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An Exhaust Gas Analyzer (EGA), also commonly known as an emission analyzer, is a sophisticated diagnostic instrument designed to measure the concentration of specific gases present in the exhaust stream of internal combustion engines. It is a critical tool for automotive repair, environmental compliance testing, and engine performance research.
The primary function of the analyzer is to quantify key pollutant gases, most notably hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2), and oxygen (O2). For modern vehicles equipped with catalytic converters, it also precisely measures oxides of nitrogen (NOx). The device operates by extracting a sample of exhaust gas, typically via a probe inserted into the vehicle's tailpipe. This sample is conditioned (filtered, dried, and cooled) before being channeled into a series of dedicated sensors. Each gas component is detected using specific technologies: Non-Dispersive Infrared (NDIR) sensors for HC, CO, and CO2; electrochemical cells for O2 and NOx.
| Model | HPC501 |
| Measurement Range | HC: 0 ~ 10,000 ppm (vol) CO: 0 ~ 10% (vol) CO2: 0 ~ 20% (vol) O2: 0 ~ 25% (vol) NOx: 0 ~ 5,000 ppm (vol) λ (Air-Fuel Ratio): 0.50 ~ 3.00 COcor (Corrected CO): 0 ~ 10% (vol) |
| Indication Error | HC: ±12 ppm (Absolute) or ±5% (Relative) CO: ±0.06% (Absolute) or ±5% (Relative) CO2: ±0.5% (Absolute) or ±5% (Relative) O2: ±0.1% (Absolute) or ±5% (Relative) NOx: ±25 ppm (Absolute) or ±4% (Relative) |
| Repeatability | Error ≤ ±2% |
| Stability | Automatic zero calibration; Span drift ≤ ±3% |
| Resolution | HC: 1 ppm CO: 0.01% CO2: 0.1% O2: 0.01% NOx: 1 ppm λ: 0.01 |
| Response Time | ≤ 10 seconds (for 95% response) |
| Warm-up Time | 8 minutes (3-minute emergency warm-up available) |
| Output | Direct digital display. Supports optional printer for output of gas names, max concentrations, test time/date, etc. Equipped with interfaces for computer networking. |
| Environmental Conditions | Operating Temperature: -5°C to +50°C Relative Humidity: ≤ 90% |
| Power Supply | AC 100-240V, 50/60Hz, or DC 12V (requires optional power inverter) |
| Power Consumption | 40 VA |
| Dimensions (L × W × H) | 420 mm × 310 mm × 170 mm |
| Weight | Approx. 9 kg |
| Model | HPC500 |
| Measurement Range | HC:0~10000×10-6(ppm)vol CO:0~10×10-2(%)vol CO2:0~20×10-2(%)vol O2: 0~25×10-2(%)vol NOx:0~5000×10-6(ppm)vol λ:0.50~3.00 COcor:0~10×10-2(%)vol |
| Engine Speed | 0-9990rpm |
| Oil Temperature | 0-150ºC |
| Indication Error | HC: ±12 × 10^-6 (ppm) vol (absolute error) or ±5% (relative error) CO: ±0.06 × 10^-² (%) vol (absolute error) or ±5% (relative error) CO2: ±0.5 × 10^-² (%) vol (absolute error) or ±5% (relative error) O2: ±0.1 × 10^-² (%) vol (absolute error) or ±5% (relative error) NOx: ±25 × 10^-6 (ppm) vol (absolute error) or ±4% (relative error) |
| Repeatability | Repeat error ≤ ±2% |
| Stability | Automatic zero calibration; span drift ≤ ±3% |
| Resolution | HC:1×10-6(ppm)vol CO: 0.01×10-2(%)vol CO2: 0.1×10-2(%)vol O2: 0.01×10-2(%)vol NOx:1×10-6(ppm)vol λ:0.01 |
| Engine Speed | 10rpm |
| Oil Temperature | 0.1ºC |
| Response Time | 95% response ≤ 10 seconds |
| Warm-up Time | 8 minutes (emergency testing possible after 3-minute preheat) |
| Output Method | Can display on screen or print maximum, average, and minimum gas concentrations, license plate number, test time, date, engine speed, oil temperature, λ, and COcor values. Equipped with interface for computer networking. |
| Environmental Conditions | Temperature: -5 to 50°C; relative humidity ≤ 90% |
| Power Supply | AC 100-240 V, 50/60 Hz, or DC 12 V (with optional power inverter) |
| Power consumption | 40 VA |
| Dimensions | 420 mm (L) × 310 mm (W) × 170 mm (H) |
| Weight | Approximately 9 kg |
| Model | HPC518 |
| Measurement Range | HC: 0-10000×10^-6 ppm vol (Gasoline, n-Hexane equivalent) or C3H8: 0-20000×10^-6 ppm vol (LPG, Propane equivalent) |
| CO: 0-10×10^-² % vol | |
| CO2: 0-20×10^-² % vol | |
| O2: 0-25×10^-² % vol | |
| NOx: 0-5000×10^-6 ppm vol | |
| λ (Lambda): 0.50-3.00 COcor | |
| 0-10×10^-² % vol | |
| Indication Error | HC (0-2000 ppm): ±4 ppm or ±3% |
| HC (2001-5000 ppm): ±5% | |
| HC (5001-10000 ppm): ±10% | |
| CO (0.00-10.00×10^-² %): ±0.02×10^-² % or ±3% | |
| CO (10.01-14.00×10^-² %): ±5% | |
| CO2 (0.0-16.0×10^-² %): ±0.3×10^-² % or ±3% | |
| CO2 (16.1-20.0×10^-² %): ±5% | |
| O2: ±0.1×10^-² % or ±5% | |
| NOx: ±25 ppm or ±4% | |
| Stability | Automatic zero calibration, span drift ≤ ±3% |
| Repeatability | Repeat error ≤ ±2% |
| Resolution | HC: 1 ppm; CO: 0.01×10^-² %; CO2: 0.1×10^-² %; O2: 0.01×10^-² %; NOx: 1 ppm; λ: 0.01; RPM: 10 r/min; Oil Temp: 0.1 ºC |
| Response Time | ≤10 s (95% response) |
| Warm-up Time | 3 min (1 min for emergency testing) |
| Operating Conditions | Temperature: -5 to 50 ºC |
| Humidity: ≤90% | |
| Sensor Lifetime | Oxygen sensor: approx. 2 years |
| NOx sensor: approx. 14 months | |
| Power Supply | Built-in battery; DC 12 V vehicle power; AC 100-240 V, 50/60 Hz |
| Power Consumption | < 50 VA |
| Dimensions | 520×360×250 mm (L×W×H) |
| Model | HPC302 |
| Measuring Range | HC: 0-10000×10^-6 ppm vol |
| CO: 0-10×10^-² % vol | |
| NOx: 0-4000×10^-6 ppm vol | |
| Indicating Error | HC: ±12×10^-6 ppm (absolute error) or ±5% (relative error) |
| CO: ±0.06×10^-² % (absolute error) or ±5% (relative error) | |
| NOx: ±25×10^-6 ppm (absolute error) or ±4% (relative error) | |
| Stability | Span drift ≤ ±3% |
| Repeatability | ≤ ±2% |
| Resolution | HC: 1×10^-6 ppm vol |
| CO: 0.01×10^-² % vol | |
| NOx: 1×10^-6 ppm vol | |
| Response Time | ≤10 s (95% response) |
| Preheating Time | 8 min (3 min for emergency detection) |
| Output Mode | Digital direct reading; printer connection available; gas name, maximum value, average value, minimum value, test time and date printable; computer network interface supported |
| Operating Conditions | Temperature: -5 to 50 ºC |
| Relative humidity: ≤90% | |
| Power Supply | AC 100-240 V, 50/60 Hz or DC 12 V (with power inverter) |
| Power Consumption | 40 VA |
| Dimensions | 420 × 310 × 170 mm (L×W×H) |
| Weight | 9 kg |
| Model | HPC400 |
| Measuring range | HC: 0~10000×10-6(ppm)vol,CO: 0~10×10-2(%)vol ) CO2: 0~20×10-2(%)vol, O2: 0~25×10-2(%)vol R.M.P: 0~9999r.m.p OIL TEMP:0~150ºC Lambda: 0.50~3.00 COcor:0~10×10-2(%)vol |
| Indicating error | HC±12×10-6(ppm)vol ( absolute error ) or±5% ( relative error ) CO±0.06×10-2(%)vol ( absolute error ) or±5% ( relative error ) CO2±0.5×10-2(%)vol ( absolute error ) or±5% ( relative error ) O2±0.1×10-2(%)vol ( absolute error ) or±5% ( relative error ) |
| Stability | moment drift≤±3% |
| Repeatability | ≤±2% |
| Resolution | HC:1×10-6(ppm)vol, CO: 0.01×10-2(%)vol CO2: 0.1×10-2(%)vol, O2: 0.01×10-2(%)vol, Lambda: 0.01 R.P.M:10r.p.m, OIL TEMP:0.1ºC |
| Response time | 95% response is not more than 10 seconds |
| Preheating time | 8min ( preheating 3min emergency detection ) |
| Output Method | Output mode can display, print gas concentration maximum value, average value, the minimum value of the license plate number, test time, date, speed, temperature and COcor value of lambda, can interface with computer networking |
| And-use temperature | -5~50°C, Relative humidity: ≤90% |
| Power | AC100~240V 50/60Hz or DC12V( Add power inverter) Power consumption: 40VA |
| Dimension | 420 (L )×310(W)×170(H)mm |
| Weight | 9kg |
| Model | HPC401 |
| Measuring range | HC:0~10000×10-6(ppm)vol CO:0~10×10-2(%)vol CO2:0~20×10-2(%)vol O2: 0~25×10-2(%)vol λ:0.50~ 3.00 COcor:0~10×10-2(%)vol |
| Indicating error | HC±12×10-6(ppm)vol ( absolute error ) or±5% ( relative error ) CO±0.06×10-2(%)vol ( absolute error ) or±5% ( relative error ) CO2±0.5×10-2(%)vol ( absolute error ) or±5% ( relative error ) O2±0.1×10-2(%)vol ( absolute error ) or±5% ( relative error ) |
| Stability | moment drift≤±3% |
| Repeatability | Repeatability ≤±2% |
| Resolution | HC:1×10-6(ppm)vol, CO: 0.01×10-2(%)vol CO2: 0.1×10-2(%)vol, O2: 0.01×10-2(%)vol, Lambda: 0.01 R.P.M:10r.p.m, OIL TEMP:0.1ºC |
| Response time | 95% response is not more than 10 seconds |
| Preheating time | 8min ( preheating 3min emergency detection ) |
| Output mode | digital direct reading, gases can be attached printer name, in accordance with national standards and the average concentration of the maximum value, test time, date. Can interface with computer networking. |
| And-use temperature | -5~50°C, Relative humidity: ≤90% |
| Power | AC100~240V 50/60Hz or DC12V( Add power inverter)Power consumption: 40VA |
| Dimension | 420 (L )×310(W)×170(H)mm |
| Weight | 9kg |
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