Continuous simultaneous and high-precision measurement of NOx, SO2, CO, CO2Â and O2
HORIBA has over 100,000 CEM systems installed and 30 years of quality and experience. That is the base on which HORIBA’s new ENDA-5000 series of stack-gas analysis systems are built. These systems have a small footprint and use cross-flow modulated non-dispersive infrared (NDIR) and magneto-pneumatic detectors that are inherently drift-free. The ENDA-5000 series are superior continuous analysis systems that perform reliably for difficult exhaust gas measurements, when measurement errors cannot be tolerated. This CEM series features a new intuitive touch panel that makes every operation available with the touch of a single button. The ENDA-5000 series systems are also designed for ease of maintenance. They are ideal for a variety of uses, including emissions monitoring from steam boilers, refuse incinerators, and electric power generation plants to assure pollution standards are being met.
Features
- Long-term stability : Cross-flow modulated non-dispersive infrared (NDIR) detection is renowned for long-term stability
- No need for optical adjustments
With  NDIR, the sample gas and reference gas are intromitted into a single measurement cell alternately to obtain modulation signal. Therefore there is no need to adjust two different optical paths so that they are balanced. - A stable zero point
Since ENDA-5000 series output the difference between the measured gas and the reference gas each time measurement occures (once a second), the zero point is extremely stable. - Continuous cleaning keeps the cell clean
Since cleaning air is fed into the sample cell in between each batch of sample gas, the cell resistes contamination and normally remains clean.This reduces span drift and makes the equipment safe and stable for long periods of time.
- No need for optical adjustments
- Compact : Body yields wider maintenance area
ENDA-5000 series can be installed almost anywhere, with ample room on all sides for easy access and much easirer maintenance. - Easy to use : Features an intuitive touch panel
The operator can easily switch between the corrected and converted density settings screens or view alert information with touch of a single button.
Specifications
| Model | ENDA-5000 | ||||||
| Component | NOx | SO2 | CO | CO2 | O2*1 | ||
| Measurement methods | NDIR | NDIR | NDIR | NDIR | Magneto-pneumatic detection | ||
| Range*2 | Standard | 200~5000 ppm | 200~5000 ppm | 200~5000 ppm | 5~25 vol% | 10~25 vol% | |
| Option | 100 ppm~ | 50 ppm~ | 100 ppm~ | – | – | ||
| Range Ratio | Within a factor of 10 | Within a factor of 10 | Within a factor of 10 | Within a factor of 5 | Within a factor of 2.5 | ||
| Repeatability | Within 0.5% of full scale/week (with optional range, or during O2 measurement, ±1.0% of full scale/week) | ||||||
| Linearity (indicator error) | ±1.0% of full scale | ||||||
| Zero drift | ±1.0% of full scale/week (assuming surrounding temperature is maintained within 5 °C) (with optional range, or O2 measurement, ±2.0% of full scale/week) |
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| Span drift | ±2.0% of full scale/week (assuming surrounding temperature is maintained within 5°) | ||||||
| Response time*3 | Within 60 seconds (Td + T90Â from equipment intake area) (sample flow 0.6 L/min.) (within 240 seconds for SO2Â only) | ||||||
| Overall interference from co-existing gases | ±2.0% of full scale (within standard range, with standard gas formation) | ||||||
| Display | Touch panel LCD (backlight) (four usable lines) | ||||||
| Environment Condition |
Temperature | -5 to 40 °C (away from direct sunlight and radiation heat )*4 | |||||
| Humidity | 85% or less (no condensation) | ||||||
| Vibration | 100 Hz, 0.3 m/s2or less | ||||||
| Dust | Standard environment or better | ||||||
| Measuring Gas Condition | Temperature | 250 °C or lower | |||||
| Dust | 0.1 g/Nm3Â or less | ||||||
| Standard gas composition*5 | NO: 500 ppm or less; NO2: 15 ppm or less; SO2: 1000 ppm or less; SO3: 50 ppm or less; CO: 200 ppm or less; CO2: 15% volume or less; H2O: 20% volume or less |
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| Sampling method | Dry sampling using an electric cooler | ||||||
| Sample gas flow | 2.5 L/min~3.0 L/min | ||||||
| Sample inlet tube | Teflon tubing (Ø8/Ø6 mm) | ||||||
| Sample gas pressure | ±4.9 kPa (three points selected) (with no sample gas back pressure) |
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| Pressure control | Pressure control uses a regulator and pump; Reduced pressure sampling; Control pressure: -4.9 kPa | ||||||
| Output | DC 4 to 20 mA (absolute output) (DC 0 to 16 mA/DC 0 to 1 V/DC 1 to 5V optional) Max. 12 output systems | ||||||
| External output | Analysis alerts, analysis warnings, range display, corrections, conservation, purging (option) Contact capacity: DC 30 V 1 A, AC 250 V 1 A resistance load |
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| Correction method | Dry correction, automatic correction (correction cycle: 7 days standard, can be adjusted to between 1 and 99 days), manual correction | ||||||
| Calibration gas | Zero gas | With measurement method authorization: N2, When there is no measurement method authorization: N2Â or ambient air | |||||
| O2Â carrier gas | Ambient air | ||||||
| Span gas | Gas cylinder for each component measured (when there is no measurement method authorization: O2Â or ambient air can be used) | ||||||
| Probe collection point filter | Flange: JIS 10K, 40 AFF; Sample probe tube length: 1000 mm; Material: SUS-316 stainless steel; Filï½”er element: SUS-304 stainless steel and 2um-pleated quartz wool; Electric heater: 100 VA, with water droplet proof case |
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| Power supply | AC 100 V ±15 V(85 V~115 V) | ||||||
| Power frequency | 50/60 Hz (switchable) | ||||||
| Power consumption | About 800 VA (heated piping 30m: +1100 VA; heater in tray: +300 VA) | ||||||
| Exterior dimensions/Mass | 600 (W) x 1770 (H) x 300 (D) mm (high pressure gas cylinders, 3.4 L cylinders, maximum of 3 cylinders); About 180 kg (not including cylinders) 600 (W) x 1770 (H) x 300 (D) mm (high pressure gas cylinders, 3.4 L cylinders, maximum of 3 cylinders); About 200 kg (not including cylinders) |
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| Materials in contract with sample gas | SUS-316 stainless steel, SUS-304 stainless steel, Teflon, polypropylene, polyethylene, flourorubber, PVC, PVDF, and glass |
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| Enclosure | Independent outdoor installation Plate thickness: Main unit, doors, top plate, steel plate: 2.3 mm; Channel base: 3.2 mm; Doors: front opening; Interface: right front |
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| Color/Finish | Semi-gloss Munsell 5Y7/1 on all inner and outer surfaces | ||||||
*1: No carrier gas cylinder is required.
*2: Up to two ranges are supported for each component.
*3: Response time may vary depending on the sampling system composition.
*4: Support is available for -15 to 40 °C (cold-climate version) and 5 to 50 °C.
*5: An NH3Â scrubber is available as an option for cases where a combined gas includes NH3. SO2Â measurement corrected for CH4Â interference is available for cases where there is CH4Â in the sample gas for SO2Â measurement. CO measurement corrected for N2O interference is available for cases where there is N2O in the sample gas for CO measurement.
