Ultrasonic Heat Meter
User Guide
Heat Energy Measurement
HEAT METER functions as follow:
Flow Sensor: registers the amount of district heating water in m³/h circulating
through the heating system.
Temperature Sensors: placed in forward and return pipes sense the cooling,
by the difference between in flow and out flow temperatures.
Calculator: calculates heat energy consumption based on flow volume and
temperature loss of heating water.
Permissible operating conditions / measuring ranges
Calculator Θ: 3°C~95°C △Θ: 4K~65K
Temperature sensor pair Θ: 0°C~105°C △Θ: 3K~105K
Flow sensor (heat meter) Θ: 3°C~95°C
Electromagnetic environment
E1 (housing/light industry). The meter’s control cables must be drawn at min.
25 cm distance to other installations.
Mechanical environment
M1 (fixed installation with minimum vibration).
Climatic environment
The meter must be installed in environments with non-condensing humidity as
well as in closed locations (indoors). The ambient temperature must be within
5~55°C.
Maintenance and repair
The district heating supplier can replace temperature sensor and battery. The
flow sensor must not be separated from the calculator.
HEAT METER must be connected to a temperature sensor pair type Pt1000.
Battery for replacement
HEAT METER can be fitted ER34615 battery with operating time of 10 years
at 1 read per day. Lock out feature enabled if excessive reads occur to protect
battery life. If reads are not available please remove battery from meter for 2
minutes to allow manual reset.
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