北京松信宏澤科技有限公司
：潘女士
：
M90 CO2 分析儀
產品簡介：
This uniquely rugged and simple design by Envent Engineering utilizes dual-beam technology for accuracy and stability.
應用：
CO2 is measured routinely in natural gas for product quality and process control purposes. Common ranges are from 0–5% for sales gas and up to 0–30% for inlet CO2 concentration. Some H2S removal chemical processes can be fine-tuned by slip stream as much CO2 as possible to gain volume but not so much as to exceed pipeline tariff limits of typically 2–4%. CO2 is also a combustion byproduct and needs to be quantified.
M90 CO2 分析儀
產品特點：
True Dual-Beam Technology
Long-term stability
Low power consumption
Alarms
Backlit, 16-character, 2-line Display
4–20 mA output
Value
The M90 dual-beam IR CO2-detection system continuously measures and corrects for the short and long-term changes that caused measurement errors in first-generation, single-beam CO2 sensors. The M90 is a compact CO2 sensor which uses less than 2 watts of operating power, provides linearized analog or digital measurement outputs. Options include adjustable set point control relays.
The M90 offers industry-leading value in price for Class 1, Division 1 Groups C & D hazardous locations. Standard range is 0–20 % CO2 but other ranges available upon request.
技術參數：
| Enclosure | Class 1, Div1 Grps C & D |
| Operating Principle | Dual-beam, non-dispersive infrared (NDIR) |
| Detector | Sapphire window with glass frit seal |
| Sensing Cell Proof Pressure (sample cell only) | 2 PSI (13.8 KPa) gauge pressure |
| Measurement Range | 0–20% CO2 (other ranges available upon request) |
| Repeatability | ± 0.1 % CO2 |
| Lower Detectable Limit | 0.1 % CO2 |
| Drift | Less than 2.5% of reading/year |
| Accuracy | ± 3% of reading or 0.1% CO2 at cal temperature ± 5% of reading or 0.1% CO2 over full operating temperature range |
| Warmup time | Less than 5 minutes |
| Operating Temperature | 10 - 50?C |
| Operating Humidity | Sensing Cell: 0–100% RH (non condensing) Electronics: 0–90% RH (non condensing) |
| Storage Temperature | -20–60?C. |
| Storage Humidity | 0–90% RH (non condensing) |
| Analog Output | Isolated 4–20 mA |
| Digital Interface | RS-485 & RS-232 |
| Operating Power | 24 VDC at 5 Watts standard, 12 VDC optional |
| Source Life | 10 years minimum |
| Alarm Outputs | 2 solid state drivers 2 Amp, 30 VDC maximum |
| Standard Sample System | Inlet filter (1,500 psig max) and SS single stage regulator (3,000 psig max), flow meter (100 psig max) mounted |
北京松信宏澤科技有限公司
：潘女士
：
