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SCC Self Contained Controller
Brand: Critical Environment TechnologiesThe SCC Self Contained Controller is available in one or two channel configurations for monitoring toxic and/or combustible gas types by means of an internal electrochemical Carbon monoxide (CO) or Nitrogen dioxide (NO2) sensor and one of three ESH-A remote catalytic combustible sensors used to detect Hydrogen (H2), Propane (C3H8) or Methane (CH4).
Monitoring of CO or NO2 may also be achieved remotely by combining the SCC with a 4-20 mA transmitter such as the LPT-TCO or LPT-END.
The SCC also features two alarm level line voltage relays with field configurable time delays and trigger levels, a field selectable internal audible alarm and an LED panel indicating power, channel alarm status and fault conditions.
Automated calibration and other maintenance procedures are simple and easily performed in the field, and our proprietary Calibration Extending Firmware (CEF) takes into account the aging of the toxic gas sensors so that less frequent calibrations are required in less-critical applications such as parking garages.
Features- Single or dual channel operation
- Flexible internal and/or remote sensor configurations
- LED indicators for Power, Ch1, CH2 and Fault
- Two dry contact relays, 5-amps @240 volts each
- One configurable 4-20 mA input
- Line Voltage (90-240 VAC) or Low Voltage (24 VAC/VDC)
- Internal audible alarm
- Standard water / dust tight, corrosion resistant enclosure (drip proof); IP54 rated with water tight, door mounted audible alarm installed
Specifications
Gas Sensors
- Carbon Monoxide (CO)
- Nitrogen Dioxide (NO2)
- Hydrogen (H2)
- Methane (CH4)
- Propane (C3H8)
Enclosure
- ABS / Polycarbonate, corrosion resistant
- Copper coated interior to reduce RF interference
- IP54 rated with optional splash guard installed
Input
- 4-20 mA analog
Relay
- Two internal SPDT dry contact relays rated 5 amps @ 240 VAC
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
Operating Temperature
- -20 °C to 40 °C
Certifications
- CSA-C22.2 No. 205-M1983 (R2009)
- UL508 (Edition 17):2007
- EMC Directive 2004/108/EC, EN 50270:2006, Type 1, EN61010
- RoHS compliant circuit boards