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Infrared Gas Analyzer
Model IR400
 
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The IR400 infrared gas analyzer is capable of measuring the concentrations of NO, SO2, CO2, CO, CH4 and O2 components in sample gas. NO, SO2, CO, CO and CH4 are measured by the nondispersion infrared method (NDIR), while O2 is measured by the built-in type paramagnetic method sensor or an external mount-type zirconia method sensor. A maximum of 5 components including O2 (max. 4 components except for O2 measurement) are simultaneously measurable.
The mass flow type twin detector of high sensitivity and reliability adopted in the infrared ray method detection unit makes the measurement hardly affected by interfering components. In addition, the IR400 includes a microprocessor and has a large-size liquid crystal display, iproviding easy operation, high accuracy and multiple functions.
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Simultaneous and continuous measurement of up to 5 components including O2 and 4 components selected from among NO, SO2, CO, CO2, and CH4. |
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The mass flow type twin detector of high sensitivity and reliability minimizes interference from other gas components, ensuring excellent stability. |
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Incorporating O2 correction, average value computing, automatic calibration, one touch calibration, upper/lower limit alarm, remote measurement range changeover, range identification signal output, etc., the analyzer accommodates different application requirements. |
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Large LCD provides clear indications of all measured components and computed values and easy interactive operation. |
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Unitized construction of the main body on the 19-inch rack and of the signal input/output terminal module allows easy configuration of a gas analyzer system. |
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A maximum range ratio of 1:25 is achieved. |
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| Measurement principle |
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NO, SO2, CO2, CO, CH4: Non-dispersive infrared method, single light source-double beams
O2: Paramagnetic type (built-in), or zirconia type (external)
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| Sample gas conditions |
| Flow rate: 0.5 ±0.2 L/min |
| Temperature: 0 to 50 degC |
| Pressure: 10 kPa or less (Gas outlet side should be open to the atmospheric.) |
| Dust: 100 μg/Nm3 or less in particle size of 1 mm or less |
| Mist: Unallowable |
| Moisture: Below a level where saturation occurs at 2 degC (condensation unallowable). |
| Corrosive component: HCl 1 ppm or less |
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| Measurable gas components and measuring range |
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Minimum range |
Maximum range |
| NO |
0-50ppm |
0-5000ppm |
| SO2 |
0-50ppm |
0-10vol% |
| CO2 |
0-20ppm |
0-100vol% |
| CO |
0-50ppm |
0-100vol% |
| CH4 |
0-500ppm |
0-100vol% |
| O2(built in) |
0-5vol% |
0-25vol% |
| O2 (External Zirconia) |
0-5vol% |
0-25vol% |
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| Analog output signals |
4 to 20mA DC or 0 to 1V DC, nonisolated output |
| Analog input signal |
For signal input from externally installed O2 sensor. Nonisolated input. |
| Contact input |
Non-voltage contact (ON/0V, OFF/5VDC, 5mA flowing at ON) Isolated from the internal circuit with photocoupler. Contact inputs are not isolated from one another. |
| Transmission output |
Solenoid valve drive signal for automatic calibration. Transistor output (100mA or less) |
| Ambient temperature |
-5 to 45 deg C |
| Ambient humidity |
90% RH max., noncondensing |
| Dimensions (HxWxD) |
Analyzer main unit; 177x483x600mm
Input/output terminal module; 164x318x55mm |
| Weight |
Approx. 22kg (Only Analyzer) |
| Power supply |
85 to 264 V AV, 50/60 Hz (3-pin inlet terminal used) |
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| Linearity |
±1% F.S |
| Repeatability |
±0.5% F.S. |
| Zero drift |
±1% F.S. / Week |
| Span drift |
±2% F.S. / Week |
Response time
(for 90% FS response)
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Within 60seconds including replacement time of sample gas
(when gas flow rate is 0.5 l/min) |
| Temperature drift |
±1.5% F.S. / 10 degC |
| Effects of measured gas flow rate |
±1% F.S. for the rated flowrate ±10% |
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1. Measurement system for combustion exhaust gas from refuse incinerator and boiler
2. Gas from various types of industrial furnaces
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Infrared Gas Analyzer IR400 |
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