CETDCC-000

Gas Detection Dual Channel Controller

Critical Environment Technologies - DCC

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Description

The DCC Dual Channel Controller is a comprehensive and dependable, self-contained system that offers one or two channel configurations for monitoring toxic, combustible and solid state refrigerant gases 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 remote solid state 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 with VFD control, a 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 digital 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.

Key features

Applications

Single or dual channel operation
Flexible internal and/or remote sensor configurations
2x16 character LCD display with LED indicators
Two 5-amp SPDT dry contact relays
Two 4- 20 mA outputs with VFD control
One configurable 4 - 20 mA input
Optional loud or water tight, door mounted buzzer
Thermal resetting fuses
Standard water / dust tight, corrosion resistant enclosure (drip proof);
IP54 rated with optional splash guard installed

Parking Garages with VFD control
Indoor Commerical Swimming Pools
Firehalls
Ice Arenas
Wineries
and many more

Technical specifications
Gas Type
Electrochemical (internal)	Carbon Monoxide (CO),Nitrogen Dioxide (NO2), Nitrogen Oxide (NO),Oxygen (O2),Hydrogen Sulphide (H2S),Ethylene (C2H4),Sulphur Dioxide, (SO2)
Refrigerants (remote)	R22, R134A, R402A, R404A, R407C, R410A, R422D, R507A
Combustible (catalytic)(remote)	Hydrogen (H2),Methane (CH4), Propane (C3H8)
TVOCs (solid state) (remote)
Mechanical
Enclosure	ABS / Polycarbonate, rated UL94-5VA; IP54 rated with splash guard installed. Copper coated interior to reduce RF interference.
Weight	600 g (1.4 lb)
Size	10.0” x 8.6” x 4.3” (254 mm x 218 mm x 109 mm)
User Interface
Display	2x16 character LCD digital display with LED Panel indicating “CH1” state, “CH2” state, and FAULT”
“SILENCE” Push Button	Temporarily clears buzzer / latched relays
Input / Output
Input	4-20 mA analog
Output	Two 4-20 mA analog with VFD control
Relays	Two SPDT dry contact relays, rated 5 amps @ 240 VAC
Audible Alarm	- Standard internal buzzer - Optional loud, door mounted buzzer, rated 90 dB @ 30 cm - Optional water tight, door mounted buzzer, rated 85 dB @ 2 ft
Electrical
Power Requirement	Low Voltage : 16 - 30 VDC or 12 - 28 VAC, 10 W, Class 2 Line Voltage : 90 - 240 VAC, 50 - 60 Hz
Current Draw	Low Voltage : 400 mA @ 24 VDC (400 mA RMS @ 24 VAC) Line Voltage (110 VAC) : Approximately 90 mA Line Voltage (220 VAC) : Approximately 45 mA
Wiring	Low Voltage : 24 VDC or 24 VAC two-conductor shielded; Line Voltage : VAC three-conductor shielded
Distance	Maximum 200 ft between DCC controller and ESH-A Remote Sensor using minimum 18 gauge wire stranded within conduit. Reference the manual for maximum distances to maintain for remote 4-20 mA transmitters.
Fuses	Automatic resetting thermal
Environmental
Operating Temperature	-40°C to 50°C (-40°F to 122°F)
Humidity	15 - 90% RH non-condensing
Certification
Conforms to:	CSA-C22.2 No. 205-M1983 (R2009) UL508 (Edition 17):2007
Conforms to	EMC Directive 2004/108/EC EN 50270:2006, Type 1, EN61010
Conforms to	FCC. This device complies with Part 15 of the FCC Rules

Product codes

Find the Type and follow the instructions to add the sensor from the appropriate [GROUP] to build the DCC package you require:

Type A: Single Channel (Internal Electrochemical Sensor) Choose 1 internal sensor from [GROUP 1]. Part number is DCC-A + part number listed in [GROUP 1].

Type B1: Single Channel (Remote 4 - 20 mA Transmitter) No internal sensor. Choose 1 remote transmitter from [GROUP 2]. Part number is DCC-B-RT + transmitter part number.

Type B2: Single Channel (ESH-A Remote Sensor -Solid State) No internal sensor. Choose 1 remote ESH-A sensor from [GROUP 3]. Part number is DCC-B-R +part number listed in [GROUP 3].

Type B3: Single Channel (ESH-A Remote Sensor - Catalytic) No internal sensor. Choose 1 remote ESH-A sensor from [GROUP 4]. Part number is DCC-B-R +part number listed in [GROUP 4].

Type D1: Dual Channel (Internal Electrochemical Sensor + Remote 4-20 mA Transmitter) Choose 1 internal sensor from [GROUP 1] and 1 remote transmitter from [GROUP 2]. Part number is DCC-D-RT+part number listed in [GROUP 1] + transmitter part number.

Type D2: Dual Channel (Internal Electrochemical Sensor + ESH-A Remote Sensor - Solid State) Choose 1 internal sensor from [GROUP 1] and 1 ESH-A remote sensor from [GROUP 3]. Part number is DCC-D-R +part number listed in [GROUP 1] + [GROUP 3].

Type D3: Dual Channel (Internal Electrochemical Sensor + ESH-A Remote Sensor - Catalytic) Choose 1 internal sensor from [GROUP 1] and 1 ESH-A remote sensor from [GROUP 4]. Part number is DCC-D-R +part number listed in [GROUP 1] + [GROUP 4].

Type E: Dual Channel (Internal Electrochemical Sensors) Comes with 1 internal CO sensor. Choose second internal sensor from [GROUP 1]. Part number is DCC-ETCO + part number listed in [GROUP 1].