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Instruction for Use | HCA 56x and 8x8
3. Product Description
3.1 Packaging
Scoop of delivery:
3.2 Type
The electronic heat cost allocators Sontex 565 / 566 / 868 / 878 operate either according to the
single sensor principle with start sensor or the double sensor principle. The device has been
developed and approved in accordance with the European Standard EN 834:2013.
3.3 Design
The heat cost allocator consists of a microprocessor, a lithium battery, two temperature sensors,
a heat conducting aluminium back plate, a multi-functional display and a plastic housing.
The measuring circuit consists of the temperature sensors, the analogue-digital conversion, the
reference resistance for standardising the measuring transformation and the microprocessor for
accessing the radiator heat output. During each measuring the circuit tolerances are eliminated
with a reference resistance and the heat cost allocator carries out an automatic self-test.
25.7
28.4
38
92.9
3.4 Dimension and Description
LCD Display
Optical interface
Push button
Seal
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