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Ultrasonic heat meter 1.5 m3/h, Ø5.2x45 mm, G 3/4", battery life 6 years

Stock no. LYU:WSM515-0A

Stock no. LYU:WSM515-0A

The WSM5.. heat meters and WSB5.. cooling energy meters acquire the volume flow statically based on the ultrasonic measuring principle. They are available as wall-mounting versions in different sizes. The meters excel in great measuring accuracy, a volume measuring section made of high-tech plastic, and wear resistance.

The consumption values acquired by the meter can be read out either on the meter itself or from a remote location. The meter transmits the current consumption value, the monthly values, the set day value and error messages to the respective data collector.

The processor can be removed (cable length 1.5 m). The display informs the user about the amount of energy consumed.

The WSM5.. and WSB5.. are used in residential or commercial buildings to acquire the amount of heat or cooling energy consumed.


The meters are supplied with Operating and Mounting Instructions in the following languages:

Bulgarian, Chinese, Croatian, Czech, Dutch, English, French, German, Greek, Hungarian, Italian, Norwegian, Polish, Russian, Slovakian, Slovenian, Spanish, and Turkish



Due Date


Voltage supply

Lithium battery

Battery life

6 Years

PN class

PN 16

Nominal flow rate

1.5 m³/h

Mounting length

110 mm

Sensing element, temperature


Measurement accuracy

MID class 2


PL Ø5.2x45 mm

Cable length, sensor

1.5 m





Temperature range electronic unit

0…180 °C

Temperature range volume measuring section

5…90 °C


EN 1434

Connecting thread

G ¾ "

Mounting location

Meter: return, Sensor in the flow: selectable, directly/indirectly immersed, Sensor in the return: integrated in the return, directly immersed

Packaging unit

1 pce