Ultrasonic Btu Meter

The clamp-on ultrasonic heat meter is combined by our high accuracy clamp-on ultrasonic flow meter together with standard platinum temperature sensors (PT100 or PT1000),then get result of thermal energy measurement transferred from flow measurement  in a closed pipe accordingly.

The ultrasonic heat meter system mainly includes three parts: the main unit, the ultrasonic clamp-on type transducers, and the temperature sensors(PT100 or PT1000). The main unit is a high-accuracy ultrasonic transit-time flowmeter. Its enclosure can be a standard version or an explosive-proof version. The ultrasonic transducers are clamp-on type and very easy to install. The temperature sensors can be standard Pt sensor or customer-supplied sensor.

The calorimeter can be used for energy consumption measurement of a heating / cooling system in office buildings, apartment complexes, or any  liquid-based thermal energy production system. It can also be used to monitor the efficiency of an energy production system such as HVAC installation.

Key Features:

• Horizontal or vertical Installation 
• Transducer Max Temp: -20C to +160C
• Accuracy: +/-1% of reading above 0.6ft/sec / 0.2 m/sec
• Outputs available: 1x 4-20mA , 1x Pulse Output , 1x Alarm Output (All configurable)
• ModBus output
• Ingress Protection: Display= IP65, Transducers= IP65 (IP68 on request)

These ultrasonic flow meters can be used on virtually any pipe size or material, are non-invasive and are therefore not prone to the levels of deterioration that are seen by traditional intrusive flow meters. Mbus converter, Radio Pulse transmission and GSM/GPRS Telemetry / logging options on request.

Features:

• High accuracy - ±1% of reading
• Bi-directional flow measurement
• Wide range of fluid velocities - 0.03 ~ ± 105 feet/sec.
• Transducers for pipe sizes ranging from ½" to 240" (15 to 6000 mm)
• Measures energy consumption rate and total
• No moving parts,
• Fixed and Portable version
• Proven ultrasonic technology for flow measurement and PT 100 for temperature
• Clamp-on, spool piece or insertion mounting for flow measurement
• RS485 and Modbus communication protocols available
• 4-20mA and pulse outputs with available relays and alarms
• Data logger function - includes time & date, totalizer, diagnostics
• Fast response time - less than 1 second
• NIST traceable calibration certificate (optional

Applications:

• BTU metering system
• HVAC/Energy Monitoring
• Building Automation / HVAC
• Energy consumption supervision and water conservation management
• Cooling system and air conditioning/glycol solutions
• Heating & District Heating Solutions & Systems
• Smart Heat meteing
• Thermal energy measurement (heating and conditioning) and water metering (cold and worm)

The threaded ultrasonic BTU meter UBM250I-T is designed for measuring thermal energy of small area where pipe size is not bigger than 40mm , e.g. apartment, villa, shop, etc. The BTU meter comprises of ultrasonic flow sensor and two temperature sensors, base on flow rate and differential temperature of supply / return water to calculate the thermal energy consumption. The product adopts a design of straight-through pipe, features with high measurement accuracy, low pressure drop, anti-blocking, stable operation and long service life. The product can be widely used in central heating/cooling and district heating/cooling systems for thermal energy measurement of residential, commercial and office building.

• High-quality fully enclosed ultrasonic element ensure accuracy and stability of flow measurement
• Using high-quality PT1000 temperature sensors, calibrated and matched to an accuracy better than +/- 0.1 ° C.
• Casing protection class IP68.
• Can be installed horizontally or vertically, and the head is detachable.
• With M-bus / Modbus protocol interface, compatible with BMS for remote reading function. RS485 is optional.
• Detachable battery case for quick replacement.
• Can be mounted on supply or return pipe (specify when ordering);
• Can be used for both heating and chilled water.

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).