Carbon Dioxide CO2 Analyzer

Model: M90 CO2 Monitor

This uniquely rugged and simple design by Envent Engineering utilizes dual-beam technology for accuracy and stability.

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Applications

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.

Features

  • 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.

Specifications

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

 

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