เซ็นเซอร์จับความร้อน 281 Rate-of-Rise and Fixed Temperature Heat Detectors
รายละเอียด: เซ็นเซอร์จับความร้อน 281 Rate-of-Rise and Fixed Temperature Heat Detectors
> Low profile with base
> Positive fixed temperature
> On site testing of rate-of-rise
> UL Listed
> FM Approved
> CSFM Listed
> Single circuit normally open
contact rated at 3 amps at 6 to
125V AC; 1.0 amps at 6 to 28V
DC, 0.3 amps at 125V DC, and
.01 amps at 250V DC
> Maximum coverage 2,500 sq. ft.
(232.25 sq. m)
> UL spacing: 50 ft (15.24m)
> FM spacing: 30 ft (9.14m)
> Color - white
The 280B-PL Series heat detectors offer fixed temperature or combination
rate-of-rise and fixed temperature features. The heat detector
is available with a white plastic reversible mounting plate. The
plastic plate can be used for either flush or surface mounting. It includes
a white skirt which covers the space between detector base
and the mounting surface.
*NOTE: Maximum detector coverage has been determined by UL to
provide detection time equal to sprinkler devices spaced at 10 ft
(3.05m) intervals on a smooth ceiling 15 feet 9 inches (4.8m) high.
Higher ceilings may adversely affect detection time. Earlier detection
may be obtained by reducing the spacing between detectors.
(See NFPA 72, Chapter 5)
Detector twists and locks onto mounting plate. Mounting plate may
be surface mounted or mounted onto any 3 1/4" (83mm) or 4"
(102mm) octagon box.