Hochiki IFD-E(IS) - Manual (Page 5)

Hochiki Europe (UK) Ltd 5
2-3-0-809/ISS2/JUL07
Intrinsically Safe Product
Technical Data
Mechanical
Housing Material:
See Fig 1 Die Cast Zinc Alloy
Housing Colour: Blue (typical)
Housing
Dimension:
(Excluding Mount) Height = 142mm
Width = 108mm
Depth = 82mm
Cable Gland
Entries:
2 X 20mm
Electrical
Supply In:
Voltage
Current
Polarity sensitive
Terminals 1(+) & 2(-)
14 to 30Vdc
2 to 30mA See datasheet for detail
Fig. 1
Intrinsically Safe Flame Detector
(Alloy Housing)
Optional Input:
Voltage
Current
Polarity sensitive Terminals 3(+) & 4(-)
14 to 30Vdc
40µA typ. @ 24V IN
Optional Output:
Voltage
Current Terminals 3(+) & 4(-)
0V to Supply In (O/C)
2.4mA typ. Internally Limited
Optional Relays
Contact Ratings:
Voltage
Current
Resistive Loads Only Terminals 3 to 8
30Vdc. Max.
1 Amp. Max.
Environmental
Operating Ambient
Temperature:
Check detector
limits
-20°C to +40°C(T4)
-20°C to +85°C(T3)
ATEX
Approval Category
II 1 G
CENELEC / IEC
Marking
EEx ia IIC T4
The flame detectors respond to light
emitted from flames during combustion.
The detectors discriminate between flames
and other light sources by responding only
to low frequency flickering produced by
flames (typically 1 to 15Hz). The detectors
ignore fixed light sources and rapidly
flickering illumination predominantly
produced by lighting.
The flame flicker techniques have the
advantage of still allowing the detection of
flames through a thin layer of oil, water
vapour, ice or dust. This makes these
detectors particularly useful in industrial
applications.
Full details of the principles of operation,
electrical description, and other detailed
technical data are published in the products
individual data sheet.
Apparatus
Certificate Number
BAS02ATEX1001