รายละเอียดเพิ่มเติม
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Operating principle of NDIR sensor (used in ZSQ)
[/vc_column_text][vc_row_inner][vc_column_inner width=”1/2″][vc_column_text]Behind the sampling cell, two expansion chambers are arranged in series. When the gas in chambers is irradiated with IR, the gas expands, resulting in pressure increase. As the front chamber receives more IR than the rear chamber, there rises a pressure difference, generating a gas flow between them. Because the amount of IR absorbed in the cell and the amount of IR which reaches the chambers depends on the target gas concentration, the resulting gas flow between chambers also differs according to the target gas concentration. The mass flow sensor detects this gas flow to determine the target gas concentration.[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/2″][vc_column_text ovic_hidden_markup=”” ovic_vc_custom_id=”ovic_vc_custom_5d2ed7bfd6251″ hidden_markup_desktop=”” hidden_markup_laptop=”” hidden_markup_tablet=”” hidden_markup_ipad=”” hidden_markup_mobile=””]
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| Item | Specifications | |
|---|---|---|
| Components | CO (Non-dispersion infrared sensor), O2 (zirconia sensor) | |
| Range | CO: 0–200/500, 0–200/1000, 0–500/1000, 0–500/2000 ppm O2: 0–25 vol％ |
|
| Repeatability | ±0.5% FS | |
| Zero drift | CO: ±2% FS per week O2: ±2% FS per month |
|
| Span drift | ±2% FS per week | |
| Linearity | ±1% FS | |
| Response | ≤ 90 s (for 90% response, from the analyzer inlet) | |
| Output signal | • 4–20 mA DC (linear) (Instantaneous values, O2-corrected CO instantaneous value, O2-corrected CO moving average value per 1 hr or 4 hr) • Contact output (peak count and alarm, auto calibration status, error, etc) |
|
| Functions | Auto calibration, O2 correction, moving average value (per 1 hr or 4 hr), CO peak count and alarm, data recording (option) | |
| Operating environment | -5°C to +40°C, RH 90% or less | |
| Power supply voltage | 100 V AC, 50/60 Hz | |
| Dimensions | 600 (H) × 1550 (W) × 650 (D) mm, for indoor use | |
| Gas conditions | Temperature | ≤ 800°C |
| Dust | ≤ 100 mg/Nm3 | |
| Pressure | -1 to +5, -3 to +3, -5 to +1 kPa | |
| Components | SO2: ≤ 500 ppm, NOx: ≤ 1000 ppm, CO2: ≤ 15% | |
Gas Analyzers
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