Heat and cold meter - with electronic IrDa output - 2,5m3/h; 1"; 130mm IVAR.WFM 50

Product detailed description

This heat and cold meter is commonly used in residential and commercial buildings for accurate thermal energy measurement in heating and cooling systems. It is typically installed in return lines of central heating systems, where it continuously monitors and records energy consumption. The compact design and 1 inch connection make it suitable for integration into a variety of system layouts, including those with limited space. The device is ideal for installers working on boiler systems, apartment heating units, and other thermal energy measurement applications.

The meter is designed to operate in environments where accurate and reliable energy data is required for billing, monitoring, or system optimisation. It is particularly useful in systems where remote meter reading is needed, as it supports integration with M-Bus and AMR modules for remote data collection. The long battery life ensures minimal maintenance over the device's operational lifespan.

Technical parameters

Installation and connection

Installation should be carried out in the return pipe of the system, following the manufacturer's guidelines for positioning and orientation. The 1 inch connection requires appropriate fittings and sealing to ensure a leak-free installation. It is important to verify the correct alignment of the meter with the flow direction to ensure accurate readings. Common installation errors include incorrect orientation, insufficient straight pipe runs upstream and downstream, and failure to secure the meter properly. These issues can lead to inaccurate measurements and reduced system performance.

Compatibility and accessories

This meter is compatible with the IVAR.WFZ 51 M-Bus module for remote meter reading via a wired connection. For wireless data transmission, the IVAR.WFZ 662 AMR module with an integrated antenna can be used. These accessories need to be ordered separately and are essential for systems requiring remote monitoring and data collection. The meter is also compatible with standard heating and cooling systems that use water as the heat transfer medium.

Technical background for designers

The meter operates by measuring the flow rate and temperature difference between the supply and return lines to calculate thermal energy consumption. The electronic IrDa output allows for non-contact data transfer, which is useful in systems where physical access to the meter is limited. The housing is constructed from durable materials suitable for long-term operation in wet and humid environments. The battery life of 10 years ensures that the meter remains operational without frequent replacements, reducing the need for service interventions. The design allows for integration into existing systems without major modifications, making it a versatile solution for a range of thermal energy measurement applications.

Service and operation

Maintenance requirements are minimal due to the long battery life and robust construction. The main service task involves checking the integrity of the connections and ensuring that the meter is correctly positioned in the flow path. No scheduled service intervals are specified in the technical data, and the device is designed for long-term operation with minimal intervention. In the event of a malfunction, the meter should be inspected for signs of physical damage, incorrect installation, or interference from external sources.

Frequently asked questions

Can the meter be used with wireless remote reading systems?
Yes, the meter supports wireless remote reading via the IVAR.WFZ 662 AMR module with an integrated antenna.

Is the meter suitable for installation in a return pipe?
Yes, the meter is specifically designed for installation in the return pipe of heating and cooling systems.

What is the battery life of the meter?
The meter has a battery life of 10 years under normal operating conditions.

Can the meter be integrated with a M-Bus system?
Yes, the IVAR.WFZ 51 M-Bus module can be used for wired remote reading and integration into M-Bus systems.