Elf 2 (DN15–20)

Compact heat meters

A high-quality compact heat and cooling meter with a Class 2 turbine flow transducer
Can operate as a heat meter, a cooling meter or a combined heat and cooling meter within the same system
Based on single-jet flow transducers for horizontal (Class 2) or vertical (Class 3) installation

Find out what the Elf 2 heat meter has to offer

The Elf 2 is a high-quality, compact heat and cooling meter equipped with a single-jet turbine flow transducer. The device can operate as a heat meter, a cooling meter, or a combined heat and cooling meter within the same installation, ensuring a high degree of application versatility. Thanks to its ability to be installed horizontally or vertically, as well as its dynamic temperature measurement and integration capabilities, the Elf 2 is ideal for use in residential heat distribution units (logotherms). Extensive communication options – both wired and wireless – enable the meter to be integrated with building automation systems and remote reading systems. By using the Elf 2 heat meter, you gain:

The ability to measure heat, cooling, or both heat and cooling simultaneously within a single system

Precise and reliable consumption billing thanks to high measurement accuracy and stable metrological parameters

Accurate energy calculation even with short-term flow rates thanks to a dynamic temperature measurement and integration period (2–6 s)

Flexible installation options, thanks to the ability to install the unit horizontally or vertically and its rotatable display

Ideal for metering applications thanks to the available nominal flow rates of 0.6, 1.0, 1.5 and 2.5 m³/h and pipe diameters of DN15 and DN20

Long, maintenance-free operation thanks to a battery power supply that offers a service life of up to 6 or 12 years

Easy integration with meter reading systems and building automation systems thanks to replaceable communication modules (M-Bus, Modbus, Wireless M-Bus, pulse outputs)

The ability to connect up to four additional devices with a pulse output (e.g. water meters or electricity meters) to the meter

Secure data storage and comprehensive analyses of system performance thanks to extensive data archiving in non-volatile memory (minute-by-minute records (15–1,440 min), hourly, daily, monthly and annual records)

The ability to customise the meter’s configuration to suit individual needs using the dedicated Elf 2 Service software

Type	_Q3 [^m³/h]	DN [mm]	Length [mm]	Thread	Weight [kg]
Elf 2	0.6	15	110	G¾	0.58
	1	15	110	¾	0.58
	1.5	15	110	G¾	0.58
	1.5	20	130	G1	0.58
	2.5	20	130	G1	0.58

Replaceable communication modules
M-Bus with 4 pulse inputs
M-Bus with 2 pulse inputs and 1 pulse output
RS485 with Modbus protocol implemented
Wireless M-Bus OMS with 2 pulse inputs
Service (configuration) - USB

Looking for alternatives?
Discover other products in our range

INVONIC 2, INVONIC 2M (DN15–100)

Hybrid heat meters

Please note: This product has been discontinued!

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FAUN

Split heat meters/energy calculators

A top-of-the-range heat meter converter for professional applications, offering the widest range of measurement, data archiving and communication capabilities
It is compatible with ultrasonic and mechanical flow transducers, as well as paired temperature sensors, which are separate measuring devices forming part of split heat meters (including those from other manufacturers on the market)
A version is available with a fixed pulse rate and the installation points (power supply/return) shown on the LCD display

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