User manual

Model: EC-GOLD Dual
ECGOLDDUALUM12.doc Rev: 1.2
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1.3 Specifications
OPERATION
The EC-Gold Dual is a multi-sensor gas detector. A variety of
gases may be sensed when fitted with the appropriate sensors.
PUSH-TEST FEATURE On demand using the Push to Test pushbutton.
LCD DISPLAY/KEYPAD 2 x 8 LCD display showing ppm concentrations and calibration
menus
USER INTERFACE
Calibration and setup Keypad, LCD, pushbutton, and LED status lights.
Push-Test Pushbutton.
Network RS-485 modbus protocol. Used either with the ARJAY/ENMET
CAP unit or via third party, modbus compatible systems.
INPUTS
Port 1 (EC1): on board CO (Carbon Monoxide) Electrochemical
Port 2 (EC2): on board electrochemical for NO2 (Nitrogen Dioxide), CL2
(Chlorine), H2S (Hydrogen Sulfide), NH3 (Ammonia) and others.
Port 3: integral or remote MOS broad range toxic/combustibles and
catalytic combustibles
Port 4: remote 4-20 mA input transmitters
OUTPUTS
mA output When configured for Analog output: 4-20mA into 700 ohms max.
DC Voltage output When configured for Voltage output: 2-10V proportional to
calibrated range.
mA / Voltage output 0.1% resolution – non-isolated.
RLU DV output When configured for RLU Discrete Voltage Output mode:
0V = No Alarm, 1.8V = Low Alarm, 2.8V = High Alarm, 10V =
Sensor Fault. (Sensor Fault only detected with CO sensor).
Alarms 3 alarms (High/High, High, Low) and Optional System Fault May be
factory selected
Alarm Indication High (Red), Low (Yellow), and a 2 color LED for Sensor Fault (Red)
and No Alarms (Green). The 2 color LED is also used to flash
calibration errors (Red for ~2 seconds after an unsuccessful
calibration).
PERFORMANCE Accuracy ±2% of Full Scale Range (the accuracy is limited by
the sensors – the electronic accuracy is better than 1%.
POWER
12VDC - 24VDC @ 200mA max OR 24VAC INPUT (See JP1
Jumper in Fig 2.1)
Require extra current if use external transmitter
MECHANICAL SPECIFICATIONS
Enclosure Nema 1 wall mount
Dimensions 9.61” [244mm] H x 6.25” [159mm] W x 2” [50mm] D
Weight 0.3 kg
ENVIRONMENTAL SPECIFICATIONS
Operating Temp. -20°C to +55°C
Relative Humidity 90% max. with no condensation.