IK-E317-001GB
3
1 PURPOSE
The DUR-40Ex Universal Smoke Detector is designed for detection of smoke that accompanies the
majority of fires. It enables fire detection at its initial stage when material starts to smoulder what
happens a long time prior to the appearance of open flame and a noticeable temperature rise. It
detects every test fire that is typical for optical detectors and additionally TF1 test fire typical for
ionisation smoke detectors. The DUR-40 smoke detectors are connected to fire detecting lines
through
intrinsically safe barrier or separator of the following parameters: Uo ≤ 25 V, Io ≤ 99 mA
.
The detectors are installed in rooms and zones qualified as 1st and 2nd explosive hazard category
resulting from potential explosion danger of explosive gases or inflammable liquid vapours that are
ranked at IIA, IIB and IIC explosiveness subgroups and T1 up to T6 temperature classes. The detector
is characterised by an increased resistance to wind influence and atmospheric pressure changes. It
provides a high level of visible and nonvisible smoke sensitivity.
2 TECHNICAL SPECIFICATIONS
Operating voltage
12 V ÷28 V
Maximum monitoring mode current
≤ 60 µA
Alarm current
20 mA
Detector sensitivity
0.2 dB/m
Maximum mounting height *)
11 m *)
Maximum supervised area *)
60 ÷ 80 m
2
*)
Operating temperature range
from - 25 °C to + 55 °C
Relative humidity
up to 95 % at 40 °C
Dimensions (without base)
Ø 115 x 43 mm
Mass (without base)
0.15 kg
Casing colour
black
Casing ingress protection
IP 42
Intrinsic safety rating
Ex i
b
IIC T6
*) design guidelines must be observed
3 INSINTRIC SAFETY PARAMETERS
Supply line marginal parameters:
Maximum input voltage
U
I
25 V
Maximum input current
I
I
99 mA
Maximum input power
P
I
0.613 W
Maximum inner capacity
C
I
0*
Maximum inner inductance
L
I
0*
Maximum outer capacity
C
o
110 nF **
Maximum outer inductance
L
O
2.5 mH**
Detector-alarm indicator connecting line parameters:
Maximum output voltage
U
O
25 V***
