ACCURRA-S measures CO2 by NDIR, from 0 to 5000 ppm (model 6015) and from 0 to 20 % or 0 to 100 % (model 6030), with a sensor life above five years. Dual-gas versions pair CO2 with oxygen, CO or methane.
Specifications
| Item | Specification | Notes |
|---|---|---|
| 6015 | 0 to 5000 ppm (min 0 to 100 ppm) | NDIR, sensor life above 5 years; accuracy 1 % of FS; T90 below 60 s |
| 6030 | 0 to 20 % or 0 to 100 % (min 0 to 5 %) | NDIR, sensor life above 5 years; accuracy +/- 1 % of FS; T90 below 60 s |
| Dual-gas pairings | CO2 with O2 (ppm or %), CO2 with CO (ppm or %), CO2 with CH4 (%) | Independent outputs |
From the current Sarvesh product datasheets and company profile. Specifications may change without notice as products improve. The final responsibility to check that a product meets the process and analyser requirement remains with the customer.
Key features
- NDIR is stable and needs infrequent calibration
- Calibration check and history; optional auto-calibration
- Output freeze during calibration
How it works
NDIR sensors measure how much infrared light a gas absorbs at a wavelength specific to it. Carbon dioxide absorbs strongly, so it is measured accurately and stably for years, with little drift compared with electrochemical cells.
CO2 is measured as an impurity in nitrogen and argon, as a product in fermentation and combustion, as a component of biogas and welding blends, and as the product in beverage and dry ice plants.
Requirements and limits
- Safe-area analyser; the sample should be dry and free from oil and condensate.
On site: utilities and calibration gases
What to have ready at your plant before installation and commissioning.
| Item | Requirement | Notes |
|---|---|---|
| Power at the analyser | 100 to 240 V AC, 50/60 Hz, 45 W | |
| Zero gas | Zero-grade nitrogen, 99.9999 % | 10 litre cylinder with regulator |
| Span gas, percent CO₂ | Zero-grade CO₂, 99.999 % | 10 litre cylinder with regulator |
| Sample at the analyser | 2 to 10 psig, about 1 LPM, 5 to 45 °C, dust below 3 micron | Pressure and flow regulated by the user |
| Mounting | 19 inch rack or panel, in a safe area |
Selection guidance
Choose 6015 for ppm-level CO2 impurity. Choose 6030 for percent CO2 in fermenter off-gas, welding blends, biogas and furnace atmospheres.
For CO2 and CH4 together see the dual-gas biogas analyser page.
Applications
Application pages where this is part of the recommended solution:
- Fermenter and bioreactor off-gas
- Biogas and compressed biogas (CBG)
- Welding and laser gas mixtures
- Gas purity certification and cylinder filling
- Optical fibre and cable manufacturing
Compatible products
ACCURRA-S
Online analyser for trace, percent and purity O2, CO, CO2, CH4 and dew point; can measure two gases from one sample.
View ACCURRA-S
SGI-300 / SGI-320
Peltier sample cooler with integrated pump, filter and condensate detector; SGI-320 for emission monitoring.
View SGI-300 / SGI-320Headline filters
Particulate, coalescing and PTFE membrane filters from Headline Filters, UK, for analyser protection.
View Headline filtersFrequently asked questions
What ranges are available?
0 to 5000 ppm on 6015, and 0 to 20 or 0 to 100 percent on 6030.
Is CO2 affected by moisture?
The sample should be dry and non-condensing; use a cooler and filter for wet samples.
Can I read CO2 with oxygen?
Yes, in a dual-gas ACCURRA-S.
How long does the sensor last?
The catalogue gives more than five years.