- 價格：1000
- 量程：24VAC50–60Hz
- 輸出：4-20mA
- 工作壓力：0.6sec.max.
- 外殼：防塵、防濺(IP54)
4-Wire Photoelectric Duct
Smoke Detector-D4240
The InnovairFlex? Series are the only duct smoke
detectors flexible enough to fit configurations from
square to rectangular and everything in between
Features
? Photoelectric, integrated low-flow technology
? Air velocity rating from 100 ft/min to 4,000 ft/min (0.5 m/s to 20.32
m/sec)
? Versatile mounting options: square or rectangular configuration
? Plug-in sensor offers superb false alarm immunity and the latest
sensor technology
? Broad ranges for operating temperature (–4°F to 158°F) and
humidity (0% to 95% non-condensing)
? Patented sampling tube installs from the front or back of the
detector with no tools required
? Increased wiring space with a newly added ?-inch conduit
knockout
? One easy-access Test/Reset button and improved LED status
? Patented interconnect feature for multi-fan shutdown
? New high-contrast terminal designations
? Built-in short-circuit protection from operator wiring errors
? Field-selectable settings for configuring the detector
? Two DPDT Form-C relay contacts
? 24 VAC/DC or 240 VAC
? Backward compatibility with existing Innovair products, including
remote accessories
The InnovairFlex D4240 4-wire photoelectric duct smoke
detector features a pivoting housing that fits both square and
rectangular footprints and mounts to round or rectangular
ductwork. This unit operates in airflow speeds of 100 to 4,000 feet
per minute, temperatures of –4°F to 158°F, and a humidity range
of 0 to 95 percent (non-condensing). A plug-in sensor head offers
improved false alarm immunity and simple installation, testing, and
maintenance. An improved cover design isolates the sensor head
from the low-flow feature for simple maintenance.
The InnovairFlex housing provides ample wiring space, a ?-inch
conduit knockout, and built-in short-circuit protection to prevent
damage to sensitive components during installation. High-contrast
terminal designations make wiring easy. With its 2:1 sensor-to-power
capability, the power board of the D4240 may be used to monitor
a second sensor, D4S, simultaneously (i.e., supply and return side).
As many as 50 InnovairFlex detectors can be interconnected. When
one unit senses smoke, all interconnected detectors will switch their
relays; only the detector sensing smoke will go into alarm, enabling
the fire location to be pinpointed.
An easy-access Test/Reset button makes it possible to test the unit
with the cover on. Three DIP switches can be used to configure
field-selectable settings: cover tamper delay, number of sensors to
be controlled, and shut down on trouble option. Each power board
has two LEDs that can be used to indicate the status of connected
sensors, and a quick reference imprinted on the cover explains the
LED status indications (Standby, Maintenance, Trouble, and Alarm).
The InnovairFlex duct smoke detector can be customized to meet
local codes and specifications without additional wiring. The new
InnovairFlex product line is compatible with all previous Innovair
models, including remote test accessories.
WARNING: Duct smoke detectors are NOT a substitute for open
area smoke detectors; NOT a substitute for early warning detection;
NOT a replacement for a building’s regular fire detection system.
S911 3029700 Refer to NFPA 72 and 90A for additional information.
