Dynasonics UHC-120 Thermal Energy Meter

Overview

The Dynasonics UHC-120 is a hybrid ultrasonic thermal energy meter engineered by Dynasonics, a Badger Meter brand, for BTU and energy metering in heating, ventilation, and air conditioning (HVAC) systems using water or glycol as the heat transfer medium. Covering pipe sizes from 12.7 to 38.1 mm (½ to 1½ inch, NPT or G3/4 to G2 threaded connections), the UHC-120 combines an ultrasonic flow sensor with matched temperature sensor pairs to calculate thermal energy consumption directly, making it suitable for chilled water and hot water submetering in commercial buildings. This makes it the natural choice for property managers and energy service companies that need to allocate heating and cooling costs accurately across tenants or building zones.

With engineering support in Muscat, Seven Star LLC supplies the UHC-120 thermal energy meter to building services contractors, energy service companies, and facilities management teams across Oman and the wider GCC. Seven Star LLC supplies the UHC-120 on request with the manufacturer datasheet and technical support with selection, so HVAC and energy engineers from Muscat to Sohar can specify the UHC-120 with confidence.

Measurement Principle

The Dynasonics UHC-120 combines ultrasonic transit-time flow measurement with a matched pair of high-accuracy temperature sensors installed in the supply and return lines of a hydronic heating or cooling loop. The ultrasonic flow sensor measures the volumetric flow rate of the water or glycol circulating through the system, while the temperature sensor pair continuously measures the temperature difference between supply and return. The UHC-120 integrated calculator then combines flow rate and temperature differential using the fluid known specific heat to compute thermal energy consumption in real time, displaying and totalizing the result directly on the meter.

Because the measurement combines flow and temperature differential rather than flow alone, the Dynasonics UHC-120 gives an accurate picture of actual energy delivered or removed, not just water volume circulated, which is what building owners and tenants are ultimately billed for. The meter meets Class 2 accuracy requirements under the MID and EN1434 standards that govern legal thermal energy metering in commercial and multi-tenant buildings. For facilities management teams, this level of certified accuracy is what allows the Dynasonics UHC-120 to be used for contractual energy billing rather than only for internal monitoring.

Engineering Design of the Dynasonics UHC-120

The Dynasonics UHC-120 integrates the ultrasonic flow body, the calculator electronics, and the display into a single compact unit sized for 12.7 to 38.1 mm hydronic piping, with a pair of remote temperature sensor probes wired to matched supply and return tapping points. The calculator display shows instantaneous flow rate, supply and return temperatures, temperature differential, and totalized thermal energy consumption, giving facilities technicians a complete operational picture at the meter without additional instrumentation. Power is available as battery, 24V AC, or 230V AC depending on the installation electrical infrastructure, giving building services contractors flexibility when retrofitting existing plant rooms or specifying new mechanical systems.

Because the UHC-120 has no impeller or mechanical measuring element in the flow path, it avoids the wear, fouling, and periodic recalibration that mechanical BTU meters require, particularly in systems where water treatment chemicals or minor debris are present. Installation follows standard threaded connection practice for the flow body, with the temperature sensor pair inserted into thermowells or direct-immersion fittings at the supply and return points specified by the system designer. This combination of solid-state flow sensing and precision-matched temperature sensors is what allows the Dynasonics UHC-120 to hold its certified accuracy over long commercial billing cycles.

Key Features

The Dynasonics UHC-120 thermal energy meter is purpose-built for certified BTU and energy submetering in HVAC systems, and its key capabilities include the following.

• It is sized for 12.7 to 38.1 mm (½ to 1½ inch) pipe connections with NPT or G3/4 to G2 threaded fittings.
• It measures thermal energy consumption directly by combining ultrasonic flow measurement with a matched temperature sensor pair.
• It measures liquid flow across a range of 1.5 to 20 m³/h, suited to typical commercial HVAC zone and riser metering.
• It operates across a liquid temperature range of 5°C to 90°C, covering both chilled water and hot water heating loops.
• It is rated for system pressures up to 16 bar, matching standard commercial hydronic piping design pressures.
• It achieves Class 2 accuracy under the MID and EN1434 standards, suitable for certified energy billing applications.
• It supports battery, 24V AC, or 230V AC power options, giving flexibility for new installations and plant room retrofits.
• It has no impeller or mechanical measuring element, eliminating wear and fouling in the flow measurement path.

Industrial Applications

The Dynasonics UHC-120 is specified across Oman and the GCC in commercial and mixed-use buildings where district cooling, chilled water, or hot water heating systems must be submetered for accurate tenant billing. In Muscat commercial towers and mixed-use developments, the Dynasonics UHC-120 is installed on tenant riser connections to district cooling and central plant systems, giving facilities management companies certified, billable thermal energy data rather than relying on estimated allocation. In the Sohar and Salalah industrial and hospitality zones, the UHC-120 is used in hotel and staff accommodation HVAC systems where energy cost allocation between blocks or wings is a contractual requirement of the facilities management agreement.

Seven Star LLC distributes the UHC-120 to building services contractors, energy service companies, and facilities management teams throughout the Sultanate of Oman and the broader GCC, backed by manufacturer documentation and technical support. HVAC and energy teams in Muscat, Sohar, and Salalah rely on Seven Star LLC not only for the instrument itself but for guidance on sensor pair placement, commissioning support, and access to genuine Badger Meter documentation, all of which are only reliably available through a trusted regional supply channel.

Technical Specifications

The table below summarizes the key technical specifications of the Dynasonics UHC-120 thermal energy meter.

Request a Quote for Dynasonics UHC-120 Thermal Energy Meter

Seven Star LLC is ready to support your HVAC energy metering project with the Dynasonics UHC-120 thermal energy meter, from formal RFQ submission through commissioning. Working closely with plant engineers in the region, we supply on request with lead time confirmed at quotation, provide full technical datasheets on request, and connect your facilities management or energy services team directly with our instrumentation division for sensor sizing and commissioning guidance.

Browse the full Dynasonics range or see more Flowmeters products supplied by Seven Star LLC in Oman and the GCC.