Landis+Gyr - UH50 (T550) Ultraheat Heat Energy Meters
The Landis+Gyr ULTRAHEAT T550 (UH50) is a high-performance ultrasonic thermal energy meter designed for an exceptionally wide range of heating and cooling applications. Available from 1/2" BSP (DN15) through to DN300 flanged, with nominal flow rates from qp 1.5 to 600 m³/h, the range covers everything from residential heat metering through to major commercial, district heating and district cooling installations.
Landis+Gyr ULTRAHEAT T550 (UH50) Ultrasonic Energy Meter
Modular ultrasonic thermal energy metering for heating, cooling and combined heat/cooling applications across an exceptionally broad range of pipe sizes and flow rates.
The Landis+Gyr ULTRAHEAT T550 (UH50) is designed for applications ranging from individual residential properties and apartment buildings through to large commercial users, district-heating networks and district-cooling systems.
Its modular design and flexible software configuration allow the meter to be adapted to a wide variety of thermal energy-metering requirements, making the T550 particularly useful where a common meter platform is required across multiple pipe sizes, flow rates and communication systems.
The T550 can be configured for heat, cooling or combined heat and cooling measurement, allowing it to support both conventional heating networks and modern building-services systems requiring bidirectional thermal energy measurement.
ULTRAHEAT T550 (UH50) at a Glance
- Measurement technology: Ultrasonic
- Applications: Heating, cooling or combined heat/cooling measurement
- Sizes: 1/2" BSP (DN15) to DN300 flanged
- Nominal flow range: qp 1.5 to 600 m³/h
- Approval: MID Class 2 to EN 1434
- Construction: Robust full-metal flow sensor design
- Measuring principle: No moving mechanical measuring parts
- Installation: No straight pipe sections required
- Communication: Modular communication architecture
- Communication slots: Two serial module positions for parallel communications
- Local interface: Optical interface for local meter reading and configuration
- Typical use: Residential, commercial, industrial, district heating and district cooling
DN15 to DN300 Meter Range
One of the major advantages of the T550 is the exceptional breadth of the range. Meter sizes extend from compact DN15 threaded models through to DN300 flanged meters, with nominal flow rates spanning qp 1.5 to 600 m³/h.
This allows the same meter family to be specified for individual apartments, commercial buildings, large plant rooms, district-energy networks and major thermal energy users.
Correct meter selection should be based primarily on the expected operating flow rate as well as the nominal pipe size. Stockshed Metering can assist with sizing and selection where the system flow conditions are known.
High-Precision Ultrasonic Measurement
Flow measurement within the T550 is performed using ultrasonic technology rather than a conventional mechanical turbine or impeller.
With no moving mechanical measuring parts in the flow channel, the meter is designed for long-term measurement stability and reduced mechanical wear across demanding heating and cooling applications.
Robust Full-Metal Construction
The T550 uses a robust full-metal flow sensor design, making it particularly suitable for commercial, industrial and district-energy applications where durability and long-term reliability are important.
The flow sensor does not require straight lengths of pipe around the meter, which can reduce installation space and simplify replacement or retrofit applications.
DuraSurface™ Measuring Stability
Selected T550 volume-measuring units incorporate Landis+Gyr's DuraSurface™ internal profile, developed to improve measuring stability and resistance to deposits within the flow sensor.
This helps maintain consistent measurement performance over time and reduces the effect that contamination within the system can have on long-term meter operation.
Intelligent Monitoring & Diagnostic Functions
The T550 provides more than simply an accumulated energy reading. Integrated diagnostic functions can help identify operating conditions that may indicate problems within the metering system.
The meter can record and signal selected system conditions, while tamper detection on the temperature sensors helps provide additional confidence in the integrity of the measurement system.
An undeletable logbook together with stored monthly values allows historical consumption and measurement information to be reviewed, helping make meter performance and consumption data easier to analyse and verify.
Modular Communication Options
A major strength of the T550 is its modular communication architecture. A wide range of communication modules allows the meter to be adapted to different automatic meter-reading, building-management and energy-monitoring systems.
Two serial communication slots allow parallel communication methods to be used where required, providing significant flexibility on larger or more complex installations.
A standard optical interface also allows local meter reading, configuration and integration using compatible handheld equipment.
Heating, Cooling & Combined Energy Measurement
The T550 platform can be configured for heat-only, cooling-only or combined heating and cooling measurement, depending on the requirements of the installation.
This versatility makes the range suitable for conventional heating networks as well as modern district-energy, heat-pump and building-services systems where both heating and cooling energy may need to be recorded.
Typical Applications
- Residential heat metering
- Apartment and communal energy metering
- Commercial buildings
- Large plant rooms
- Industrial thermal energy measurement
- District-heating networks
- District-cooling networks
- Combined heating and cooling systems
- Renewable-energy and heat-pump installations
- Building-management systems
- Automatic meter-reading networks
- Large special-tariff and higher-flow applications
Why Choose the ULTRAHEAT T550 (UH50)?
The T550 is particularly well suited where an extremely broad and configurable ultrasonic energy-meter platform is required. Its DN15 to DN300 size range, qp 1.5 to 600 m³/h flow capacity, robust full-metal construction, modular communications and heating/cooling capability allow the same meter family to cover applications ranging from individual properties through to major district-energy installations.
Need Help Selecting the Correct T550 (UH50)?
With such a broad range of sizes, flow rates and communication configurations, selecting the correct T550 should be based on the actual requirements of the system rather than pipe size alone.
Contact Stockshed Metering with your pipe size, expected flow rate, heating or cooling application and communication requirements and we can help identify the most suitable Landis+Gyr T550 configuration for your installation.
