APPLICATION
The Eagle 2000 Digital Communication Unit (DCU)
offers a convenient and economical means of obtain-
ing addressable gas detection. The DCU digitizes a
4 to 20 ma analog signal from a sensor/transmitter
and transmits the value as a process variable to the
Eagle communication gateway. All circuitry is housed
in a single explosion-proof/watertight enclosure for
location at the area of detection.
The DCU is provided in various configurations,
depending on the type of gas to be detected. All
DCUs contain a communication module and a termi-
nal wiring board. DCUs for detecting combustible
gas also contain a transmitter board.
The Eagle DCU is available for use with Det-Tronics’
combustible gas, oxygen and toxic gas sensor/trans-
mitters. The DCU can also be used with a wide vari-
ety of “third party” 4 to 20 ma analog instruments.
FEATURES
• Field addressable
• Unique patented fault isolation
• Utilizes state-of-the-art communication technology
• Pass through communication circuitry on power loss
• Ten bit signal resolution capability
• Two alarm setpoints
• Non-volatile memory for logging of alarm and cali-
bration events
• Non-intrusive one person calibration
• LED for calibration, fault and alarm status annuncia-
tion
• EMI hardened
• Screw terminal connectors.
SPECIFICATIONS
INPUT VOLTAGE—
24 vdc. Operating range is 18 to 32 vdc.
INPUTS—
4 to 20 ma analog signal, with an input impedance of
200 ohms, 10 bit resolution.
OUTPUTS—
Digital communication, transformer isolated (78.5
kbaud). Calibrated 0 to 4095 digital corresponds to 0
to full scale.
POWER CONSUMPTION—
DCU with toxic gas sensor/transmitter:
95 ma maximum.
DCU with transmitter and combustible gas sensor:
180 ma maximum during normal operation, 500 ma
during startup.
TEMPERATURE RANGE—
Operating: –40°F to +167°F (–40°C to +75°C).
Storage: –67°F to +185°F (–55°C to +85°C).
SPECIFICATION DATA
Eagle Quantum
™
Digital Communication Unit
EQ2200DCU
©Detector Electronics Corporation 2001 10/01 90-1118-01
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