ENDA-600 Series Stack Gas Analyzer System
Overview
The ENDA-600 Series is a lineup of analyzers for the highly sensitive and accurate measurement of NOx, SO2, CO, CO2, and O2 stack gases emitted from combustion furnaces and the boilers of thermoelectric power plants. The units are capable of the simultaneous and continuous measurement of five different components using only one analysis device. The economical, space-saving, low-maintenance units offer stable monitoring over the long term and are equipped with such standard functions as automatic calibration, calculation, moving average, external confirmation direct output, and self-diagnosis. Offering superior operability and minimal maintenance, the sampling systems have been standardized into six types, including those for monitoring boiler gases, waste incineration, mining, and processing, thereby providing users with a choice of systems that meet the demands of a variety of fields and uses. For example, the ENDA-625 (CO/O2) is especially suited for stable combustion control and waste incineration plants, which are subject to laws regarding the emission of dioxins.
Features
- A single analysis unit provides continuous, highly accurate monitoring of NOx, SO2, CO, CO2, and O2.
- A NOx/CO2 interferant element sensor provides continuous compensation and accurate NOx monitoring limits the influence of CO2.
- The units are equipped with an automatic seven-day calibration function (standard) and can be equipped with a 1-9 day calibration function.
- A purge controller automatically purges clogs due to dust on a set cycle.
- The units are equipped with a reagent gas probe that is easy to insert and remove.
- An independent humidity mechanism minimizes damage due to liquefaction (units for use at waste incinerators, electric power plants, and glass furnaces).
- There is no alteration to any reagent gas composition, and a dust catcher completely removes SO3.
Manufactured by HORIBA
Specifications
Model | ENDA-600 | |||||
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 | 5~50 vol% | 10~25 vol% |
| Optional | 100~5000 ppm | 50~5000 ppm | 50~5000 ppm | - | - |
Range Ratio | Within a factor of 10 | Within a factor of 10 | Within a factor of 10 | Within a factor of 10 | Within a factor of 2.5 | |
Repeatability | Within 0.5% of full scale (with optional range, or during O2 measurement, ±1.0% of full scale) | |||||
Linearity | ±1.0% of full scale | |||||
Zero drift | ±1.0% of full scale per week(assuming surrounding temperature is maintained within 5 °C) | |||||
Span drift | ±2.0% of full scale per week (assuming surrounding temperature is maintained within ±5°) | |||||
Response time*3 | Within 60 seconds (Td + T90 from equipment intake area) (within 240 seconds for SO2 only) | |||||
Overall interference frrom co-existing gases | ±2.0% of full scale per week (within standard range, with standard gas formation, not including SO2 analyzer used for LNG) | |||||
Display | 4-digit LED display | |||||
Environment | 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/S2 or less | |||||
Measuring Gas Condition | Temperature | 250 °C or lower | ||||
Dust | 0.1 g/Nm3 or less | |||||
Standard gas composition*5 | NO: 500 ppm or less; NO2: 6 ppm or less; SO2: 1000 ppm or less; SO3: 50 ppm or less; | |||||
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) | |||||
Sample gas pressure control | Constant-pressure trap | |||||
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 | Contact closure to signal analyzer malfunction, calibration error, power failure (or circuit breaker failuer), range identification, under calibration, under maintenance, under purge (option) | |||||
Calibration gas | Zero gas | N2 or Ambient air | ||||
O2 carrier gas | Ambient air | |||||
Span gas | Gas cylinder for each component measured (when there is no measurement method authorization: O2 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; | |||||
Voltage at power source | AC line, 47.5 Hz to 63.0 Hz | |||||
Power consumption | 900 VA plus additional 600 VA for the cold-climate version | |||||
Exterior dimensions/Mass | 1 to 2 component system with 6 calibration gas cylinders; 600 (W) x 1800 (H) x 800 (D) mm / Approx. 250 kg 2 to 5 component system with 6 calibration gas cylinders; 800 (W) x 1800 (H) x 800 (D) mm / Approx. 280 kg | |||||
Materials in contract with sample gas | SUS-316 stainless steel, Teflon, polypropylene, flourorubber, PVC, and glass | |||||
Standard system enclosure | Door: Front opening Interface: Right front | |||||
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 NH3 scrubber is available as an option for cases where a combined gas includes NH3. SO2 measurement corrected for CH4 interference is available for cases where there is CH4 in the sample gas for SO2 measurement. CO measurement corrected for N2O interference is available for cases where there is N2O in the sample gas for CO measurement.