4 ultrasonic gas meter

🔥 The vertical SARF GPRS G4 is an electronic natural-gas meter with ultrasonic measurement, automatic temperature compensation and remote data transmission.

It is designed for installation in vertical pipework and features a compact DN15 threaded connection. The model is suitable for apartments, cottages and small commercial properties.

🏠 Suitable for smaller installations

The G4 size is generally used for one or two gas-consuming appliances, such as:

• a gas cooker;
• a cooker and gas water heater;
• a small boiler after flow calculation;
• a small commercial installation.

The final meter size must be selected according to the combined maximum gas consumption of all appliances.

↕️ Vertical configuration

This version is intended for vertical pipe installation. It differs from the horizontal SARF G4 in body design, inlet and outlet arrangement, DN15 connection and installation dimensions.

📊 Measuring range

• minimum flow — 0.016 m³/h;
• nominal flow — 4 m³/h;
• maximum flow — 6 m³/h;
• sensitivity threshold — 0.016 m³/h;
• stated accuracy — 1.5%.

📡 GSM/GPRS communication

The integrated modem transmits readings over GSM/GPRS 900/1800 MHz to a compatible gas AMR system.

A prepaid SIM card is stated as included.

Confirm the mobile operator, prepaid period and future service charges before purchase.

🔌 Additional interfaces

• RS-485 wired data interface;
• optical port for configuration and diagnostics.

🌡️ Temperature compensation

An integrated temperature sensor allows the measured gas volume to be corrected to standard temperature conditions.

🔒 Integrated shut-off valve

The valve may stop gas supply following debt, a detected fault, reverse flow or an authorised command from the utility system.

The meter and valve must not be opened, modified or repaired by the user.

🛡️ Operating conditions

• gas-pressure range — 0 to 50 kPa;
• operating temperature — −30 to +55 °C;
• ingress protection — IP54;
• power supply — integrated battery.

📐 Dimensions

• meter dimensions — 252 × 100 × 98 mm;
• package dimensions — 290 × 125 × 125 mm.

✅ Key advantages

• vertical installation;
• DN15 connection;
• ultrasonic measurement;
• 0.016–6 m³/h range;
• 4 m³/h nominal flow;
• 1.5% stated accuracy;
• temperature compensation;
• GSM/GPRS modem;
• SIM card included;
• RS-485 interface;
• optical port;
• integrated shut-off valve;
• gas AMR integration;
• IP54 protection;
• 12-month warranty;
• stated ten-year service life;
• manufactured in Uzbekistan.

📦 Package contents

• vertical SARF GPRS G4 gas meter;
• integrated GSM/GPRS modem;
• SIM card;
• integrated shut-off valve;
• mounting connection parts;
• product passport;
• certificate;
• factory packaging.

⚠️ Confirm before ordering

• exact connection-thread size;
• gas-flow direction;
• installation spacing;
• battery type and service life;
• SIM-card operator;
• prepaid mobile-service period;
• RS-485 protocol;
• compatibility with the regional gas AMR system;
• modem-configuration procedure;
• valve-reopening procedure;
• verification date and interval;
• gasket inclusion;
• documents required for utility registration.

⚠️ Important: installation, leak testing, configuration, commissioning and sealing must be performed only by an authorised gas-service specialist.