2
CERTIFICATION—
FM: Class I, Div. 1, Groups B, C and D.
Class II, Div. 1, Groups E, F, and G.
Class I, Div. 2, Groups A, B, C, and D (T4A).
Class II, Div. 2, Groups F and G (T4A).
Class III, Div. 1 and 2.
NEMA Type 4X
CSA: Class I, Div. 1, Groups B, C and D.
Class II, Div. 1, Groups E, F, and G.
Class I, Div. 2, Groups A, B, C, and D (T4A).
Class II, Div. 2, Groups F and G (T4A).
Class III, Div. 1 and 2.
Enclosure Type 4X.
CENELEC: EEx d IIC T4 (Tamb = –60°C to +75°C)
EEx d IIC T5 (Tamb = –60°C to +65°C)
EEx d IIC T6 (Tamb = –60°C to +50°C)
IP66.
CE: Conforms to all relevant European norms.
SHIPPING WEIGHT—
Aluminum: 6 lb (2.7 kg)
Stainless Steel: 10 lb (4.5 kg).
DIMENSIONS—
See Figure 1.
DESCRIPTION
The DCU consists of an explosion-proof, NEMA 4X
aluminum enclosure containing a communication
module, a terminal wiring board, and a transmitter
board (catalytic combustible gas models only). The
DCU serves as a single point analog input to the
Eagle Quantum system and is compatible with most 4
to 20 ma instruments. It provides three status indicat-
ing LEDs that are visible through a viewing window on
the enclosure cover, and supports single person non-
intrusive calibration with a Det-Tronics gas sensor.
DETECTOR ENCLOSURE
The NEMA 4X explosion-proof aluminum enclosure is
designed for use in hazardous locations. The remov-
able cover is furnished with a window for viewing the
status indicator LEDs.
STATUS LEDS
Three LEDs are provided for indicating detector sta-
tus conditions. The LEDs are located on the commu-
nication module and are visible through the viewing
window on the enclosure. The green LED serves as a
power-on indicator. The flashing rate of the red LED
indicates detector status (calibrate = slow, fault =
fast, alarm = steady). The amber LED is provided for
factory diagnostic purposes.
EVENT LOGGING
The DCU stores its last eight alarms and calibrations
with date and time stamp in on-board non-volatile
memory using a “First In First Out” (FIFO) format. This
information can then be accessed over the network.
To Next Page
Loading...