Digital gas meter UGM-G

ultrasonicIoT

Product Overview
The UGM-G series ultrasonic gas meter is designed for gas measurement in closed-pipe systems. It comprises a fluid passage, ultrasonic transducers, an indicating device, a main control module and batteries. The meter calculates flow from ultrasonic time-of-flight (downstream and upstream propagation) and displays instantaneous flow and cumulative volume. The design uses pure electronic metering without mechanical moving parts.

Key Features

• Pure electronic metering with no mechanical loss
• Direct display of instantaneous flow and cumulative volume
• High measurement accuracy and long-term stability
• Power: 4 × AA 1.5V alkaline batteries for wireless communication and valve control
• Dedicated DC3.6V ER lithium for ultrasonic module electronics
• Wireless communication options: LoRa or NB-IoT
• External DC9V input on applicable models
• Gas alarm passive switch input on applicable models

Measured Gases

• Natural gas
• Liquefied petroleum gas (LPG)
• Air
• Nitrogen
• Other inert gases

Metrological Specifications

• Accuracy level: 1.5
• Indication error for qmin ≤ q < qt: ±3%
• Indication error for qt ≤ q ≤ qmax: ±1.5%
• Maximum working pressure: 10 kPa

Electrical and Communication Specifications

• Ultrasonic module battery: DC3.6V ER lithium
• Primary batteries: 4 × AA 1.5V (for wireless communication and valve control)
• External power support: DC9V input (on applicable models)
• Wireless communication: LoRa or NB-IoT
• Unit pulse output: 10 L/P
• Infrared communication available
• Communication protocol: CJ-T 188; Baud rate: 1200 bps

Display and Data Functions
The LCD shows battery level, replacement reminder, recharge reminder, valve status and abnormal status indicators. It supports display of remaining amount, purchase amount, unit price and accumulation. The meter stores self-diagnosis alarm information for abnormal flow, ultrasonic sensor status, battery voltage and valve status.

Use and Storage Conditions

• Operating temperature: -20°C to +50°C
• Storage temperature: -25°C to +55°C

Protection and Safety Information

• Protection rating: IP65
• Explosion-proof grade: ExibIIBT3 Gb

Technical Specifications

• Product family / model series: UGM-G
• Measurement principle: Ultrasonic time-of-flight (downstream and upstream propagation)
• Displayed values: Instantaneous flow and cumulative volume
• Accuracy level: 1.5
• Indication error: qmin ≤ q < qt: ±3%; qt ≤ q ≤ qmax: ±1.5%
• Maximum working pressure: 10 kPa
• Ultrasonic module battery: DC3.6V ER lithium
• Primary batteries: 4 × AA 1.5V
• External power input: DC9V (where applicable)
• Wireless options: LoRa or NB-IoT
• Unit pulse output: 10 L/P
• Infrared communication: available
• Protocol: CJ-T 188; Baud rate: 1200 bps
• LCD functions: battery level, replacement reminder, recharge reminder, valve status, abnormal status, remaining amount, purchase amount, unit price, accumulation, self-diagnosis alarm storage
• Operating temperature: -20°C to +50°C; Storage temperature: -25°C to +55°C
• Protection rating: IP65
• Explosion-proof grade: ExibIIBT3 Gb