Specifications; System Specifications - MSA FL500 Operating Manual

8

Specifications

8.1

System Specifications

Application
Device location
Environmental ratings
UV Detector pass band
IR Detector center wave-
length
Typical alarm activation
response times
Zeta value
Field of view
* Applicable to FM approvals only.
Notes:
Response times and field of view data were derived by testing the device with a 1 ft
cup of heptane on top of a 1-in. layer of water was ignited for each test. These are typical values. The
variation of each fire can cause different results.
BS EN 54-10 identifies the limit of the field of view to ±25 degrees because of the requirements of the
Directional Dependence test. This result is from indoor benchtop testing with a Bunsen burner as the
fire source, rather than the outdoor flame testing used to identify the field of view in Section 3.2.1
"Field of View".
UV/IR Flame
Detection
Class I, Division 1, Groups A*, B, C, and D
Class II, Division 1, Groups E, F, and G
Class III
Ex db IIC T5 Gb
Ex tb IIIC T100°C Db
II 2 G D
-50°C to 85°C under FM, -55°C to 85°C under
CSA/ATEX/IECEx
Type 6P, IP66/IP67
185 - 260 nanometers
4.35 mm
Fuel Distance (ft)
90
n-Heptane
60
Methane 80
Methanol 40
Propane 60
Ethane 60
Butane 55
Zeta = -0.001
The margin of error in the range measurement is esti-
mated at ±5 ft (±1.5 m) due to wind conditions and flame
turbulence.
Refer to Section 3.2.1 "Field of View" for information.
FL500 UV/IR Flame Detector
Specifications
Response Time
(s)
6
<3
<10
12
<7
<3
<3
2
heptane fire. One
US
36