SEC Millenium Carbon Dioxide Gas Detector Instruction and Operation Manual Part Number 71-5000 Version 100201
(SEC) designs and manufactures innovative fixed system gas detection equipment, for combustible gases, oxygen, carbon dioxide and toxic gases. Commitment Our quality and service are uncompromising. We back each of our products with a two-year warranty on all materials and workmanship. We offer technical support, user training and on-site service and maintenance of equipment to meet the needs of our customers.
Table of Contents I. SPECIFICATIONS II. GENERAL DESCRIPTION III. OPERATION Installation and Startup IV. CALIBRATION V. MAINTENANCE VI. PARTS LIST VII.
I. SPECIFICATIONS Model: SEC MILLENIUM Infrared Carbon Dioxide (CO2) Gas Detector Part Number: 142-0617 Specify range when ordering Detection Method: Diffusion Optional sample draw (requires a minimum of 1 liter per minute flow rate) Available Ranges: 0-1% Volume 0-2% Volume 0-5% Volume (1 % volume = 10,000 PPM) High level CO2 (and hydrocarbon gases) monitors available in SEC Signature product line Output (analog): 4-20 mA (Source type), max.
II GENERAL DESCRIPTION CONVENTIONS The following conventions are used in this manual. ! Warning Statement VDC (DC Voltage) SEC MILLENIUM The SEC MILLENIUM Infrared gas detector is a microprocessor based intelligent gas detector that continuously monitors carbon dioxide gases and vapors within the specified range. The SEC MILLENIUM is ideally suited for use in harsh environments.
Infrared Absorption Spectrum for Carbon Dioxide Transmittance 100% 0% Reference Band Absorption Band Wavelength The dual channel receiver is a single wafer, double filtered, dual receiver with an internal optical barrier. The elements are perfectly matched resulting in overall stability and superior performance throughout the entire temperature range.
III. OPERATION Installation and Startup ! Warning: The user shall be made aware that if the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. The first step in the installation process is to establish a mounting location for the SEC MILLENIUM. Select a location that is typical of the atmosphere to be monitored or close to the anticipated source of a dangerous gas.
Warm-up When power is applied to the detector, it enters a one (1) minute warm-up mode. The output current will be 0.8 mA during the warm up time period. At the end of the warm-up period with no faults present, the detector automatically enters the normal operating mode (4 mA). If a fault is present after warm-up, the detector current output will indicate a fault. See the following chart for fault code status.
IV. CALIBRATION SEC MILLENIUM The SEC MILLENIUM is factory calibrated zeroed and spanned. Unlike other types of sensors it does not require routine span gas calibration to ensure proper operation. The SEC MILLENIUM is required to be spanned with gas only one time with CO2. Typically this is done at the factory, but it is possible to field span the device by connecting the SEC MILLENIUM to a computer and using a software package provided by SEC. Please contact the factory for further details.
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VII.
WHITE: Calibration/Data RED: +24 VDC 3/4“ NPT THREAD BLACK: -24VDC (DC Common) BLUE: 4 TO 20 mA Out OutOUTPUT Earth Ground Stud 10-32 6.5 inches 165mm 2.
WIRE ENTRY FOR RETURN TO SEC 3100 3/4 NPT WIRE ENTRY FOR SENSOR 3/4 NPT NOTE: HOUSING RATED FOR CLASS 1, DIV 1, GROUPS B, C AND D SEC SENSOR SEPARATION KIT FIGURE 2 12
