DCC Dual Channel Controller

2 channel versatile self-contained Controller with VFD capabilities and flexible internal and/or remote sensor 
configurations

Features two 4-20 mA outputs and one configurable 4-20 mA input; for monitoring: Carbon monoxide, Nitrogen 
dioxide, Nitric oxide, Oxygen, Hydrogen sulphide, Ethylene, Sulphur dioxide, Hydrogen, Methane, Propane, TVOCs

Key Features

• Single or dual channel operation
• Flexible internal and/or remote sensor configurations
• 2 line by 16 character LCD display with LED indicators
• Two dry contact relays, 5-amps @240 volts each
• Two 4-20 mA outputs, can be use for VFD control
• One configurable 4-20 mA input
• Line Voltage (90-240 VAC) or Low Voltage (24 VAC/VDC)
• Door mounted audible alarm, optional water tight version or extra loud version available
• Standard water / dust tight, corrosion resistant enclosure (drip proof); IP54 rated with water tight, door
  mounted audible alarm installed

The DCC Dual Channel Controller is a comprehensive and dependable, self-contained system that offers one or two 
channel configurations for monitoring toxic and combustible gases and PID TVOCs with straight-forward control 
functionality for non-hazardous, non-explosion rated, commercial and light industrial applications. Sensor 
configurations include, two internal electrochemical sensors (one must be CO), or one internal electrochemical and 
one remote catalytic or PID sensor or a remote 4-20 mA transmitter.

Field configurable settings are done through an easy to navigate, comprehensive menu structure. Other features 
include two 4 - 20 mA outputs that can be used for VFD control, one configurable 4 - 20 mA input, two alarm level 
line voltage, two SPDT dry contact relays with field configurable time delays and trigger levels, a field selectable 
integral audible alarm and an LCD display with LED indicators for channel alarm status and fault conditions.

Automated calibration and other maintenance procedures are simple and easily performed in the field. For parking 
garage applications, our proprietary Calibration Extending Firmware (CEF) takes into account the aging of the toxic 
gas sensors so that less frequent calibrations are required.

The DCC is the big brother to the SCC and offers more features and gas sensor choices.

Target Gas

Gas Sensors				Carbon Monoxide (CO), Nitrogen Dioxide (NO2), Nitric Oxide (NO), Oxygen (O2), 
                                        Hydrogen Sulphide (H2S), Ethylene (C2H4), Sulphur Dioxide (SO2), Hydrogen (H2), 
                                        Methane (CH4), Propane (C3H8), TVOCs

Mechanical

Enclosure				ABS / Polycarbonate, corrosion resistant 
					Copper coated interior to reduce RF interference 
					IP54 rated with optional splash guard installed

Weight				1.18 kg / 2.6 lbs

Size					254 x 226 x 113 mm / 10.0 x 8.9 x 4.44 inches

User Interface

Display				2x16 character LCD display
					LED indicators for “CH1" state, "CH2" state and “FAULT”

Input/Output

SILENCE Push Button		Temporarily clears buzzer / latched relays

Input					4-20 mA analog

Output				4-20 mA analog

Relay					Two internal SPDT dry contact relays rated 5 amps @ 240 VAC

Audible Alarm			Standard internal buzzer, rated 76 dB @ 3 m (10 ft) 
					Optional: door mounted, water tight buzzer, rated 85 dB @ 60.96 cm (2 ft) 
					Optional: loud, door mounted buzzer, rated 90 dB @ 30 cm (1 ft)

Electrical

Power Requirement		Low Voltage: 16-30 VDC or 12-30 VAC, 10 W Class 2 
					Line Voltage: 90 – 240 VAC, 50 -60 Hz

Wiring				Low Voltage: 24 VDC or 24 VAC 2-conductor shielded minimum 18 AWG stranded 
                                        within conduit 
					Line Voltage: VAC 3-conductor shielded minimum 18 AWG stranded within conduit

Distance				Maximum 61 m / 200 ft between controller and ESH-A Remote Sensor using 
                                        minimum 18 AWG stranded within conduit

Fuses					Thermal, resetting

Environmental

Operating Temperature		-20°C to 40°C (-4°F to 104°F)

Operating Humidity		15 - 90% RH non-condensing

Certifications

Conforms to:			CSA-C22.2 No. 205-M1983 (R2009), UL508 (Edition 17):2007 
					EMC Directive 2004/108/EC, EN 50270:2006, Type 1, EN61010 
					FCC. This device complies with part 15 of the FCC Rules. Operation is subject to the 
                                        following two conditions: (1) This device may not cause harmful interference, and 
                                        (2) this device must accept any interference received, including interference that 
                                        may cause undesired operation. 
					RoHS compliant circuit boards