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Method of Detection |
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Single cell NDIR with no moving parts
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Ranges Available |
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481 - 0-1, 0-5, 0-10, 0-20, 0-30, 0-50, 0-100% CO
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Resolution |
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0.1% CO on % versions, 1 PPM CO on PPM versions
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Accuracy & Repeatability |
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1% of full scale
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Drift |
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Less than 2% of full scale per month
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Response Time (T-90) |
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Less than 15 seconds
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Ambient Temperature Range |
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40 to 122°F (5 to 50°C), Lower temperatures (-5°C, -20°F) with Cold Weather Package
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Linearity |
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±1% of full scale
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Size & Weight |
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Physical data will vary depending on enclosure style and options required
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Power |
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115 VAC, 60 Hz
220 VAC, 50 Hz
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Output Options |
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4-20 mA into 500 ohms non-isolated standard
Isolated 4-20 mA, RS232, RS485, MODBUS, Ethernet outputs
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Alarms |
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High and/or low alarm contacts available, relay contacts SPDT 5A @ 220 VAC rating
Low flow alarm
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Analyzer Type |
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CO Analyzer
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Hazardous Area Rating Options |
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Class 1, Div 1, Grp A-D Hazardous Area Rating
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For continuous analysis of carbon Monoxide (CO) in process gas streams using an infrared detector. Percent and PPM levels available as Models 481 and 481L respectively.
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- Percent or PPM levels CO by infrared
- Detector is sensitive, very reliable, and non-depleting
- Bright digital readout, 4 - 20 mA outputs
- Fast response (T90 - less than 15 seconds)
- Microprocessor control for push button calibration
- Easy-to-maintain modular layout
- Built in sample pump, flowmeter and filters
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- Hi/Low gas, low flow, and diagnostic alarms available
- Isolated analog, RS232, RS485, MODBUS and Ethernet outputs available
- Sample conditioning systems available for removal of moisture, acidic gas and dust
- Cabinet purge system available for use in hazardous areas
- One-step 'cal-now' button with touch screen LCD display
- Full automatic calibration with touch screen LCD display
- Cold weather package for operation to -20°C (-5 °F)
- Cabinet coolers can be fitted to most models
- Sensors mounted in temperature controlled heated box to improve accuracy.
- High temperature filters and probes
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- Easily zero checked on ambient air
- Span using a known CO in nitrogen (N2) calibration gas.
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