Figure 7-8 Heat detector
Table 7-4 Heat detector specications
Item Specications
Operating voltage 24 V DC (9–33 V DC)
Operating current 30–50 μA
Alarm current 52 mA
Output mode Circuit current
Operating temperature –20°C to +60°C
Relative humidity 0%–95% RH (non-condensing)
Dimensions Diameter: 100 mm; height: 50 mm (with a
base)
7.6 (Optional) ASD
The detection unit of the ASD includes the suction pump, lter, high-sensitive
smoke detector, and precision electrical analyzer. The ASD can detect re in the
initial phase and generates alarms at an early time.
The detection unit sucks air samples from the monitored environment through the
air sampling pipes into the detector and works out the dust density in the air. If
the dust density exceeds the preset alarm threshold, the ASD blinks and sends an
alarm signal to the monitoring module.
The ASD consists of the detection unit (ASD-532) and air sampling pipes with
small holes.
FusionDC1000A Prefabricated All-in-One Data
Center
Product Description (IT Scenario) 7 Fire Extinguishing System
Issue 04 (2023-11-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 107
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