INSTRUCTION MANUAL
ST-P-OM
Photoelectric Smoke Detector
NISM – ST-P-OM
PAGE: 6 of 8
ISSUE No: 2
DATE: 03/10/11
NISM-ST-P-OM-INST MANUAL-001 ISS 2 03/10/11
6/8
Section 7 - SPECIFICATIONS
Model Reference:
-
ST-P-OM
Computer Reference:
-
F02C82220
Detector Type:
-
Photoelectric
smoke detector
Sensitivity
-
3% Obscuration
per metre
Supply Voltage:
-
24V dc nominal
(range 12V to 30V)
Voltage Ripple:
-
20% maximum
Alarm Characteristics: -
6V d.c. between
+(terminal 3) and
- (terminals 1,6)
at 25 deg. C
Monitoring Current:
- 40
m
A max. at 24V d.c.
Alarm Current:
-
Must be externally
limited to 65mA. Max
Charging Time:
-
20 seconds
Ambient Temperature
Range:
-
-10
o
C to +55
o
C
Standard:
-
EN54-7: 2000
EMC Conformance:
-
BS EN50130-4:1996
(Immunity)
BS EN61000-6-3:2001
(Emissions)
Mass:
-
118g (excluding
base)
IP Rating:
-
IP40
Section 8 - ENVIRONMENTAL
PARAMETERS
Temperature Considerations:
Over the range from -10
o
C to +55
o
C.
Humidity:
Relative Humidity of up to 95%, measured at 50
o
C,
non condensing.
Section 9 - EMC
Installation
The installation shall be in accordance with the
regulations either of the approval body for an approved
system, or otherwise, to the national code of practice/
regulations for the installation of the fire alarm system,
e.g. BS 5839 part 1.
Electromagnetic Compatibility (EMC)
In a site where there is an unusually high level of
potential electrical interference, e.g. where heavy
currents are being switched or where high levels of
R.F. are prevalent, care then must be taken in the
type and routing of cables. Particular care should be
given to the separation of zone wiring from the cable
carrying the interference.
