Continuous Emissions Monitors

API Model 200AH NO/NO2/NOx Analyzer

The API Model 200AH NO/NO2/NOx analyzer uses the analytical technique of chemiluminescence. The instrument is microprocessor controlled and can simultaneously output NO, NO2 and NOx concentrations. The unit has an internal high temperature convertor and calculates NO2 to NO conversion efficiency real-time. The provided vacuum pump provides vacuum for the reaction chamber and filtered air for ozone generation. Ranges are user defined from 5 to 5,000 ppm.

Manufacturer Advanced Pollution Instrumentation (API)
Analysis Method Chemiluminescent Range 5 - 5000 ppm
Range Mode ppm or mg/m3, Single Range, Auto Range, Remote Range, Range Control independent NO, NO2, NOx
Zero Noise 20 ppb rms
Span Noise < 2% of Reading
Zero Drift < 20 ppb / 24hrs.
Span Drift < 1% of reading /24 hrs.
Sample Flow 290 cc / min.
Lag Time < 20 Seconds Switching mode, < 6 Seconds NO or NOx only mode
Rise / Fall (95%) 60 Seconds Switching Mode 5 Seconds NO only Mode 10 Seconds NOx only Mode
Analog Output 0 - 100 mV, 1, 5 and 10V DC and 4 to 20mA
Power 115 VAC
Dimensions 7” x 17” x 23.5”
Weight 44 lbs



API Model 252 NOx Analyzer

The API Model 252 NOx analyzer uses the analytical technique of chemiluminescence. The instrument is coupled with an internal molybdenum convertor and can be coupled with an external stainless steel convertor. The provided vacuum pump provides vacuum for the reaction chamber and filtered air for ozone generation. Three selectable ranges can be chosen. Dilution - Extractive Range Instruments are available.

Manufacturer Advanced Pollution Instrumentation (API)
Analysis Method Chemiluminescent
Range 0 - 50, 100, 1000 or 0-100, 1000, 2500
Noise < 1% of reading
Zero Drift < 0.2% of reading
Span Drift < 2% full scale
Sample Flow 250 cc / min.
Response Time < 60 seconds
Analog Output 0 - 5 VDC
Power 115 VAC
Dimensions 7” x 17” x 22”
Weight 56 lbs


California Analytical Model 300CLD NO/NO2/NOx Analyzer
The California Analytical Model 300CLD NO/NO2/NOx analyzer uses the analytical technique of chemiluminescence. The instrument, unlike most other NOx analyzers, requires positive pressure for the sample and is supplied with a positive pressure pump. Response times are extremely fast, yet an external air supply is needed for ozone generation. Multiple ranges are available from 100 ppm to 10,000 ppm.

Manufacturer California Analytical Instruments
Analysis Method Chemiluminescence
Range 100 to 10,000 ppm
Response Time Adjustable from 1.5 to 10 seconds to 90% of full scale
Sample Flow Rate 2 liter/min. + 1.5 liter/ min.
Noise Less than + 0.5% of full scale
Zero & Span Drift Less than 1% of full scale per 24 hours
Analog Output 0 -10 VDC and 4 to 20mA DC
Converter Carbon material @ 250C: 90-100% efficiency
Power 115VAC
Dimensions 5 1/4”H x 19”W x 20”D
Weight 38 lbs

Service Note The California Analytical NOx Analyzer requires the use of an external air source for ozone generation. If you expect NOx concentrations above 2,000 ppm, an oxygen source is needed for proper operation.

California Analytical Model 600CLD NO/NO2/NOx Analyzer
The CAI Model 600CLD is a microprocessor-controlled chemiluminescence NOx analyzer that can simultaneously measure NO, NO2, and total NOx concentrations. The unit is provided with a low temperature, vitreous carbon converter that is specific to the NO2 to NO reaction (will not convert ammonia). This unit includes an internal sample pump, front panel zero/span “push button” controls, and excellent range capabilities. Note that this unit requires an external source of clean, dry air for ozone generation and oxygen is recommended for concentrations over 3000 ppm.

Ranges	0-1 to 0-5000 ppm (pre-defined and/or user defined)
Detection Method	Chemiluminescence
Sample Gas Input	1/4-inch Tube; 1.5 to 3 lpm
Analog Outputs	0-10 Vdc, 4-20mA (please specify if desired)
Power Requirement	110 VAC/60 Hz
Shipping & Weight	32x25x14 – 80 lbs

 

California Analytical Model 400CLD NO/NOx Analyzer
The CAI Model 400CLD NOx analyzer uses the analytical technique of chemiluminescence. The unit is provided with a low temperature, vitreous carbon converter that is specific to the NO2 to NO reaction (will not convert ammonia). This unit includes an internal sample pump, front panel zero/span potentiometers, and a NO/NOx selector switch. Note that this unit requires an external source of clean, dry air for ozone generation.

Ranges	0-30, 100, 300, 1000, 3000 ppm (pre-configured)
Detection Method	Chemiluminescence
Sample Gas Input	1/4-inch Tube; 3 lpm
Analog Outputs	0-10 Vdc, 4-20mA (please specify if desired)
Power Requirement	110 VAC/60 Hz
Shipping & Weight	32x25x14 – 78 lbs

 

California Analytical Model 400HCLD Heated NO/NOx Analyzer
The CAI Model 400HCLD is a heated NOx analyzer that uses the analytical technique of chemiluminescence. The unit maintains sample temperature above dew point until it reaches the converter. This technique minimizes the NO2 loss from traditional gas conditioning systems. The unit is provided with a low temperature, vitreous carbon converter that is specific to the NO2 to NO reaction (will not convert ammonia). This unit includes an internal sample pump, front panel zero/span potentiometers, and a NO/NOx selector switch. Note that this unit requires an external source of clean, dry air for ozone generation.

The Model 400 HCLD has been designed to meet the specific requirements of the US EPA Federal Register, Title 40, Subpart D and Subpart N.

Ranges	0-1 to 0-3000 ppm (pre-configured)
Detection Method	Chemiluminescence
Sample Gas Input	1/4-inch Tube; 3 lpm
Analog Outputs	0-10 Vdc, 4-20mA (please specify if desired)
Power Requirement	110 VAC/60 Hz
Shipping & Weight	32x25x14 – 80 lbs

 

NO2-to-NO Converter, API Model 501
The Model 501 converter is a stand-alone converter designed for use with existing NO analyzers. The unit incorporates a high temperature 316 stainless steel converter with adjustable temperature controller, a low fixed temperature molybdenum converter and an ammonia scrubber. Converters can be selected via a switch from the front panel, and transported ammonia concentrations can be determined by routing the scrubber into and out of the sample path.

Ranges	Molybdenum up to 10 ppm NO2 @ 90% efficiency; Stainless steel up to 150 ppm NO2 @ 90% efficiency
Detection Method	N / A
Sample Gas Input	1/4-inch Tube; 1 lpm maximum
Analog Outputs	N / A
Power Requirement	110 VAC/60 Hz
Shipping & Weight	32x25x14 – 55 lbs

Technician’s Notes Please note that our converters have been modified from original factory configuration in order to meet the specifications as defined here. All questions concerning these modifications should be directed to Cherokee Instruments.

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