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Product Lines » California Analytical Instruments » 650NOxygen
650NOxygen

650 CLD NO/NOX/O2 Digital Analyzer

The California Analytical Model 650 CLD NO/NOX/O2 digital analyzer is designed around a state-of-the-art 16 bit microprocessor, with 16 digital inputs, 16 digital outputs, 16 analog inputs and 4 analog outputs. The analyzer can be manually operated from the keypad or remotely via TCP/IP, RS-232C communications and discrete inputs.
The analyzer display includes screen presentation of all analyzer alarms. Four levels of password protection are provided. For precision measurements, the analyzer’s accuracy is increased by entering calibration curve fit polynomials.
Automatic calibrations may be activated locally or remotely or at preset times. The analyzer may also display NO, NOX, NO2, and O2 via selectable time and hold commands.



METHOD OF OPERATION

The California Analytical Model 650 NOxygen Analyzer utilizes the principle of chemiluminescence for analyzing the NO or NOX concentration within a gaseous sample. In the NO mode, the chemiluminescent reaction occurs between ozone and nitric oxide (NO) yielding nitrogen dioxide (NO2*) and oxygen. This reaction produces light. The intensity of this light is linearly proportional to the mass flow rate of NO into the reaction chamber. The light is measured with a photodiode and associated amplification electronics. The photodiode is thermoelectrically cooled and temperature regulated. In the NOX mode, NO plus NO2 is determined as above, however, the sample is first routed through the internal NO2 to NO converter which converts the NO2 in the sample to NO. The resultant chemiluminescent NO-O3 reaction is then directly proportional to the total NOX concentration. Local operation is simplified using the 20 button alphanumeric keypad with data presented on a back lit LCD display. All local operations may be performed remote via RS 232 and/or TCP/IP.

The California Analytical oxygen analyzer section utilizes the paramagnetic method to determine the percent level of oxygen contained in the sample gas. The oxygen level is displayed on the LCD panel in engineering units.

SPECIFICATIONS

DETECTORS: Chemiluminescence (CLD) Photodiode / Paramagnetic (O2)
NO/NOX RANGES: 0-1 to 3,000 ppm NO or NOX (Four user definable ranges)
(Higher Ranges Available upon Request)
O2 RANGE: 0 – 25%
RESPONSE TIME: T90 < 3 Seconds to 60 Seconds Adjustable
RESOLUTION – DETECTION LIMIT: 0.01 ppm NO/NOX (Displays 5 Significant Digits)
REPEATABILITY: Better than 0.5% of Full Scale
LINEARITY: Better than 1% of Full Scale
NOISE: Less than 0.5% of Full Scale
ZERO & SPAN DRIFT: Less than 1% of Full Scale per 24 Hours
ZERO & SPAN ADJUSTMENT: Via front panel, TCP/IP or RS-232
CO2 EFFECT: Less than 0.5% with 10% CO2
ADDITIONAL INTERFERENCE DATA: CO 1000 ppm – N/A, HCN 28 ppm - N/A, SO2 500 ppm – N/A
NH3 10 ppm – N/A, N2O 201 ppm – N/A
FLOW CONTROL: Electronic Proportional Pressure Controller
SAMPLE FLOW RATE: 2.0 L/min. ±1 L/min.
CONVERTER: Carbon Material @ 205 C; 98 to 100% Efficiency
OZONIZER: Ultraviolet Lamp
AIR OR O2 REQUIREMENTS: Dry Air less than 1 ppm NOX at 250 cc/Min. @ 25 psig
NO/NOX CONTROL: Manual/Remote/Auto Cycle (Remote NOX mode by dry contact closure)
OUTPUTS AVAILABLE: Scalable to 0-10 VDC or 4-20 mADC, RS232 and TCP/IP
DISCRETE ALARMS: General Fault/ TTL Logic (Ground True), Calibration Failure/ TTL Logic (Ground True),
High Concentration (2 each)/ TTL Logic (Ground True)
DIGITAL DIAGNOSTICS: Converter Temperature, Cell Temperature, Photo Diode Temperature, Air Pressure, Flow Rate & EPC Control Voltage, Sample Pressure, Flow Rate & EPC Control Voltage
KEYPAD DISPLAYS: Factory Settings
TCP/IP: Address, Scalable Analog, Output Voltages Password (4), Full Scale Range Select, Auto Cal Times
SPECIAL FEATURES: Calculated NO2 values from empirically derived NOX converter efficiencies
Auto Ranging, Auto Calibration (Adjustable through Internal Clock)
DISPLAY: Back lit LCD
SAMPLE TEMPERATURE: 50 °C, Non-condensing
CHAMBER TEMPERATURE: 66 °C
AMBIENT TEMPERATURE: 5 to 45 °C
AMBIENT HUMIDITY: Less than 90% RH Non-Condensing
WARM-UP TIME: 1 Hour
FITTINGS: 1/4 Inch Tube
POWER REQUIREMENTS: 115/230 (±10%) VAC; 50/60 Hz; 560 Watts
DIMENSIONS: 5¼ H x 19 W x 23 D (Inches)
WEIGHT: 48 Pounds

FEATURES

  • Measures from ppb to 3,000 ppm Full Scale (NO/NOx)
  • Four User Programmable Ranges from 0-1 ppm to 0-3,000 ppm
  • Oxygen Range 0 -1 % to 25 %
  • Fast Response Time
  • Auto Ranging
  • Auto Calibration
  • Output Options: Analog (User Scalable), Digital (RS232) including AK Protocol & TCP/IP
  • Displays & Outputs: Diagnostics, Alarms & Preventative Maintenance
  • Remote Monitoring and Control
  • Electronic Sample & Ozone Flow Control
  • Displays & Outputs: NO/NOX/NO2/O2 with Adjustable Time & Hold

APPLICATIONS

  • Stack Gases (CEM)
  • Scrubber Efficiency
  • Turbine/Generator Feedback Control
  • Process Chemical Gas Analysis
  • Personnel Safety
  • Power Plant Stack De-Nitrification
  • Vehicle Emissions
  • Other Custom Features available upon request

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