Dahua Technology DH-IPC-HDEW Series Quick Start Manual page 10

Suitable for area 1&2 with explosive gas (IIA, IIB, IIC), and area 21 & 22 with explosive dust (IIIA, IIIB,
IIIC).
Do not open the camera when power is on or under the environment with explosive gas.
1.4 Mechanical Structure
1.4.1 Mechanical Specification
Parameter
Material
IP rating
Cable outlet hole
Cable outlet hole thread
1.4.2 Explosion-proof Structure
The enclosure design of the Camera guarantees that no external explosion, caused by internal
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operation when explosive gas mixture gets inside, can happen. Several factors have been
considered to guarantee the explosion-proof performance, such as enclosure intensity, junction
surface gap and length among components, and maximum surface temperature of the
enclosure.
After the welding and finish machining, the enclosure can sustain the severe hydrostatic test.
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With 10 s –20 s 2 Mpa test pressure, there is no water dripping and deformation.
When the Camera is working normally, the maximum surface temperature of the enclosure is no
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more than:
80°C; under the environment with T6 explosive gas and ambient temperature: –40°C to
+55°C;
100°C; under the environment with T5 explosive gas and ambient temperature: -40°C to
+60°C;
Figure 1-3 Explosion proof sign information (2)
Table 1-1 Mechanical specification
Description
316L stainless steel by default; stainless steel 304 customizable
IP68
1
G 3/4 thread (for external connection)
3
Quick Start Guide