50mm To 350mm Inline Ultrasonic BTU Meter

The BTU meter is designed for accurate measurement of thermal energy consumption and is widely suitable for HVAC and district cooling applications, especially in Gulf countries where reliable performance in high-temperature environments is critical.

The system comprises an ultrasonic flow sensor and two high-precision temperature sensors. It calculates thermal energy consumption based on flow rate and differential temperature between supply and return water.

The ultrasonic flow sensor utilizes advanced non-invasive measuring technology, ensuring high accuracy and stable performance. It is not affected by impurities such as iron rust or external magnetic fields, making it ideal for demanding industrial and commercial applications.

The meter body is manufactured from high-strength cast iron using advanced molding and CNC machining processes, ensuring excellent mechanical durability and dimensional accuracy. This guarantees long service life, stability, and consistent performance even under harsh environmental conditions.

Temperature measurement is achieved using PT1000 platinum resistance sensors, combined with a high-precision AD circuit to deliver accurate and reliable readings.

The MCU is based on the MSP430 ultra-low power microprocessor, offering strong processing capability, minimal power consumption, and excellent resistance to electromagnetic interference. The system includes self-diagnosis, fault display, and power-loss data memory, ensuring data integrity and operational reliability.

Key Features

• Designed for export and Gulf region applications (high temperature & demanding conditions)
• High-precision ultrasonic flow measurement technology
• Measures and displays total thermal energy consumption
• Displays supply and return water temperature
• Displays differential temperature and real-time flow rate
• No mechanical moving parts – low maintenance and long life
• Low minimum flow detection capability
• Built-in real-time clock for data recording

Display & Installation

The BTU meter is equipped with an LCD screen for clear and accurate data display. It features a splittable design, allowing the calculator unit to be installed separately for easy monitoring and operation.

Protection class IP68 ensures reliable performance in harsh environments, including humid and dusty conditions commonly found in Gulf regions.

Connectivity & Functionality

• M-BUS / Modbus communication interface
• RS485 (optional) for remote monitoring
• Automatic error diagnosis and fault indication
• Data storage during power failure

Durability & Reliability

Engineered for long-term use in challenging environments:

• Robust metal body construction
• Waterproof calculator unit
• Shielded signal cables to prevent external damage (including rodents)
• Fully enclosed ultrasonic components for stable performance

Installation Flexibility

The BTU meter can be installed on either the supply pipe or return pipe, as per application requirements (to be specified at the time of ordering).