Siemens QLS60 Solar Impact Sensor,
The outdoor wall-mounted Solar Impact Sensor (QLS60)
use as a demand sensor for heating, ventilation and
air-conditioning in facilities where compensation of solar
radiation is require or desire. Solar compensation is
necessary where buildings or building sections with large
window areas subjecte to strong solar radiation,
especially in installations where thermostatic radiator
valves cannot use.
To determine the impact of solar radiation, the sensor
uses a solar cell that acquires the level of radiation.
That cell generates an electrical current depending on the
extent of radiation, which is then evaluate by the sensor.
As a result, the sensor delivers an output signal of 4 to
20 mA or 0 to 10 Vdc, which is proportional to the solar
radiation range.
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