The California Analytical Instruments Model 400 HCLD
Analyzer utilizes
the principle of chemiluminescence for analyzing the NO or NOx
concentration within a gaseous sample. In the NO mode, the method is
based upon the chemiluminescent reaction between ozone and nitric oxide
(NO) yielding nitrogen dioxide (NO2) and oxygen.
Approximately 10% of
the NO2 produced from this reaction is in an
electronically excited
state. The transition from this state to a normal state produces light
which has an intensity proportional to the mass flow rate of NO2
into
the reaction chamber. The light is measured by means of a photodiode
tube and associated amplification electronics. 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 reaction is then directly proportional to the
total concentration of NOx. The entire sample, prior to the reaction
chamber, is maintained at a temperature of 65°C.
SPECIFICATIONS
ANALYSIS METHOD:
Chemiluminescence (CLD) Photodiode Detector
MULTIPLE RANGE CAPABILITY:
5 Ranges Select Group A, B, C, D, or E
A: 0-3, 10, 20, 50, 100
ppm
B: 0-5, 10, 20, 50, 100 ppm
C: 0-5, 10, 25, 50, 100 ppm
D: 0-10, 30, 100, 300, 1000 ppm
E: 0-30, 100, 300, 1000, 3000 ppm
RESOLUTION:
30 ppb NO/NOx
NOISE: Less
than 0.5% of Full Scale
LINEARITY:
±0.5% of Full Scale
REPEATABILITY:
Better than 0.5% of Full Scale
ZERO & SPAN DRIFT:
Less than ±0.5% of Full Scale per Week
ZERO & SPAN
ADJUSTMENT: Ten Turn Potentiometer
DISPLAY:
4-1/2 Digit Panel Meter. Selectable 0-100% Full Scale of Direct Reading
DIAGNOSTICS:
3-1/2 Digit Panel Meter with 4-Position Switch
1. Sample Pressure
2. Air Pressure
3. Cell Temperature
4. Converter Temperature
5. Oven Temperature
6. Filter Temperature
RESPONSE TIME:
Adjustable from 1.5 to 10 Seconds to 90% of Full Scale
ANALOG OUTPUT:
0-10 VDC & 4-20 mADC
OZONE SOURCE:
Ultraviolet Lamp
FLOW CONTROL:
(Sample & Ozone) Electronic Proportional Pressure Control
SAMPLE FLOW RATE:
3.0 L/min. ±0.5 L/min. (pump optional = 2.5 psig); span
20-25psig
AIR OR O2 REQUIREMENTS: Zero
grade; less than 0.1 ppm NOx at 250-650 cc/min. @ 25 psig
O3CONTROL:
Manual Push Button with Automatic Shutdown with Loss of Air or Oxygen
Pressure
CONVERTER:
Vitreous Carbon material @ 200°C (130-210°C); 98 to
100% Efficiency
INTERFERENCES:
CO2
@ 1% with 10% CO2
H2O @ 1% with 3% H2O
CO 1000 ppm not measurable
NH3 139 ppm not measurable
HCN 28 ppm not measurable
N2O 201 ppm not measurable
SO2 500 ppm not measurable
NO/NOx SELECTION:
Manual Push Button or Remote
AMBIENT TEMPERATURE:
0-40°C
SAMPLE TEMPERATURE:
0-65°C
WARM-UP TIME:
1 Hour
FITTINGS:
1/4” Tube, Compression
POWER REQUIREMENTS:
115/230 (±10%) VAC @ 50/60 Hz, 160 watts
DIMENSIONS:
51/4”H x 19”W x 23”D
RELATIVE HUMIDITY: Less
than 90% RH
WEIGHT: 65
lbs.
Resolution 30 ppb NO/NOx
Automatic High Voltage Shutdown with Loss of Ozone Air
Complete Digital Presentation Including Sample & Air
Pressure
Five Ranges
Remote Operation Capability
Heated Sample Pump (Optional)
Heated Sample Handling System
CE Approved
Stack Gases (CEM)
Source Monitoring
Scrubber Efficiency
Process Chemical Gas Analysis
Personnel Safety
Power Plant Stack De-Nitrification
Vehicle Emissions
