ACCURRA-S 4030 measures methane from 0 to 100 %, with a minimum range of 0 to 5 %, by NDIR and a sensor life above five years. It can share an enclosure with CO2 for biogas. Methane is flammable, so area and sample are reviewed.
Specifications
| Item | Specification | Notes |
|---|---|---|
| 4030 | 0 to 100 % (min 0 to 5 %) | NDIR, sensor life above 5 years |
| Resolution | 0.01 % | |
| Accuracy | 2 % of FS | Repeatability 2 % of reading; T90 below 45 s |
| Dual-gas | CO2 with CH4, percent | Independent outputs and Modbus ID |
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
- Calibration history and password protection
- Isolated 4-20 mA with dual range
- Modbus RTU for remote monitoring
How it works
Methane absorbs infrared strongly, which makes NDIR the reliable choice across a wide range with excellent long-term stability. The wide range matters because the same analyser can read a few percent of methane in a purge check or nearly 100 percent in upgraded biogas.
Typical uses are biogas and CBG plants, gas purity checks, process gas and furnace atmospheres that contain methane.
Requirements and limits
- Safe-area analyser; review flammable samples with us before ordering.
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 | Zero-grade CH₄, 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 4030 for methane in biogas, natural gas blending checks and carbon-bearing furnace atmospheres.
Methane is flammable, so sample handling and installation need an area review; the catalogue sample specification asks for non-flammable samples.
Applications
Application pages where this is part of the recommended solution:
- Biogas and compressed biogas (CBG)
- Heat-treatment furnace atmosphere
- Pyrolysis, gasification and syngas
- Gas purity certification and cylinder filling
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-SHeadline filters
Particulate, coalescing and PTFE membrane filters from Headline Filters, UK, for analyser protection.
View Headline filters
i-Cons
Smart Peltier sample conditioner with diagnostics, auto blowback and Modbus, in a compact 19 inch cabinet.
View i-ConsFrequently asked questions
What is the smallest range?
0 to 5 percent.
Can I measure methane and CO2 together?
Yes, in a dual-gas ACCURRA-S, 4030 plus 6030.
Is it suitable for biogas with H2S?
Hydrogen sulphide is outside the standard sample specification. Send the composition for review.
What sensor technology?
NDIR.
Related pages
- ACCURRA-S
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- ACCURRA-S carbon monoxide analysers
- ACCURRA-S carbon dioxide analysers
- ACCURRA-S M015 moisture analyser
- ACCURRA-Hz
- Hazardous-area oxygen analyser
- INFINITY-Tx
- Hazardous-area hydrogen analyser
- Hazardous-area moisture analyser
- ACCURRA-Zr
- ACCURRA model numbers
- Browse all gas analysers