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SIEMENS QLS60 - Solar Impact Sensor
The solar impact sensor is used as a reference sensor in heating, ventilation and air-conditioning facilities where compensation of solar radiation is required or desired. Solar compensation is necessary where buildings or building sections with large window areas are subjected to strong solar radiation. To determine the impact of solar radiation, the sensor uses a solar cell which acquires the level of radiation. That cell generates an electrical current depending on the extent of radiation, which is then evaluated by the sensor. From this evaluation, the sensor delivers an output signal of 4 to 20 mA or 0 to 10 VDC. The signal is proportional to the solar radiation range.
Use:
The solar impact sensor is used as a reference sensor in heating, ventilation and air conditioning plants where compensation of solar radiation is required. Solar compensa tion is necessary where buildings or building sections with large window areas are sub jected to strong solar radiation, especially in plants where thermostatic radiator valves cannot be used.
Equipment combinations
The sensor can be used in connection with all types of systems and devices capable of acquiring and handling the sensor’s 4...20 mA or DC 0...10 V output signal.
Technical Specifications
Connection, electrical
Screw terminals
Dimensions (W x H x D)
2 x 3-5/8 x 1-13/16 in
Time constant
2 s
Operating voltage
24 VAC, 18…30 VDC
Analog outputs
0-10V / 4-20mA (selectable)
Power consumption
2.5 VA
Measuring range
0...1000 W/m2
Analog output, signal
DC 0...10 V, DC 4...20 mA
Commodity Code:90251900