Product Overview
22
SharpEye™
UV Flame Detectors User Guide
Ex tb op is IIIC T96°C Db X
(
–
55°C
≤
Ta
≤
+75°C)
Or
1 Ex db eb op is IIC T4 Gb X
Ex tb op is IIIC T106°C Db X
(
–
55°C
≤
Ta
≤
+85°C)
Or
1 Ex db eb mb op is II T4 Gb X
Ex tb op is IIIC T98°C Db X
(
–
55°C
≤
Ta
≤
+75°C)
For more details, see TR CU certificate No. ТC RU C
-
US.МЮ62.В.05536.
2.5
Performance Considerations
This section describes performance aspects of the 40/40U and UB.
2.5.1
Detection Sensitivity
Detection sensitivity is the maximum distance at which the detector reliably
detects a specific size of fire and typical type of fuel (standard fire).
2.5.1.1
Standard Fire
Defined as a 1ft
2
/0.1m
2
n-heptane pan fire, with maximum wind speed of
6.5ft/sec / 2m/sec.
2.5.1.2
Sensitivity Ranges
The detector has 2 response levels:
•
Warning (Pre-alarm)
•
Alarm
The detection distance for the alarm level is 50ft/15m from a standard fire.
The detection distance for the warning level is approximately 10% higher than for
the alarm distance.
For some typical ambient conditions the Zeta parameter as defined in NFPA 72
for the detector is 0.005 (1/m).
Note:
Zeta parameters may vary significantly with changes in temperature,
air pressure, humidity, visibility conditions, etc.
