. 2021 Jul 22;21(15):4983. doi: 10.3390/s21154983

Table 6.

The comparison of the constructed sensor matrix with commercially available devices.

Producer	Model	Technology	Range	Accuracy	Response Time	Reference
Gdańsk University of Technology	Sensor matrix prototype	MOS and EC gas sensors	$C O$ , $C O_{2}$ , $C H_{4}$ , $H_{2}$ : 0–100% (using dilution system)	5% Full Scale (FS)	<90 s to 90% step range (MOS)	-
Cubic Sensor and Instrument Co.	Portable Infrared Syngas Analyzer Gasboard-3100P	$C O$ , $C O_{2}$ , $C H_{4}$ (NDIR) $H_{2}$ (TCD)	$C O$ : 0–30% $C O_{2}$ : 0–25% $C H_{4}$ : 0–10% $H_{2}$ : 0–30%	2% Full Scale (FS)	<15 s to 90% step range (NDIR)	[31]
Cubic Sensor and Instrument Co.	Syngas Analysis System Gasboard-9021	$C O$ , $C O_{2}$ , $C H_{4}$ (NDIR) $H_{2}$ (TCD)	$C O$ : 0–30% $C O_{2}$ : 0–25% $C H_{4}$ : 0–10% $H_{2}$ : 0–30%	$C O$ , $C O_{2}$ , $C H_{4}$ < 1% FS $H_{2}$ <2% FS	<15 s to 90% step range (NDIR)	[32]
Hubei Cubic-Ruiyi Instrument CO.	Portable Natural Gas Analyzer Gasboard-3110P	$C O_{2}$ , $C H_{4}$ (NDIR)	$C O_{2}$ : 0–5% $C H_{4}$ : 0–100%	<2% FS	<15 s to 90% step range (NDIR)	[33]
Nova Analytical Systems (a Unit of Tenova Goodfellow Inc.)	970P Portable Multi-Gas Industrial Analyzers	$C O$ , $C O_{2}$ , $C H_{4}$ (NDIR) $H_{2}$ (TCD)	$C O$ : 0–2% or 0–50% $C O_{2}$ : 0–2% or 0–50% $C H_{4}$ : 0–2% or 0–50% $H_{2}$ : 0–2% or 0–50%	0.1% for all gases <1% FS in 8 h	20–30 s to 90% step range	[34]
VASTHI Instruments Pvt Ltd	Online Syngas Analyzer by Vasthi	$C O$ , $C O_{2}$ , $C H_{4}$ (NDIR) $H_{2}$ (TCD)	$C O$ : 0–100% $C O_{2}$ : 0–100% $C H_{4}$ : 0–50% $H_{2}$ : 0–50%	$C O$ , $C O_{2}$ , $C H_{4}$ : 0.5% from range or ± 3% $H_{2}$ : ±5 ppm or 5%	45 s to 90% step range	[35]
Wuhan Tianyu Intelligent Control Technology Co., Ltd. (TIANYU)	Syngas Analyzer Portable SYN-600	$C O$ , $C O_{2}$ , $C H_{4}$ (NDIR) $H_{2}$ (TCD-MEMS)	$C O$ : 0–100% $C O_{2}$ : 0–100% $C H_{4}$ : 0–100% $H_{2}$ : 0–100%	$C O$ , $C O_{2}$ , $C H_{4}$ : ±2% FS $H_{2}$ : ±3% FS	45 s to 90% step range	[36]
MRU GmbH	SWG 100 Syngas	$C O$ , $C O_{2}$ , $C H_{4}$ (NDIR) $H_{2}$ (TCD)	$C O$ : 0–10/100% $C O_{2}$ : 0–10/100% $C H_{4}$ : 0–10/100% $H_{2}$ : 0–10/100%	no data	no data	[37]
ETG Risorse e Technologia S.r.l.	MCA 100 SYN P – Portable Syngas Analyzer	$C O$ , $C O_{2}$ , $C H_{4}$ (NDIR) $H_{2}$ (TCD)	Modified according to the needs of customer	$C O$ , $C O_{2}$ , $C H_{4}$ , $H_{2}$ : ±2% FS	no data	[38]